Transformer All Functions in Datastage

transcript

DateandtimefunctionsYoucanusethedateandtimefunctionstoperformvariousoperationsondatesandtimesintheTransformerstage.Functionsthatspecifydates,times,ortimestampsintheargumentsusestringswithspecificformats:

Foradate,theformatis%yyyy%mm%dd Foratime,theformatis%hh:%nn:%ss.Ifextendedtoincludemicroseconds,theformat

is%hh:%nn:%ss.xwherexgivesthenumberofdecimalplacessecondsisgivento. Foratimestamp,theformatis%yyyy%mm%dd%hh:%nn:%ss.Ifextendedtoinclude

microseconds,theformatis%yyyy%mm%dd%hh:%nn:%ss.x,wherexgivesthenumberofdecimalplacessecondsisgivento.Functionsthathavedaysofweekintheargumenttakeastringspecifyingthedayoftheweek.Thedayisspecifiedasathreeletterabbreviation,orthefullname.Forexample,thestrings"thu"and"thursday"arebothvalid.ThefollowingfunctionsareintheDate&Timecategoryoftheexpressioneditor.Squarebracketsindicateanargumentisoptional.TheexamplesshowthefunctionasitappearsinaDerivationfieldintheTransformerstage.CurrentDate

Returnsthedatethatthejobrunsindateformat. Input:

Output:date Examples.Usethisfunctiontoaddanewcolumncontainingthedateto

thedataoutputbytheTransformerstage: CurrentDate()

CurrentTimeReturnsthetimeatwhichthejobrunsintimeformat.

Input:

Output:time Examples.Usethisfunctiontoaddanewcolumncontainingthetimeto

thedataoutputbytheTransformerstage: CurrentTime()

CurrentTimeMSReturnsthetimeatwhichthejobrunsintimeformat,thetimeincludesmicroseconds.

Input:

Output:time Examples.Usethisfunctiontoaddanewcolumncontainingthetimeto

thedataoutputbytheTransformerstage.YoumustsettheExtendedfieldinthecolumnmetadatatoMicrosecondstocontainthefulltime:

CurrentTimeMS()CurrentTimestamp

Returnsatimestampgivingthedateandtimethatthejobrunsintimestampformat.

Input:

Output:timestamp Examples.Usethisfunctiontoaddanewcolumncontainingthe

timestamptothedataoutputbytheTransformerstage: CurrentTimestamp()

CurrentTimestampMSReturnsatimestampgivingthedateandtimethatthejobrunsintimestampformat,thetimepartincludesmicroseconds.

Input:

Output:timestamp Examples.Usethisfunctiontoaddanewcolumncontainingthe

timestamptothedataoutputbytheTransformerstage.YoumustsettheExtendedfieldinthecolumnmetadatatoMicrosecondstocontainthefulltimestamp.

CurrentTimestampMS()DateFromDaysSince

Returnsadatebyaddinganintegertoabaselinedate.Theintegercanbenegativetoreturnadatethatisearlierthanthebasedate.

Input:number(int32),[baseline_date(date)]

Output:date Examples.Ifmylink.myintcolcontainstheinteger18250,and

mylink.mydatecolcontainsthedate19580818,thenthethreefollowingfunctionsareequivalent,andreturnthedate20080805:

DateFromDaysSince(18250,"19580818") DateFromDaysSince(mylink.myintcol,"19580818")

DateFromDaysSince(mylink.myintcol,mylink.mydatecol)Ifmylink.mynegintcolcontainstheinteger1,andmylink.mydatecolcontainsthedate19580818,thenthefollowingthreefunctionsareequivalent,andreturnthedate19580817:DateFromDaysSince(1,"19580818")DateFromDaysSince(mylink.mynegintcol,"19580818")DateFromDaysSince(mylink.mynegintcol,mylink.mydatecol)

DateFromComponents

Returnsadatefromthegivenyears,months,anddayofmonthgivenasthreeseparatevalues.

Input:years(int32),months(int32),dayofmonth(int32)

Output:date Examples.Ifmylink.yearcolcontainsthevalue2010,mylink.monthcol

containsthevalue12,andmylink.dayofmonthcolcontainsthevalue2,thenthetwofollowingfunctionsareequivalent,andreturnthedate20101202.

DateFromComponents(2010,12,2)DateFromComponents(mylink.yearcol,mylink.monthcol,mylink.dayofmonthcol)

DateFromJulianDayReturnsadatefromthegivenjulianday.

Input:julianday(uint32)

Output:date Examples.Ifmylink.myjulcolcontainsthevalue2454614,thenthetwo

followingfunctionsareequivalent,andreturnthedate20080527. DateFromJulianDay(2454614)

DateFromJulianDay(mylink.myjulcol)DateOffsetByComponents

Returnsthegivendate,withoffsetsappliedfromthegivenyearoffset,monthoffset,anddayofmonthoffsetgivenasthreeseparatevalues.Theoffsetvaluescaneachbepositive,zero,ornegative.

Input:basedate(date),year_offset(int32),month_offset(int32),dayofmonth_offset(int32)

Output:date Examples.Ifmylink.basedatecontains20110818andmylink.yearos

containsthevalue2,mylink.monthoscontainsthevalue0,andmylink.dayofmonthosolcontainsthevalue0,thenthetwofollowingfunctionsareequivalent,andreturnthedate20130818.

DateOffsetByComponents("20110818",2011,8,18) DateOffsetByComponents(mylink.basedate,mylink.yearos,

mylink.monthos,mylink.dayofmonthos)

Ifmylink.basedatecontains20110818andmylink.yearoscontainsthevalue2,mylink.monthoscontainsthevalue0,andmylink.dayofmonthosolcontainsthevalue0,thenthetwofollowingfunctionsareequivalent,andreturnthedate20090818.

DateOffsetByComponents("20110818",2011,8,18) DateOffsetByComponents(mylink.basedate,mylink.yearos,

mylink.monthos,mylink.dayofmonthos)

DaysSinceFromDateReturnsthenumberofdaysfromsourcedatetothegivendate.

Input:source_date,given_date

Output:days_since(int32) Examples.Ifmylink.mysourcedatecontainsthedate19580818and

mylink.mygivendatecontainsthedate20080818,thenthetwofollowingfunctionsareequivalent,andreturntheintegervalue18263.

DaysSinceFromDate(mylink.mysourcedate,mylink.mygivendate)DaysSinceFromDate("19580818","20080818")

DaysInMonthReturnsthenumberofdaysinthemonthinthegivenbasedate.

Input:basedate(date)

Output:daysinmonth(int32) Examples.Ifmylink.mysourcedatecontainsthedate19580818,then

thetwofollowingfunctionsareequivalent,andreturntheintegervalue31. DaysInMonth(mylink.mysourcedate)

DaysInMonth("19580818")DaysInYear

Returnsthenumberofdaysintheyearinthegivenbasedate. Input:basedate(date)

Output:daysinyearh(int32) Examples.Ifmylink.mysourcedatecontainsthedate20120818,then

thetwofollowingfunctionsareequivalent,andreturntheintegervalue366.

DaysInYear(mylink.mysourcedate)DaysInYear("20120818")Ifmylink.mysourcedatecontainsthedate20110818,thenthetwofollowingfunctionsareequivalent,andreturntheintegervalue365.DaysInYear(mylink.mysourcedate)DaysInYear("20110818")

DateOffsetByDaysReturnsthegivendate,offsetbythegivennumberofdays.Theoffsetvaluecanbepositive,zero,ornegative.

Input:basedate(date),dayoffset(int32)

Output:date Examples.Ifmylink.basedatecontains20110818andmylink.dayoffset

containsthevalue2,thenthetwofollowingfunctionsareequivalent,andreturnthedate20110820.

DateOffsetByDays("20110818",2)DateOffsetByDays(mylink.basedate,mylink.dayoffset)

Ifmylink.basedatecontains20110818andmylink.dayoffsetcontainsthevalue31,thenthetwofollowingfunctionsareequivalent,andreturnthedate20110718.

DateOffsetByDays("20110818",31)DateOffsetByDays(mylink.basedate,mylink.dayoffset)

HoursFromTimeReturnsthehourportionofatime.

Input:time

Output:hours(int8) Examples.Ifmylink.mytimecontainsthetime22:30:00,thenthe

followingtwofunctionsareequivalent,andreturntheintegervalue22. HoursFromTime(mylink.mytime)

HoursFromTime("22:30:00")JulianDayFromDate

Returnsajuliandayfromthegivendate. Input:date

Output:julianday(int32) Examples.Ifmylink.mydatecontainsthedate20080527,thenthetwo

followingfunctionsareequivalent,andreturnthevalue2454614. JulianDayFromDate("20080527")

JulianDayFromDate(mylink.mydate)MicroSecondsFromTime

Returnsthemicrosecondportionofatime. Input:time

Output:microseconds(int32) Examples.Ifmylink.mytimecontainsthetime22:30:00.32,thenthe

followingfunctionreturnsthevalue320000:MicroSecondsFromTime(mylink.mytime)

MidnightSecondsFromTimeReturnsthenumberofsecondsfrommidnighttothegiventime.

Input:time

Output:seconds(int8) Examples.Ifmylink.mytimecontainsthetime00:30:52,thenthetwo

followingfunctionsareequivalent,andreturnthevalue1852: MidnightSecondsFromTime("00:30:52")

MidnightSecondsFromTime(mylink.mytime)MinutesFromTime

Returnstheminuteportionofatime. Input:time

Output:minutes(int8) Examples.Ifmylink.mytimecontainsthetime22:30:52,thenthetwo

followingfunctionsareequivalent,andreturnthevalue30: MinutesFromTime("22:30:52")

MinutesFromTime(mylink.mytime)MonthDayFromDate

Returnsthedayofthemonthfromthegivendate. Input:date

Output:day(int8) Examples.Ifmylink.mydatecontainsthedate20080818,thenthetwo

followingfunctionsareequivalent,andreturnthevalue18: MonthDayFromDate("20080818")

MonthDayFromDate(mylink.mydate)MonthFromDate

Returnsthemonthnumberfromthegivendate. Input:date

Output:month_number(int8) Examples.Ifmylink.mydatecontainsthedate20080818,thenthetwo

followingfunctionsareequivalent,andreturnthevalue8: MonthFromDate("20080818")

MonthDayDate(mylink.mydate)NextWeekdayFromDate

Returnsthedateofthespecifieddayoftheweeksoonestafterthesourcedate.Thedayoftheweekisspecifiedasthefullname,forexample,thursday,orathreeletterabbreviation,forexample,thu.

Input:sourcedate(date),day_of_week(string)

Output:date Examples.Ifmylink.mysourcedatecontainsthedate20080818,thenthe

twofollowingfunctionsareequivalent,andreturnthevalue20080821: NextWeekdayFromDate("20080818","thursday")

NextWeekdayFromDate(mylink.mysourcedate,"thu")NthWeekdayFromDate

Returnsthedateofthespecifieddayoftheweekoffsetbythespecifiednumberofweeksfromthesourcedate.Thedayoftheweekisspecifiedasthefullname,forexample,thursday,orathreeletterabbreviation,forexample,thu.Theoffsetcanbepositive,negative,orzero.

Input:basedate(date),day_of_week(string),week_offset(int32)

Output:date Examples.Ifmylink.mydatecontainsthedate20090818,thenthetwo

followingfunctionsareequivalent,andreturnthevalue20090827:

NthWeekdayFromDate("20090818","thursday",1)NthWeekdayFromDate(mylink.mydate,"thu",1)Ifmylink.mydatecontainsthedate20090818,thenthetwofollowingfunctionsareequivalent,andreturnthevalue20090806:NthWeekdayFromDate("20090818","thursday",2)NthWeekdayFromDate(mylink.mydate,"thu",2)

PreviousWeekdayFromDateReturnsthedateofthespecifieddayoftheweekmostrecentbeforethesourcedate.Thedayoftheweekisspecifiedasthefullname,forexample,thursday,orathreeletterabbreviation,forexample,thu.

Input:sourcedate,day_of_week(string)

Output:date Examples.Ifmylink.mysourcedatecontainsthedate20080818,thenthe

twofollowingfunctionsareequivalent,andreturnthevalue20080814: PreviousWeekdayFromDate("20080818","thursday")

PreviousWeekdayFromDate(mylink.mysourcedate,"thu")SecondsFromTime

Returnsthesecondsportionofatime. Input:time

Output:seconds(dfloat) Examples.Ifmylink.mytimecontainsthetime22:30:52,thenthetwo

followingfunctionsareequivalent,andreturnthevalue52: SecondsFromTime("22:30:52")

SecondsFromTime(mylink.mytime)SecondsSinceFromTimestamp

Returnsthenumberofsecondsbetweentwotimestamps. Input:timestamp,timestamp_base

Output:seconds(dfloat) Examples.Ifmylink.mytimestampcontainsthetimestamp20080818

22:30:52,andmylink.mytimestamp_basecontainsthetimestamp2008081922:30:52,thenthetwofollowingfunctionsareequivalent,andreturnthevalue86400:

SecondsSinceFromTimestamp("2008081822:30:52","2008081922:30:52")SecondsSinceFromTimestamp(mylink.mytimestamp,mylink.mytimestamp_base)

TimeDateReturnsthesystemtimeanddateasaformattedstring.

Input:

Output:systemtimeanddate(string) Examples.Ifthejobwasrunat4.21pmonJune20th2008,thenthe

followingfunctionreturnsthestring"16:21:4820Jun2008".TimeDate()

TimeFromComponentsReturnsatimefromthegivenhours,minutes,secondsandmicrosecondsgivenasfourseparatevalues.

Input:hours(int32),minutes(int32),seconds(int32),microseconds(int32)

Output:time Examples.Ifmylink.hourcolcontainsthevalue10,mylink.mincol

containsthevalue12,mylink.seccolcontainsthevalue2,andmylink.mseccolcontains0,thenthetwofollowingfunctionsareequivalent,andreturnthetime10:12:02.0:

TimeFromComponents(10,12,2,0)TimeFromComponents(mylink.hourcol,mylink.mincol,mylink.seccol,mylink.mseccol)

TimeFromMidnightSecondsReturnsthetimegiventhenumberofsecondssincemidnight.

Input:seconds(dfloat)

Output:time Examples.Ifmylink.mymidnightsecondscontainsthevalue240,thenthe

twofollowingfunctionsareequivalent,andreturnthevalue00:04:00: TimeFromMidnightSeconds("240")

TimeFromMidnightSeconds(mylink.mymidnightseconds)TimeOffsetByComponents

Returnsthegiventime,withoffsetsappliedfromthegivenhouroffset,minuteoffset,andsecondoffset,eachgivenasseparatevalues.Thesecondsoffsetcanincludepartialseconds.

Input:basetime(time),hour_offset(int32),minute_offset(int32),second_offset(dfloat)

Output:time Examples.Ifmylink.basetimecontains14:05:29andmylink.houros

containsthevalue2,mylink.minoscontainsthevalue0,mylink.secoscontainsthevalue20,thenthetwofollowingfunctionsareequivalent,andreturnthetime16:05:49.

TimeOffsetByComponents("14:05:29",2,0,20)TimeOffsetByComponents(mylink.basetime,mylink.houros,mylink.minos,mylink.secos)

TimeOffsetBySecondsReturnsthegiventime,withoffsetsappliedfromthegivensecondsoffset.Thesecondsoffsetcanincludepartialseconds.

Input:basetime(time),second_offset(dfloat)

Output:time Examples.Ifmylink.basetimecontains14:05:29.30andmylink.secos

containsthevalue2.5,thenthetwofollowingfunctionsareequivalent,andreturnthetime14:05:31.80:

TimeOffsetByComponents("14:05:29.30",2.5)TimeOffsetByComponents(mylink.basetime,mylink.secos)

TimestampFromDateTimeReturnsatimestampformthegivendateandtime.

Input:datetime

Output:timestamp Examples.Ifmylink.mydatecontainsthedate20080818and

mylink.mytimecontainsthetime22:30:52,thenthetwofollowingfunctionsareequivalent,andreturnthetimestamp2008081822:30:52:

TimestampFromDateTime("20080818","22:30:52")TimestampFromDateTime(mylink.mydate,mylink.mytime)

TimestampFromSecondsSinceReturnsatimestampderivedfromthenumberofsecondsfromthebasetimestamp.

Input:seconds(dfloat),[base_timestamp]

Output:timestamp Examples.Ifmylink.mysecondscontainsthevalue2563and

mylink.timestamp_basecontainsthetimestamp2008081822:30:52,thenthetwofollowingfunctionsareequivalent,andreturnthetimestamp2008081823:13:35:

TimestampFromSecondsSince("2563","2008081822:30:52")TimestampFromSecondsSince(mylink.myseconds,mylink.timestamp_base)

TimestampFromTimetReturnsatimestampfromthegivenUNIXtime_tvalue.

Input:timet(int32)

Output:timestamp Examples.Ifmylink.mytimetcontainsthevalue1234567890,thenthe

twofollowingfunctionsareequivalent,andreturnthetimestamp2009021323:31:30:

TimestampFromTimet("1234567890")TimestampFromTimet(mylink.mytimet)

TimestampOffsetByComponentsReturnsthegiventimestamp,withoffsetsappliedfromthegivenyearoffset,monthoffset,dayoffset,houroffset,minuteoffset,andsecondoffset,eachgivenasseparatevalues.Thesecondsoffsetcanincludepartialseconds.

Input:basetimestamp(timestamp),year_offset(int32),month_offset

(int32),dayofmonth_offset(int32),hour_offset(int32),minute_offset(int32),second_offset(dfloat)

Output:timestamp Examples.Ifmylink.basetimestampcontains2009081814:05:29and

mylink.yearoscontains0,mylink.monthoscontainsthevalue2,mylink.dayoscontainsthevalue4,mylink.houroscontainsthevalue2,mylink.minoscontainsthevalue0,mylink.secoscontainsthevalue20,thenthetwofollowingfunctionsareequivalent,andreturnthetimestamp2009101416:05:49.

TimestampOffsetByComponents("2009081814:05:29",0,2,4,2,0,20)

TimestampOffsetByComponents(mylink.basetimestamp,mylink.houros,mylink.minos,mylink.secos)

TimestampOffsetBySecondsReturnsthegiventimestamp,withoffsetsappliedfromthegivensecondsoffset.Thesecondsoffsetcanincludepartialseconds.

Input:basetimestamp(timestamp),second_offset(dfloat)

Output:timestamp Examples.Ifmylink.basetimestampcontains2009081814:05:29and

mylink.secoscontainsthevalue32760,thenthetwofollowingfunctionsareequivalent,andreturnthetimestamp2009081823:11:29:

TimeOffsetBySeconds("2009081814:05:29",32760) TimeOffsetBySeconds

(mylink.basetimestamp,mylink.secos)TimetFromTimestamp

ReturnsaUNIXtime_tvaluefromthegiventimestamp. Input:timestamp

Output:timet(int32) Examples.Ifmylink.mytimestampcontainsthevalue20090213

23:31:30,thenthetwofollowingfunctionsareequivalent,andreturnthevalue1234567890:

TimestampFromTimet("2009021323:31:30")TimestampFromTimet(mylink.mytimestamp)

WeekdayFromDateReturnsthedaynumberoftheweekfromthegivendate.Origin_dayoptionallyspecifiesthedayregardedasthefirstintheweekandisSundaybydefault.

Input:date,[origin_day]


followingfunctionsareequivalent,andreturnthevalue1:

WeekdayFromDate("20080818")WeekdayFromDate(mylink.mydate)Ifmylink.mydatecontainsthedate20080818,andmylink.origin_daycontainssaturday,thenthetwofollowingfunctionsareequivalent,andreturnthevalue2:WeekdayFromDate("20080818","saturday")WeekdayFromDate(mylink.mydate,mylink.origin_day)

YeardayFromDateReturnsthedaynumberintheyearfromthegivendate.

Input:date


followingfunctionsareequivalent,andreturnthevalue231: YeardayFromDate("20080818")

YeardayFromDate(mylink.mydate)YearFromDate

Returnstheyearfromthegivendate. Input:date

Output:year(int16) Examples.Ifmylink.mydatecontainsthedate20080818,thenthetwo

followingfunctionsareequivalent,andreturnthevalue2008: YearFromDate("20080818")

YearFromDate(mylink.mydate)YearweekFromDate

Returnstheweeknumberintheyearfromthegivendate Input:date

Output:week(int16) Examples.Ifmylink.mydatecontainsthedate20080818,thenthetwo

followingfunctionsareequivalent,andreturnthevalue33: YearweekFromDate("20080818")

YearweekFromDate(mylink.mydate)

LogicalfunctionsThelogicalfunctionsperformbitoperations.ThelogicalfunctionsareintheLogicalcategoryoftheexpressioneditor.Squarebracketsindicateanargumentisoptional.TheexamplesshowthefunctionasitappearsinaDerivationfieldintheTransformerstage.BitAnd

ReturnsthebitwiseANDofthetwointegerarguments. Input:number1(uint64),number2(uint64)

Output:number(uint64) Examples.Ifmylink.mynumber1containsthenumber352and

mylink.mynumber2containsthenumber400,thenthefollowingtwofunctionsareequivalent,andreturnthevalue256:

BitAnd(352,400)BitAnd(mylink.mynumber1,mylink.mynumber2)

BitCompressReturnstheintegermadefromthestringargument,whichcontainsabinaryrepresentationof"1"sand"0"s.

Input:string

Output:number(uint64) Examples.Ifmylink.mynumber1containsthestring"0101100000",then

thefollowingtwofunctionsareequivalent,andreturnthenumber352. BitExpand("0101100000")

BitExpand(mylink.mynumber)BitExpand

Returnsastringcontainingthebinaryrepresentationin"1"sand"0"softhegiveninteger.

Input:number(uint64)

Output:string Examples.Ifmylink.mynumber1containsthenumber352,thenthe

followingtwofunctionsareequivalent,andreturnthestring"0101100000".

BitExpand(352)BitExpand(mylink.mynumber)

BitOrReturnsthebitwiseORofthetwointegerarguments.

Input:number1(uint64),number2(uint64)


mylink.mynumber2containsthenumber400,thenthefollowingtwofunctionsareequivalent,andreturnthevalue496:

BitOr(352,400)BitOr(mylink.mynumber1,mylink.mynumber2)

BitXOrReturnsthebitwiseExclusiveORofthetwointegerarguments.

Input:number1(uint64),number2(uint64)


mylink.mynumber2containsthenumber400,thenthefollowingtwo

functionsareequivalent,andreturnthevalue240: BitXOr(352,400)

BitXOr(mylink.mynumber1,mylink.mynumber2)Not

Returnsthecomplementofthelogicalvalueofanexpression.Ifthevalueofexpressionistrue,theNotfunctionreturnsavalueoffalse(0).Ifthevalueofexpressionisfalse,theNOTfunctionreturnsavalueoftrue(1).Anumericexpressionthatevaluatesto0isalogicalvalueoffalse.Anumericexpressionthatevaluatestoanythingelse,otherthanthenullvalue,isalogicaltrue.Anemptystringislogicallyfalse.Allotherstringexpressions,includingstringsthatincludeanemptystring,spaces,orthenumber0andspaces,arelogicallytrue.

Input:expression

Output:complement(int8) Examples.Ifmylink.myexpressioncontainstheexpression55,thenthe

followingtwofunctionsareequivalent,andreturnthevalue1: Not(55) Not(mylink.myexpression)

Ifmylink.myexpressioncontainstheexpression5+5,thenthefollowingtwofunctionsareequivalent,andreturnthevalue0:

Not(5+5) Not(mylink.myexpression)

SetBitReturnsanintegerwithspecificbitssettoaspecificstate,whereorigfieldistheinputvaluetoperformtheactionon,bitlistisastringcontainingalistofcommaseparatedbitnumberstosetthestateof,andbitstateiseither1or0,indicatingwhichstatetosetthosebits.

Input:origfield(uint64),bitlist(string),bitstate(uint8)

Output:number(uint64) Examples.Ifmylink.origfieldcontainsthenumber352,mylink.bitlist

containsthelist"2,4,8",andmylink.bitstatecontainsthevalue1,thenthefollowingtwofunctionsareequivalent,andreturnthevalue494:

SetBit(356,"2,4,8",1)SetBit(mylink.origfield,mylink.bitlist,mylink.bitstate)

MathematicalfunctionsThemathematicalfunctionsperformmathematicaloperations.ThemathematicalfunctionsareintheMathematicalcategoryoftheexpressioneditor.Squarebracketsindicateanargumentisoptional.TheexamplesshowthefunctionasitappearsinaDerivationfieldintheTransformerstage.Abs

Returnstheabsolutevalueofanynumericexpression.Theabsolutevalueofan

expressionisitsunsignedmagnitude. Input:numeric_expression(int32)

Output:result(dfloat) Examples.Ifmylink.number1containsthenumber12and

mylink.number2containsthenumber34,thenthefollowingtwofunctionsareequivalent,andreturnthenumber22:

Abs(1234)Abs(mylink.mynumber1mylink.mynumber2)Ifmylink.number1containsthenumber34andmylink.number2containsthenumber12,thenthefollowingtwofunctionsareequivalent,andreturnthenumber22:Abs(3412)Abs(mylink.mynumber1mylink.mynumber2)

AcosCalculatesthetrigonometricarccosineofanexpression.Theexpressionmustbeanumericvalue.Theresultisexpressedinradians.

Input:numeric_expression(dfloat)

Output:result(dfloat) Examples.Ifmylink.numbercontainsthenumber0.707106781,thenthe

followingtwofunctionsareequivalent,andreturnthevalue0.785398: Acos(0.707106781)

Acos(mylink.mynumber)Asin

Calculatesthetrigonometricarcsineofanexpression.Theexpressionmustbeanumericvalue.Theresultisexpressedinradians.



followingtwofunctionsareequivalent,andreturnthevalue0.785398: Asin(0.707106781)

Asin(mylink.mynumber)Atan

Calculatesthetrigonometricarctangentofanexpression.Theexpressionmustbeanumericvalue.Theresultisexpressedinradians.


Output:result(dfloat) Examples.Ifmylink.numbercontainsthenumber135,thenthefollowing

twofunctionsareequivalent,andreturnthevalue1.56339,whichistheanglethathasanarctangentof135:

Atan(135)

Atan(mylink.mynumber)Ceil

Calculatesthesmallestintegervaluegreaterthanorequaltothegivendecimalvalue.

Input:number(dfloat)

Output:result(int32) Examples.Ifmylink.numbercontainsthenumber2355.66,thenthe

followingtwofunctionsareequivalent,andreturnthevalue2356: Ceil(2355.66)

Ceil(mylink.mynumber)Cos

Calculatesthetrigonometriccosineofanexpression.Theexpressionmustbeanumericvalue.Theexpressionmustproduceanumericvaluewhichistheangleinradians.

Input:radians(dfloat)


followingtwofunctionsareequivalent,andreturnthevalue0.7071: Cos(0.785398)

Cos(mylink.mynumber)Cosh

Calculatesthehyperboliccosineofanexpression.Theexpressionmustbeanumericvalue.



twofunctionsareequivalent,andreturnthevalue3.7622: Cosh(2)

Cosh(mylink.mynumber)Div

Outputsthewholepartoftherealdivisionoftworealnumbers(dividend,divisor).

Input:dividend(dfloat),divisor(dfloat)

Output:result(dfloat) Examples.Ifmylink.dividendcontainsthenumber100,and

mylink.divisorcontainsthenumber25,thenthefollowingtwofunctionsareequivalent,andreturnthevalue4:

Div(100,25)Div(mylink.dividend,mylink.divisor)

ExpCalculatestheresultofbase'e'raisedtothepowerdesignatedbythevalueofthe

expression.Thevalueof'e'isapproximately2.71828.Theexpressionmustevaluatetoanumericvalue.



twofunctionsareequivalent,andreturnthevalue54.5982: Exp(51)

Exp(mylink.number1)Fabs

Calculatestheabsolutevalueofthegivenfloatvalue. Input:number(dfloat)


followingtwofunctionsareequivalent,andreturnthevalue26.53: Fabs(26.53)

Fabs(mylink.number)Floor

Calculatesthelargestintegervaluelessthanorequaltothegivendecimalvalue. Input:number(dfloat)

Output:result(int32) Examples.Ifmylink.numbercontainsthenumber203.25,thenthe

followingtwofunctionsareequivalent,andreturnthevalue203: Floor(203.25)

Floor(mylink.number)Ldexp

Returnsadfloatvaluefrommultiplyingthemantissaby2raisedtothepoweroftheexponent.

Input:mantissa(dfloat),exponent(int32)

Output:result(dfloat) Examples.Ifmylink.mantissacontainsthenumber2,and

mylink.exponentcontainsthenumber3,thenthefollowingtwofunctionsareequivalent,andreturnthevalue16:

Floor(2,3)Floor(mylink.mantissa,mylink.exponent)

LlabsCalculatestheabsolutevalueofthegivenintegervalue.

Input:number(integer)

Output:result(unsignedinteger) Examples.Ifmylink.numbercontainsthenumber26,thenthefollowing

twofunctionsareequivalent,andreturnthevalue26: Llabs(26)

Llabs(mylink.number)Ln

Calculatesthenaturallogarithmofanexpressioninbase'e'.Thevalueof'e'isapproximately2.71828.Theexpressionmustevaluatetoanumericvaluegreaterthan0.



twofunctionsareequivalent,andreturnthevalue1.79176: Ln(6)

Ln(mylink.number)Log10

Returnsthelogtothebase10ofthegivenvalue Input:number(dfloat)


twofunctionsareequivalent,andreturnthevalue0.778151: Log10(6)

Log10(mylink.number)Max

Returnsthegreaterofthetwoargumentvalues. Input:number1(int32),number2(int32)

Output:result(int32) Examples.Ifmylink.number1containsthenumber6,and

mylink.number1containsthenumber101,thenthefollowingtwofunctionsareequivalent,andreturnthevalue101:

Max(6,101)Max(mylink.number1,mylink.number2)

MinReturnsthelowerofthetwoargumentvalues.

Input:number1(int32),number2(int32)

Output:result(int32) Examples.Ifmylink.number1containsthenumber6,and

mylink.number1containsthenumber101,thenthefollowingtwofunctionsareequivalent,andreturnthevalue6:

Min(6,101)Min(mylink.number1,mylink.number2)

Mod

Calculatesthemodulo(theremainder)oftwoexpressions(dividend,divisor). Input:dividend(int32),divisor(int32)

Output:result(int32) Examples.Ifmylink.dividendcontainsthenumber115,and

mylink.divisorcontainsthenumber25,thenthefollowingtwofunctionsareequivalent,andreturnthevalue15:

Mod(115,25)Mod(mylink.dividend,mylink.divisor)

NegNegatesanumber.



twofunctionsareequivalent,andreturnthevalue123: Neg(123)

Neg(mylink.number)Pwr

Calculatesthevalueofanexpressionwhenraisedtoaspecifiedpower(expression,power).

Input:expression(dfloat),power(dfloat)

Output:result(dfloat) Examples.Ifmylink.expressioncontainsthenumber2,andmylink.power

containsthenumber3,thenthefollowingtwofunctionsareequivalent,andreturnthevalue8:

Pwr(2,3)Pwr(mylink.expression,mylink.power)

RandReturnapsuedorandomintegerbetween0and2321

Input:

Output:result(uint32) Examples.Usethisfunctiontoaddacolumntoyouroutputcontaininga

randomnumber:Rand()

RandomReturnsarandomnumberbetween0and2321

Input:

Output:result(uint32) Examples.Usethisfunctiontoaddacolumntoyouroutputcontaininga

randomnumber:

Random()Sin

Calculatesthetrigonometricsineofanexpression.Theexpressionmustbeanumericvalue.Theexpressionmustproduceanumericvaluewhichistheangleinradians.



followingtwofunctionsareequivalent,andreturnthevalue0.7071: Sin(0.785398)

Sin(mylink.mynumber)Sinh

Calculatesthehyperbolicsineofanexpression.Theexpressionmustbeanumericvalue.


Output:result(dfloat) Examples:Ifmylink.numbercontainsthenumber2,thenthefollowing

twofunctionsareequivalent,andreturnthevalue3.62686: Sinh(2)

Sinh(mylink.mynumber)Sqrt

Calculatesthesquarerootofanumber. Input:number(dfloat)


twofunctionsareequivalent,andreturnthevalue21.2132: Sqrt(450)

Sqrt(mylink.mynumber)Tan

Calculatesthetrigonometrictangentofanexpression.Theexpressionmustproduceanumericvaluewhichistheangleinradians.



followingtwofunctionsareequivalent,andreturnthevalue0.7071: Tan(0.7853981)

Tan(mylink.mynumber)Tanh

Calculatesthehyperbolictangentofanexpression.Theexpressionmustbeanumericvalue.



twofunctionsareequivalent,andreturnthevalue0.964028: Tanh(2)

Tanh(mylink.mynumber)

NullhandlingfunctionsYoucanusethenullhandlingfunctionsintheTransformerstagetohandlenullsinderivations.Ifyouuseinputcolumnsinanoutputcolumnexpression,anullvalueinanyinputcolumncausesanulltobewrittentotheoutputcolumn.Youcan,however,usethenullhandlingfunctionstohandlenullsexplicitly.ThefollowingfunctionsareavailableintheNullHandlingcategory.Squarebracketsindicateanargumentisoptional.TheexamplesshowthefunctionasitappearsinaDerivationfieldintheTransformerstage.IsNotNull

Returnstruewhenanexpressiondoesnotevaluatetothenullvalue. Input:any

Output:true/false(int8) Examples.IftheDerivationfieldforanoutputcolumncontainedthe

followingcode,thentheTransformerstagechecksiftheinputcolumnnamedmylink.mycolumncontainsanullvalue.Iftheinputcolumndoesnotcontainanull,theoutputcolumncontainsthevalueoftheinputcolumn.Iftheinputcolumndoescontainanull,thentheoutputcolumncontainsthestringNULL.IfIsNotNull(mylink.mycolumn)Thenmylink.mycolumnElse"NULL"

IsNullReturnstruewhenanexpressionevaluatestothenullvalue.

Input:any

Output:true/false(int8) Examples.IftheDerivationfieldforanoutputcolumncontainedthe

followingcode,thentheTransformerstagechecksiftheinputcolumnnamedmylink.mycolumncontainsanullvalue.Iftheinputcolumncontainsanull,theoutputcolumncontainsthestringNULL.Iftheinputcolumndoesnotcontainanull,thentheoutputcolumncontainsthevalueoftheinputcolumn.IfIsNull(mylink.mycolumn)Then"NULL"Elsemylink.mycolumn

NullToEmpty

Returnsanemptystringiftheinputcolumnisnull,otherwisereturnstheinputcolumnvalue.

Input:inputcolumn

Output:inputcolumnvalueoremptystring Examples.IftheDerivationfieldforanoutputcolumncontainedthe

followingcode,thentheTransformerstagechecksiftheinputcolumnnamedmylink.mycolumncontainsanullvalue.Iftheinputcolumncontainsanull,theoutputcolumncontainsanemptystring.Iftheinputcolumndoescontainanull,thentheoutputcolumncontainsthevaluefromtheinputcolumn.NullToEmpty(mylink.mycolumn)

NullToZeroReturnszeroiftheinputcolumnisnull,otherwisereturnstheinputcolumnvalue.

Input:inputcolumn

Output:inputcolumnvalueorzero Examples.IftheDerivationfieldforanoutputcolumncontainedthe

followingcode,thentheTransformerstagechecksiftheinputcolumnnamedmylink.mycolumncontainsanullvalue.Iftheinputcolumncontainsanull,theoutputcolumncontainszero.Iftheinputcolumndoescontainanull,thentheoutputcolumncontainsthevaluefromtheinputcolumn.NullToZeroy(mylink.mycolumn)

NullToValueReturnsthespecifiedvalueiftheinputcolumnisnull,otherwisereturnstheinputcolumnvalue.

Input:inputcolumn,value

Output:inputcolumnvalueorvalue Examples.IftheDerivationfieldforanoutputcolumncontainedthe

followingcode,thentheTransformerstagechecksiftheinputcolumnnamedmylink.mycolumncontainsanullvalue.Iftheinputcolumncontainsanull,theoutputcolumncontains42.Iftheinputcolumndoescontainanull,thentheoutputcolumncontainsthevaluefromtheinputcolumn.NullToValue(mylink.mycolumn,42)

SetNullAssignsanullvaluetothetargetcolumn.

Input:

Output: Examples.IftheDerivationfieldforanoutputcolumncontainedthe

followingcode,thentheTransformerstagesetstheoutputcolumntonull:

setnull()

NumberfunctionsUsethenumberfunctionstoextractthemantissafromadecimalorfloatingpointnumber.TheNumbercategoryintheexpressioneditoralsocontainsthetypecastingfunctions,whichyoucanusetocastnumbersasdouble,float,orintegerdatatypes.Squarebracketsindicateanargumentisoptional.TheexamplesshowthefunctionasitappearsinaDerivationfieldintheTransformerstage.Thetypecastingfunctionshelpyouwhenyouperformmathematicalcalculationsusingnumericfields.Forexample,ifyouhaveacalculationusinganoutputcolumnoftypefloatderivedfromaninputcolumnoftypeintegerinaParallelTransformerstagetheresultisderivedasanintegerregardlessofitsfloattype.Ifyouwantanonintegralresultforacalculationusingintegraloperands,youcanusethetypecastingfunctionstocasttheintegeroperandsintononintegraloperands.AsDouble

Treatthegivennumberasadouble. Input:number

Output:number(double) Examples.Inthefollowingexpression,theinputcolumnmynumber

containsaninteger,butthefunctionoutputsadouble.Ifmylink.mynumbercontainsthevalue56,thenthefollowingtwofunctionsareequivalent,andreturnthevalue1.29629629629629619E+01:

AsDouble(56/4.32)AsDouble(mylink.mynumber/4.32)

AsFloatTreatthegivennumberasafloat.

Input:number

Output:number(float) Examples.Inthefollowingexpression,theinputcolumnmynumber

containsaninteger,butthefunctionoutputsafloat.Ifmylink.mynumbercontainsthevalue56,thenthefollowingtwofunctionsareequivalent,andreturnthevalue1.29629629629629619E+01:

AsFloat(56/4.32)AsFloat(mylink.mynumber/4.32)

AsIntegerTreatthegivennumberasaninteger.

Input:number

Output:number(integer) Examples.Inthefollowingexpression,theinputcolumnmynumber

containsadouble,butthefunctionisoutputaninteger.If

mylink.mynumbercontainsthevalue56,thenthefollowingtwofunctionsareequivalent,andreturnthevalue12:

AsInteger(56/4.32)AsInteger(mylink.mynumber/4.32)

MantissaFromDecimalReturnsthemantissafromthegivendecimal.

Input:number(decimal)


followingtwofunctionsareequivalent,andreturnthevalue7675: MantissaFromDecimal(243.7675)

MantissaFromDecimal(mylink.mynumber)MantissaFromDFloat

Returnsthemantissafromthegivendfloat. Input:number(dfloat)

Output:result(dfloat) Examples.Ifmylink.numbercontainsthenumber

1.234412000000000010E+4,thenthefollowingfunctionreturnsthevalue1:MantissaFromDFloat(mylink.mynumber)

RawfunctionsUsetheRawfunctiontoobtainthelengthofthedatainacolumncontainingrawdata.ThefunctionisintheRawcategory.TheexamplesshowthefunctionasitappearsinaDerivationfieldintheTransformerstage.RawLength

Returnsthelengthofarawstring. Input:inputstring(raw)

Output:result(int32) Examples.Ifmylink.rawdatacontainstherawdatafromabitmap,then

thefollowingfunctionreturnsthesizeofthebitmapinbytes:RawLength(mylink.rawdata)

StringfunctionsUsethestringfunctionstomanipulatestrings.ThefollowingfunctionsareintheStringcategoryoftheexpressioneditor.Squarebracketsindicateanargumentisoptional.TheexamplesshowthefunctionasitappearsinaDerivationfieldintheTransformerstage.

AlNumCheckswhetherthegivenstringcontainsonlyalphanumericcharacters.

Input:string(string)

Output:true/false(int8) Examples.Ifmylink.mystring1containsthestring"OED_75_9*E",then

thefollowingfunctionwouldreturnthevalue1(false).AlNum(mylink.mystring1)Ifmylink.mystring2containsthestring"12redroses",thenthefollowingfunctionwouldreturnthevalue1(true).AlNum(mylink.mystring2)

AlphaCheckswhetherthegivenstringcontainsonlyalphabeticcharacters.


Output:true/false(int8) Examples.Ifmylink.mystring1containsthestring"12redroses",thenthe

followingfunctionwouldreturnthevalue1(false).Alpha(mylink.mystring1)Ifmylink.mystring2containsthestring"twelveredroses",thenthefollowingfunctionwouldreturnthevalue1(true).Alpha(mylink.mystring2)

CompactWhiteSpaceReturnthestringafterreducingallconsecutivewhitespacetoasinglespace.


Output:result(string) Examples.Ifmylink.mystringcontainsthestring"toomanyspaces",

thenthefollowingfunctionreturnsthestring"toomanyspaces":CompactWhiteSpace(mylink.mystring)

CompareComparestwostringsforsorting.Thecomparisoncanbeleftjustified(thedefault)orrightjustified.Arightjustifiedcomparisoncomparesnumericsubstringswithinthespecifiedstringsasnumbers.Thenumericstringsmustoccuratthesamecharacterpositionineachstring.Forexample,arightjustifiedcomparisonofthestringsAB100andAB99indicatesthatAB100isgreaterthanAB99since100isgreaterthan99.ArightjustifiedcomparisonofthestringsAC99andAB100indicatesthatAC99isgreatersinceCisgreaterthanB.

Input:string1(string),string2(string),[justification(LorR)]

Output:result(int8),canbe1forstring1islessthanstring2,0forbothstringsarethesame,1forstring1isgreaterthanstring2.

Examples.Ifmylink.mystring1containsthestring"AB99"and

mylink.mystring2containsthestring"AB100",thenthefollowingfunctionreturnstheresult1.Compare(mylink.mystring1,mylink.mystring2,L)Ifmylink.mystring1containsthestring"AB99"andmylink.mystring2containsthestring"AB100",thenthefollowingfunctionreturnstheresult1.Compare(mylink.mystring1,mylink.mystring2,R)

CompareNoCaseComparestwostringsforsorting,ignoringtheircase.

Input:string1(string),string2(string)


Examples.Ifmylink.mystring1containsthestring"ChocolateCake"andmylink.mystring2containsthestring"chocolatecake",thenthefollowingfunctionreturnstheresult1.ComparNoCase(mylink.mystring1,mylink.mystring2)

CompareNumComparesthefirstncharactersoftwostrings.

Input:string1(string),string2(string),length(int16)


Examples.Ifmylink.mystring1containsthestring"Chocolate"andmylink.mystring2containsthestring"ChoccyTreat",thenthefollowingfunctionreturnstheresult1.ComparNum(mylink.mystring1,mylink.mystring2,4)

CompareNumNoCaseComparesthefirstncharactersoftwostrings,ignoringtheircase.

Input:string1(string),string2(string),length(int16)


Examples.Ifmylink.mystring1containsthestring"chocolate"andmylink.mystring2containsthestring"ChoccyTreat",thenthefollowingfunctionreturnstheresult1.ComparNumNoCase(mylink.mystring1,mylink.mystring2,4)

ConvertConvertscharactersinthestringdesignatedinexpression.Convertsthecharactersspecifiedinfromlisttothecharactersspecifiedintolist.

Input:fromlist(string),tolist(string),expression(string)

Output:result(string) Examples.Ifmylink.mystring1containsthestring"NOWISTHE

TIME",thenthefollowingfunctionreturnsthestring"NOWYSXHEXYME".Convert("TI","XY",mylink.mystring1)

CountCountsthenumberoftimesasubstringoccursinastring.

Input:string(string),substring(string)

Output:result(int32) Examples.Ifmylink.mystring1containsthestring"chocolatedrops,

chocolateicecream,chocolatebars",thenthefollowingfunctionreturns3.Count(mylink.mystring1,"choc")

DcountCountsthenumberofdelimitedfieldsinastring.

Input:string(string),delimiter(string)


chocolateicecream,chocolatebars",thenthefollowingfunctionreturns3.Dcount(mylink.mystring1,",")

DownCaseChangesalluppercaselettersinastringtolowercase.


Output:result(string) Examples.Ifmylink.mystring1containsthestring"CaMelcAsE",then

thefollowingfunctionreturnsthestring"camelcase".DownCase(mylink.mystring1)

DQuoteEnclosesastringindoublequotationmarks.


Output:result(string) Examples.Ifmylink.mystring1containsthestringneedsquotes,thenthe

followingfunctionreturnsthestring"needsquotes".DQuote(mylink.mystring1)

FieldReturnsoneormoresubstringslocatedbetweenspecifieddelimitersinastring.Theargumentoccurrencespecifieswhichoccurrenceofthedelimiteristobeusedasaterminator.Theargumentnumberoptionallyspecifieshowmanysubstringstoreturn.

Input:string(string),delimiter(string),occurrence(int32),[number

(int32)] Output:result(string) Examples.Ifmylink.mystring1containsthestring"chocolatedrops,

chocolateicecream,chocolatebars,chocolatedippers",thenthefollowingfunctionreturnsthestring"chocolateicecream".Field(mylink.mystring1,",",2)Ifmylink.mystring1containsthestring"chocolatedrops,chocolateicecream,chocolatebars,chocolatedippers",thenthefollowingfunctionreturnsthestring"chocolateicecream,chocolatebars".Field(mylink.mystring1,",",2,2)

IndexFindsthestartingcharacterpositionofasubstring.Theargumentoccurrencespecifieswhichoccurrenceofthesubstringistobelocated.

Input:string(string)substring(string)occurrence(int32)


chocolateicecream,chocolatebars,chocolatedippers",thenthefollowingfunctionreturnsthevalue18.Index(mylink.mystring1,"chocolate",2)

LeftReturnstheleftmostncharactersofastring.

Input:string(string)number(int32)

Output:result(string) Examples.Ifmylink.mystring1containsthestring"chocolatedrops,

chocolateicecream,chocolatebars,chocolatedippers",thenthefollowingfunctionreturnsthestring"chocolate".Left(mylink.mystring1,9)

LenReturnsthelengthofastringincharacters.


Output:result(int32) Examples.Ifmylink.mystring1containsthestring"chocolate",thenthe

followingfunctionreturnsthevalue9.Len(mylink.mystring1)

NumReturns1ifstringcanbeconvertedtoanumber,or0otherwise.


Output:result(int32) Examples.Ifmylink.mystring1containsthestring"22",thenthe

followingfunctionreturnsthevalue1.Num(mylink.mystring1)Ifmylink.mystring1containsthestring"twentytwo",thenthefollowingfunctionreturnsthevalue0.Num(mylink.mystring1)

PadStringReturnthestringpaddedwiththespecifiednumberofpadcharacters.

Input:string(string)padstring(string)padlength(int32)

Output:result(string) Examples.IIfmylink.mystring1containsthestring"AB175",thenthe

followingfunctionreturnsthestring"AB17500000".PadString(mylink.mystring1,"0",5)

RightReturnstherightmostncharactersofastring.

Input:string(string)number(int32)

Output:result(string) Examples.Ifmylink.mystring1containsthestring"chocolatedrops,

chocolateicecream,chocolatebars,chocolatedippers",thenthefollowingfunctionreturnsthestring"dippers".Right(mylink.mystring1,7)

SoundexReturnsacodewhichidentifiesasetofwordsthatare(roughly)phoneticallyalikebasedonthestandard,openalgorithmforSOUNDEXevaluation.


Output:result(string) Examples.Ifmylink.mystring1containsthestring"Griffin"thenthe

followingfunctionreturnsthecode"G615".Soundex(mylink.mystring1)Ifmylink.mystring1containsthestring"Griphin"thenthefollowingfunctionalsoreturnsthecode"G615".Soundex(mylink.mystring1)

SpaceReturnsastringofnspacecharacters.

Input:length(int32)

Output:result(string) Examples.Ifmylink.mylengthcontainsthenumber100,thenthe

followingfunctionreturnsastringthatcontains100spacecharacters.Space(mylink.mylength)

SQuoteEnclosesastringinsinglequotationmarks.


Output:result(string) Examples.Ifmylink.mystring1containsthestringneedsquotes,thenthe

followingfunctionreturnsthestring'needsquotes'.SQuote(mylink.mystring1)

StrRepeatsastringthespecifiednumberoftime.


Output:result(string) Examples.Ifmylink.mystring1containsthestringneeds"choc",thenthe

followingfunctionreturnsthestring"chocchocchocchocchoc".Str(mylink.mystring1,5)

StripWhiteSpaceReturnsthestringafterremovingallwhitespacecharactersfromit.

Input:string(string)repeats(int32)


thenthefollowingfunctionreturnsthestring"toomanyspaces":StripWhiteSpace(mylink.mystring)

TrimRemoveallleadingandtrailingspacesandtabsplusreduceinternaloccurrencestoone.Theargumentstripcharoptionallyspecifiesacharacterotherthanaspaceoratab.Theargumentoptionsoptionallyspecifiesthetypeoftrimoperationtobeperformedandcontainsoneormoreofthefollowingvalues:ARemovealloccurrencesofstripchar

BRemovebothleadingandtrailingoccurrencesofstripcharDRemoveleading,trailing,andredundantwhitespacecharactersERemovetrailingwhitespacecharactersFRemoveleadingwhitespacecharactersLRemoveallleadingoccurrencesofstripcharRRemoveleading,trailing,andredundantoccurrencesofstripcharTRemovealltrailingoccurrencesofstripchar

Input:string(string)[stripchar(string)][options(string)] Output:result(string) Examples.Ifmylink.mystringcontainsthestring"Stringwithwhitespace

",thenthefollowingfunctionreturnsthestring"Stringwithwhitespace":Trim(mylink.mystring)

Ifmylink.mystringcontainsthestring"..Remove..redundant..dots....",thenthefollowingfunctionreturnsthestring"Remove.redundant.dots":Trim(mylink.mystring,".")Ifmylink.mystringcontainsthestring"Remove..all..dots....",thenthefollowingfunctionreturnsthestring"Removealldots":Trim(mylink.mystring,".","A")Ifmylink.mystringcontainsthestring"Remove..trailing..dots....",thenthefollowingfunctionreturnsthestring"Remove..trailing..dots":Trim(mylink.mystring,".","T")

TrimBRemovesalltrailingspacesandtabsfromastring.


Output:result(string) Examples.Ifmylink.mystringcontainsthestring"toomanytrailing

spaces",thenthefollowingfunctionreturnsthestring"toomanytrailingspaces":TrimB(mylink.mystring)

TrimFRemovesallleadingspacesandtabsfromastring.


Output:result(string) Examples.Ifmylink.mystringcontainsthestring"toomanyleading

spaces",thenthefollowingfunctionreturnsthestring"toomanyleadingspaces":TrimF(mylink.mystring)

TrimLeadingTrailingRemovesallleadingandtrailingspacesandtabsfromastring.



thenthefollowingfunctionreturnsthestring"toomanyspaces":TrimLeadingTrailing(mylink.mystring)

UpCaseChangesalllowercaselettersinastringtouppercase.


Output:result(string) Examples.Ifmylink.mystring1containsthestring"CaMelcAsE",then

thefollowingfunctionreturnsthestring"CAMELCASE".UpCase(mylink.mystring1)

VectorfunctionUsethevectorfunctiontoaccessanelementinavectorcolumn.ThefunctionisintheVectorcategoryoftheexpressioneditor.TheexamplesshowthefunctionasitappearsinaDerivationfieldintheTransformerstage.ElementAt

Accessesanelementofavector.Thevectorindexstartsat0.Thefunctioncanbeusedaspartof,orthewholeofanexpression.

Input:input_column(columnname)index(int)

Output:elementofvector Examples.Thefollowingexampleoutputsthesecondelementofthe

vectorinthecolumnmylink.myvector.ElementAt(mylink.myvector,2)Thefollowingexampleoutputsthesecondelementofthevectorinthecolumnmylink.myvectorandaddsoneit.ElementAt(mylink.myvector,2)+1

TypeconversionfunctionsUsethetypeconversionfunctionstochangethetypeofanargument.ThefollowingfunctionsareintheTypeConversioncategoryoftheexpressioneditor.Squarebracketsindicateanargumentisoptional.Thedefaultdateformatis%yyyy%mm%dd.TheexamplesshowthefunctionasitappearsinaDerivationfieldintheTransformerstage.Char

GeneratesanASCIIcharacterfromitsnumericcodevalue.Youcanoptionallyspecifytheallow8bitsargumenttoconvert8bitASCIIvalues.

Input:code(number),[allow8bits]

Output:result(char) Examples.ThefollowingexampleoutputstheASCIIcode65asthe

characterA.Char(65)

DateToStringReturnsthestringrepresentationofthegivendate.Theformatofthestringcanoptionallybespecified.

Input:date(date),[format(string)]

Output:result(string) Examples.Thefollowingexampleoutputsthedatecontainedinthe

columnmylink.mydatetoastring.Ifmylink.mydatecontainsthedate18thAugust,2009,thentheoutputstringis"20090818":DateToString(mylink.mydate)Thefollowingexampleoutputsthedatecontainedinthecolumnmylink.mydatetoastringwiththeformatdd:mm:yyyy.Ifmylink.mydatecontainedthedate18thAugust,2009,thentheoutputstringwouldbe"18:08:2009":DateToString(mylink.mydate,"%dd:%mm:%yyyy")

DateToDecimalReturnsthegivendateasapackeddecimalvalue.Ifyourtargetdecimalspecifiesascale,partofthedateappearsafterthedecimalpoint.Youcanoptionallyspecifyaformatstringthatspecifieshowthedateisstoredinthedecimalnumber.Thedefaultformatstringis"%yyyy%mm%dd",so,forexample,thedate20090825isstoredasthedecimalnumber20090825.Formatstringscanonlyspecifyaformatthatcontainsnumbers.Forexample,youcannotspecifyaformatstringsuchas"%yyyy%mm%dd",becausethehyphencharacter()cannotbestoredinapackeddecimalvalue.Thefollowingtokensarevalidforconversionstoorfromdecimalvalues:%yyyy(fourdigityear)

%yy(twodigityear)%NNNNyy(twodigityearwithcutoff)%mm(twodigitmonth)%dd(twodigitdayofmonth)%ddd(threedigitdayofyear)Theliteraldigits0to9arealsovalid.

Input:basedate(date)[,format(string)] Output:converted_date(decimal) Examples.Ifthecolumnmylink.basedatecontainsthedate20120818,

thenthefollowingfunctionstoresthedateasthedecimalnumber18082012:DateToDecimal(mylink.basedate,"%dd%mm%yyyy")Ifthecolumnmylink.basedatecontainsthedate20120818,andthetargetcolumnhasalengthof10andascaleof2,thenthefollowingfunctionstoresthedateasthedecimalnumber201208.18:DateToDecimal(mylink.basedate)

DecimalToDateReturnsthegivenpackeddecimalasadate.Boththesignandthescaleofthedecimalnumberareignoredwhenitisconvertedtoadate.Youcanoptionallyspecifyaformatstringthatspecifieshowthedateisstoredinthedecimalnumber.Thedefaultformatstringis"%yyyy%mm%dd",so,forexample,thedate20090825isstoredasthedecimalnumber20090825.Formatstringscanonly

specifyaformatthatcontainsnumbers.Forexample,youcannotspecifyaformatstringsuchas"%yyyy%mm%dd",becausethehyphencharacter()cannotbestoredinapackeddecimalvalue.Thefollowingtokensarevalidforconversionstoorfromdecimalvalues:%yyyy(fourdigityear)

%yy(twodigityear)%NNNNyy(twodigityearwithcutoff)%mm(twodigitmonth)%dd(twodigitdayofmonth)%ddd(threedigitdayofyear)Theliteraldigits0to9arealsovalid.

Input:basedec(decimal)[,format(string)] Output:date Examples.Ifthecolumnmylink.mydecdatacontainsthevalue18082012,

thenthefollowingfunctionreturnsthedate20120818:DecimalToDate(mylink.basedate,"%dd%mm%yyyy")Ifthecolumnmylink.mydecdatacontainsthevalue201208.18,thenthefollowingfunctionreturnsthedate20120818:DecimalToDate(mylink.basedate)

DecimalToDecimalReturnsthegivendecimalindecimalrepresentationwithprecisionandscalespecifiedinthetargetcolumndefinition.Theargumentrtypeoptionallyspecifiesaroundingtype,andissettooneofthefollowingvalues:ceil.Roundthesourcefieldtowardpositiveinfinity.Forexample,1.4>2,1.6>1.floor.Roundthesourcefieldtowardnegativeinfinity.Forexample,1.6>1,1.4>2.round_inf.Roundortruncatethesourcefieldtowardthenearestrepresentablevalue,breakingtiesbyroundingpositivevaluestowardpositiveinfinityandnegativevaluestowardnegativeinfinity.Forexample,1.4>1,1.5>2,1.4>1,1.5>2.trunc_zero.Discardanyfractionaldigitstotherightoftherightmostfractionaldigitsupportedinthedestination,regardlessofsign.Forexample,ifthedestinationisaninteger,allfractionaldigitsaretruncated.Ifthedestinationisanotherdecimalwithasmallerscale,roundortruncatetothescalesizeofthedestinationdecimal.Forexample,1.6>1,1.6>1.

Input:decimal(decimal)[,rtype(string)] Output:result(decimal) Examples.Ifthecolumnmylink.mydeccontainsthedecimalnumber

2.5345,thefollowingfunctionreturnsthedecimalnumber00000002.54.DecimalToDecimal(mylink.mydec,"ceil")Thefollowingfunctionreturnsthedecimalnumber00000002.53.DecimalToDecimal(mylink.mydec,"floor")Thefollowingfunctionreturnsthedecimalnumber00000002.53.DecimalToDecimal(mylink.mydec,"trunc_zero")Thefollowingfunctionreturnsthedecimalnumber00000002.53.DecimalToDecimal(mylink.mydec,"round_inf")Inalltheseexamples,thetargetdecimalhasalengthof10andascaleof2.

DecimalToDFloatReturnsthegivendecimalindfloatrepresentation.Theargument"fix_zero"optionallyspecifiesthatallzerodecimalvaluesareregardedasvalid(bydefault,decimalnumberscomprisingallzerosaretreatedasinvalid).

Input:decimal(decimal)[,"fix_zero"]

Output:result(dfloat) Examples.Ifthecolumnmylink.mydeccontainsthedecimalnumber

00000004.00thefollowingfunctionreturnsthedfloatnumber4.00000000000000000E+00.DecimalToDFloat(mylink.mydec,"fix_zero")Ifthecolumnmylink.mydeccontainsthedecimalnumber00012344.00thefollowingfunctionreturnsthedfloatnumber1.23440000000000000E+04.DecimalToDFloat(mylink.mydec,"fix_zero")Ifthecolumnmylink.mydeccontainsthedecimalnumber00012344.120thefollowingfunctionreturnsthedfloatnumber1.23441200000000010E+04.DecimalToDFloat(mylink.mydec,"fix_zero")Ifthecolumnmylink.mydeccontainsthedecimalnumber00012344.120thefollowingfunctionreturnsthedfloatnumber1.23441200000000010E+04.DecimalToDFloat(mylink.mydec)Ifthecolumnmylink.mydeccontainsthedecimalnumber00012344.000thefollowingfunctionreturnsthedfloatnumber1.23440000000000000E+04.DecimalToDFloat(mylink.mydec)

DecimalToStringReturnsthegivendecimalasastring.Theargument"fix_zero"optionallyspecifiesthatallzerodecimalvaluesareregardedasvalid(bydefault,decimalnumberscomprisingallzerosaretreatedasinvalid).Thiscoversthecasewherethesignbitsofthepackeddecimalrepresentationareall0aswellasallthecontentdigits.Thiscastisnotconsideredvalidunless"fix_zero"istrue.

Input:decimal(decimal)[,"fix_zero"]

Output:result(string) Examples.Ifthecolumnmylink.mydeccontainsthedecimalnumber

00000004.00,thefollowingfunctionreturnsthestring"4":DecimalToString(mylink.mydec,"suppress_zero")Ifthecolumnmylink.mydeccontainsthedecimalnumber00000004.00,thefollowingfunctionreturnsthestring"0000000000000000000000000004.0000000000".DecimalToString(mylink.mydec,"fix_zero")Ifthecolumnmylink.mydeccontainsthedecimalnumber00012344.00,thefollowingfunctionreturnsthestring"12344".DecimalToString(mylink.mydec,"suppress_zero")Ifthecolumnmylink.mydeccontainsthedecimalnumber00012344.00,thefollowingfunctionreturnsthestring"0000000000000000000000012344.0000000000".DecimalToString(mylink.mydec,"fix_zero")Ifthecolumnmylink.mydeccontainsthedecimalnumber00012344.120,thefollowingfunctionreturnsthestring"0000000000000000000000012344.1200000000".DecimalToString(mylink.mydec,"fix_zero")Ifthecolumnmylink.mydeccontainsthedecimalnumber00012344.120,thefollowingfunctionreturnsthestring"12344.12":DecimalToString(mylink.mydec,"suppress_zero")Ifthecolumnmylink.mydeccontainsthedecimalnumber00012344.120,thefollowingfunctionreturnsthestring"0000000000000000000000012344.120000000".DecimalToString(mylink.mydec)Ifthecolumnmylink.mydeccontainsthedecimalnumber00012344.000,thefollowingfunctionreturnsthestring"0000000000000000000000012344.0000000000".DecimalToString(mylink.mydec)

DecimalToTimeReturnsthegivenpackeddecimalasatime.Youcanoptionallyspecifyaformatstringthatspecifieshowthetimeisstoredinthedecimalnumber.Thedefaultformatstringis"%hh%nn%ss",so,forexample,thetime14:03:22isstoredasthedecimalnumber140322.Formatstringscanonlyspecifyaformatthatcontainsnumbers.Forexample,youcannotspecifyaformatstringsuchas"%hh:%nn:%ss",becausethecoloncharacter(:)cannotbestoredinapackeddecimalvalue.Thefollowingtokensarevalidforconversionstoorfromdecimalvalues:%hh(twodigithoursusing24hourclock)

%nn(twodigitminutes)%ss(twodigitseconds)%ss.N(twodigitseconds,plusthenumberoffractionaldigitsallowed.Thenumberoffractionaldigitsisfromonetosixinclusive).

Theliteraldigits0to9arealsovalid.Ifyourspecifiedformatincludesmicroseconds(forexample,%ss.4),thenthepositionofthedecimalpointisinferredinthedecimalvalue.Thepositionofthedecimalpointdoesnothavetocoincidewiththespecifiedscaleofthedecimal(forexample,scale=4).

Input:time(time)[,format(string)] Output:result(decimal) Examples:Ifthecolumnmylink.mytimedeccontainsthedecimalvalue

200658,thenthefollowingfunctionreturnsthetime20:06:58:DecimalToTime(mylink.mytimedec)Ifthecolumnmylink.mytimedeccontainsthedecimalvalue580620,thenthefollowingfunctionreturnsthetime20:06:58:DecimalToTime(mylink.mytimedec,"%ss%nn%hh")

DecimalToTimestampReturnsthegivenpackeddecimalasatimestamp.Youcanoptionallyspecifyaformatstringthatspecifieshowthetimestampisstoredinthedecimalnumber.Thedefaultformatstringis"%yyyy%mm%dd%hh%nn%ss",so,forexample,thetimestamp2009082514:03:22isstoredasthedecimalnumber20090825140322.Formatstringscanonlyspecifyaformatthatcontainsnumbers.Forexample,youcannotspecifyaformatstringsuchas"%yyyy/%mm/%dd%hh:%nn:%ss",becausetheslashcharacter(/)andthecoloncharacter(:)cannotbestoredinapackeddecimalvalue.Thefollowingtokensarevalidforconversionstoorfromdecimalvalues:%yyyy(fourdigityear)

%yy(twodigityear)%NNNNyy(twodigityearwithcutoff)%mm(twodigitmonth)%dd(twodigitdayofmonth)%ddd(threedigitdayofyear)%hh(twodigithoursusing24hourclock)%nn(twodigitminutes)%ss(twodigitseconds)%ss.N(twodigitseconds,plusthenumberoffractionaldigitsallowed.Thenumberoffractionaldigitsisfromonetosixinclusive).Theliteraldigits0to9arealsovalid.Ifyourspecifiedformatincludesmicroseconds(forexample,%ss.4),thenthepositionofthedecimalpointisinferredinthedecimalvalue.Thepositionofthedecimalpointdoesnothavetocoincidewiththespecifiedscaleofthedecimal(forexample,scale=4).

Input:timestamp(timestamp)[,format(string)] Output:result(decimal) Examples:Ifthecolumnmylink.mytimestampdeccontainsthevalue

19580818200658,thenthefollowingfunctionreturnsthetimestamp1958081820:06:58:DecimalToTimestamp(mylink.mytimestampdec)Ifthecolumnmylink.mytimestampdeccontainsthedecimalvalue200658580818,thenthefollowingfunctionreturnsthetimestamp1958081820:06:58:DecimalToTimestamp(mylink.mytimestampdec,"%hh%nn%ss%yy%mm%dd")

DFloatToDecimalReturnsthegivendfloatindecimalrepresentation.Theargumentrtypeoptionallyspecifiesaroundingtype,andissettooneofthefollowingvalues:ceil.Roundthesourcefieldtowardpositiveinfinity.Forexample,1.4>2,1.6>1.floor.Roundthesourcefieldtowardnegativeinfinity.Forexample,1.6>1,1.4>2.round_inf.Roundortruncatethesourcefieldtowardthenearestrepresentablevalue,breakingtiesbyroundingpositivevaluestowardpositiveinfinityandnegativevaluestowardnegativeinfinity.Forexample,1.4>1,1.5>2,1.4>1,1.5>2.trunc_zero.Discardanyfractionaldigitstotherightoftherightmostfractionaldigitsupportedinthedestination,regardlessofsign.Forexample,ifthedestinationisaninteger,allfractionaldigitsaretruncated.Ifthedestinationisanotherdecimalwithasmallerscale,roundortruncatetothescalesizeofthedestinationdecimal.Forexample,1.6>1,1.6>1.

Input:number(dfloat),[rtype(string)] Output:result(decimal) Examples.Ifthecolumnmylink.myfloatcontainsthedfloatnumber

2.534,thefollowingfunctionreturnsthedecimalnumber00000002.54.DFloatToDecimal(mylink.mydec,"ceil")Ifthecolumnmylink.myfloatcontainsthedfloatnumber2.534,thefollowingfunctionreturnsthedecimalnumber00000002.53.DFloatToDecimal(mylink.mydec,"floor")Ifthecolumnmylink.myfloatcontainsthedfloatnumber2.534,thefollowingfunctionreturnsthedecimalnumber00000002.53.DFloatToDecimal(mylink.mydec,"trunc_zero")Ifthecolumnmylink.myfloatcontainsthedfloatnumber2.534,thefollowingfunctionreturnsthedecimalnumber00000002.53.DFloatToDecimal(mylink.mydec,"round_inf")

DfloatToStringNoExp

Returnsthegivendfloatinitsstringrepresentationwithnoexponent,usingthespecifiedscale.

Input:number(dfloat),scale(string)

Output:result(string) Examples.Ifthecolumnmylink.myfloatcontainsthedfloatnumber

2.534,thenthefollowingfunctionreturnsthestring00000002.50:DfloatToStringNoExp(mylink.myfloat,2)

IsValidReturnswhetherthegivenstringisvalidforthegiventype.Validtypesare"date","decimal","dfloat","sfloat","int8","uint8","int16","uint16","int32","uint32","int64","uint64","raw","string","time","timestamp","ustring".Fordatatypesofdate,time,andtimestamp,youcanoptionallyspecifyaformatstring.Theformatstringdescribestheformatthatyourinputdatauseswhenitdiffersfromthedefaultformatsfordate,time,ortimestamp.Thedefaultformatfordateis%yyyy%mm%dd.Thedefaultformatfortimeis"%hh:%mm:%ss".Thedefaultformatfortimestampis%yyyy%mm%dd%hh:%mm:%ss".

Input:type(string),teststring(string)[,format(string)]

Output:result(int8) Examples.Ifthecolumnmylink.mystringcontainsthestring"1",thenthe

followingfunctionreturnsthevalue1.IsValid("int8",mylink.mystring)Ifthecolumnmylink.mystringcontainsthestring"380096.06",thenthefollowingfunctionreturnsthevalue0.IsValid("int8",mylink.mystring)

IsValidDateReturnswhetherthegivenvalueisvalidforthetypedate.

Input:testdate(date)

Output:result(int8) Examples.Ifthecolumnmylink.mydatecontainsthedate20110913,

thenthefollowingfunctionreturnsthevalue1.IsValidDate(mylink.mydate)Ifthecolumnmylink.mydatecontainsthestring"380096.06",thenthefollowingfunctionreturnsthevalue0,becausetheconvertedstringisnotavaliddate.IsValidDate(StringTodate(mylink.mydate))

IsValidDecimalReturnswhetherthegivenvalueisvalidforthetypedecimal.Iftheallzerosflagissetto0,thenanallzeroesrepresentationisnotvalid.Theallzerosflagissettozerobydefault.

Input:testvalue(decimal)[,allzerosflag(uint8)]

Output:result(int8) Examples.Ifthecolumnmylink.mynumcontainsthevalue310007.65,

thenthefollowingfunctionreturnsthevalue1.IsValidDecimal(mylink.mynum)Ifthecolumnmylink.mynumcontainsthestring"wakerobin",thenthefollowingfunctionreturnsthevalue0,becausetheconvertedstringisnotavaliddecimal.IsValidDecimal(StringToDecimal(mylink.mynum))

IsValidTimeReturnswhetherthegiventimeisvalidforthetypetime.

Input:testtime(time)

Output:result(int8) Examples.Ifthecolumnmylink.mytimecontainsthetime23:09:22,then

thefollowingfunctionreturnsthevalue1:IsValidTime(mylink.mytime)Ifthecolumnmylink.mydatecontainsthestring"IbnKayeed",thenthefollowingfunctionreturnsthevalue0,becausetheconvertedstringisnotavalidtime.IsValidTime(StringToTime(mylink.mytime))

IsValidTimestampReturnswhetherthegiventimestampisvalidforthetypetimestamp.

Input:testtimestamp(timestamp)

Output:result(int8) Examples.Ifthecolumnmylink.mytimestampcontainsthetime

2011091323:09:22,thenthefollowingfunctionreturnsthevalue1:IsValidTimestamp(mylink.mytimestamp)Ifthecolumnmylink.mytimestampcontainsthestring"oneoftwo",thenthefollowingfunctionreturnsthevalue0,becausetheconvertedstringisnotavalidtimestamp.IsValidTimestamp(StringToTimestamp(mylink.mytimestamp))

RawNumAtReturnstheintegervalueatthespecifiedindexvalueinthespecifiedrawfield.Theindexstartsat0.

Input:rawfield(raw),index(int32)

Output:result(int32) Examples.Ifthecolumnmylink.myrawcontainsarawvaluederived

fromthestring"hello",thenthefollowingfunctionreturnstheinteger0x68(theASCIIcodeforthecharacterh):RawNumAt(mylink.myraw,0)Ifthecolumnmylink.myrawcontainsarawvaluederivedfromthestring"hello",thenthefollowingfunctionreturns0becausethespecifiedindex

isoutofrange:RawNumAt(mylink.myraw,12)

RawToStringReturnsthegivenrawvalueasastringrepresentation.Youmustensurethattherawinputvaluecontainsasequenceofbytesthatarevalidascharactersinthetargetcharactersetinwhichtheoutputstringisused.Forexample,therawvalue{0xE00x410x42}isnotavalidsequenceofUTF8characters,sincetheleadbyte,0xE0,issupposedtobefollowedbyabyteintherange[0x80..0xBF].Ifarawvalue{xE0x41x42}ispassedtotheRawToStringfunction,therecouldbeanerroriftheoutputstringisthenaccessedasifitwereencodedinUTF8.

Input:rawfield(raw)

Output:result(string) Examples.Ifthecolumnmylink.myrawcontainsthevalue{0x310x31

0x300x350x320x320x300x39},thenthefollowingfunctionreturnsthestring"11052209".RawNumAt(mylink.myraw)

SeqGeneratesanumericcodevaluefromanASCIIcharacter.Youcanoptionallyspecifytheallow8bitsargumenttoconvert8bitASCIIvalues.

Input:Seq(char)

Output:result(number) Examples.ThefollowingexampleoutputsthecharacterAastheASCII

code65.Seq("A")

SeqAtReturnsthenumericcodepointvalueofthecharacteratthespecifiedpositioninthegivenstring.Theindexstartsat0.Ifthespecifiedindexisoutofrange,thefunctionreturns0.

Input:basestring(string),index(int32)

Output:result(int32) Examples.Ifthecolumnmylink.mystringcontainsthestring"horse",then

thefollowingfunctionreturnsthevalue0x6F(thatis,theASCIIvalueofthecharactero).SeqAt(mylink.mystring,1)

StringToDateReturnsadatefromthegivenstringinthegivenformat.Youdonothavetospecifyaformatstringifyourstringcontainsadateinthedefaultformatyyyymmdd.

Input:string(string)[,format(string)]

Output:result(date)

Examples:Ifthecolumnmylink.mystringcontainsthestring19580818,thenthefollowingfunctionreturnsthedate19580818.StringToDate(mylink.mystring)Ifthecolumnmylink.mystringcontainsthestring18:08:1958,thenthefollowingfunctionreturnsthedate19580818.StringToDate(mylink.mystring,"%dd:%mm:%yyyy")

StringToDecimalReturnsthegivenstringasadecimalrepresentation.Theargumentrtypeoptionallyspecifiesaroundingtype,andissettooneofthefollowingvalues:ceil.Roundthesourcefieldtowardpositiveinfinity.Forexample,1.4>2,1.6>1.floor.Roundthesourcefieldtowardnegativeinfinity.Forexample,1.6>1,1.4>2.round_inf.Roundortruncatethesourcefieldtowardthenearestrepresentablevalue,breakingtiesbyroundingpositivevaluestowardpositiveinfinityandnegativevaluestowardnegativeinfinity.Forexample,1.4>1,1.5>2,1.4>1,1.5>2.trunc_zero.Discardanyfractionaldigitstotherightoftherightmostfractionaldigitsupportedinthedestination,regardlessofsign.Forexample,ifthedestinationisaninteger,allfractionaldigitsaretruncated.Ifthedestinationisanotherdecimalwithasmallerscale,roundortruncatetothescalesizeofthedestinationdecimal.Forexample,1.6>1,1.6>1.

Input:string(string),[rtype(string)] Output:result(decimal) Examples.Ifthecolumnmylink.mystringcontainsthestring"19982.22",

andthetargetisdefinedashavingaprecisionof7andascaleof2,thenthefollowingfunctionreturnsthedecimal19983.22.StringToDecimal(mylink.mystring)Ifthecolumnmylink.mystringcontainsthestring"19982.2276",andthetargetisdefinedashavingaprecisionof7andascaleof2,thenthefollowingfunctionreturnsthedecimal19983.23.StringToDecimal(mylink.mystring,"ceil")

StringToRawReturnsastringinrawrepresentation.


Output:result(raw) Examples.Ifthecolumnmylink.mystringcontainsthestring"hello",and

thetargetcolumnisdefinedasbeingoftypeBinarythenthefollowingfunctionreturnsthevalue{0x680x650x6C0x6C0x6F}.StringToRaw(mylink.mystring)

StringToTime

Returnsatimerepresentationofthegivenstring. Input:string(string),[format(string)]

Output:result(time) Examples:Ifthecolumnmylink.mystringcontainsthestring"20:06:58",

thenthefunctionreturnsatimeof20:06:58.StringToTime(mylink.mystring)Ifthecolumnmylink.mystringcontainsthestring"20:6:58",thenthefunctionreturnsatimeof20:06:58.StringToTime(mylink.mystring,"%(h,s):$(n,s):$(s,s)")

StringToTimestampReturnsatimerepresentationofthegivenstring.

Input:string(string)[format(string)]

Output:result(time) Examples:Ifthecolumnmylink.mystringcontainsthestring

"1958080820:06:58",thenthefunctionreturnsthetimestamp1958080820:06:58.StringToTimestamp(mylink.mystring)Ifthecolumnmylink.mystringcontainsthestring"8/8/195820:6:58",thenthefunctionreturnsthetimestamp1958080820:06:58.StringToTimestamp(mylink.mystring,"%(d,s)/%(m,s)/%yyyy%(h,s):$(n,s):$(s,s)")

StringToUstringReturnsaustringfromthegivenstring,optionallyusingthespecifiedmap(otherwiseusesprojectdefault).

Input:string(string),[mapname(string)]

Output:result(ustring) Examples:Ifthecolumnmylink.mystringcontainsthestring"11052009",

thenthefollowingfunctionreturnstheustring"11052009"StringToUstring(mylink.mystring)

TimestampToDateReturnsadatefromthegiventimestamp.

Input:timestamp(timestamp)

Output:result(date) Examples:Ifthecolumnmylink.mytimestampcontainsthetimestamp

1958081820:06:58,thenthefollowingfunctionreturnsthedate19580818:TimestampToDate(mylink.mytimestamp)

TimestampToDecimalReturnsthegiventimestampasapackeddecimal.Youcanoptionallyspecifyaformatstringthatspecifieshowthetimestampisstoredinthedecimalnumber.

Thedefaultformatstringis"%yyyy%mm%dd%hh%nn%ss",so,forexample,thetimestamp2009082514:03:22isstoredasthedecimalnumber20090825140322.Formatstringscanonlyspecifyaformatthatcontainsnumbers.Forexample,youcannotspecifyaformatstringsuchas"%yyyy/%mm/%dd%hh:%nn:%ss",becausetheslashcharacter(/)andthecoloncharacter(:)cannotbestoredinapackeddecimalvalue.Thefollowingtokensarevalidforconversionstoorfromdecimalvalues:%yyyy(fourdigityear)

%yy(twodigityear)%NNNNyy(twodigityearwithcutoff)%mm(twodigitmonth)%dd(twodigitdayofmonth)%ddd(threedigitdayofyear)%hh(twodigithoursusing24hourclock)%nn(twodigitminutes)%ss(twodigitseconds)%ss.N(twodigitseconds,plusthenumberoffractionaldigitsallowed.Thenumberoffractionaldigitsisfromonetosixinclusive).Theliteraldigits0to9arealsovalid.Ifyourspecifiedformatincludesmicroseconds(forexample,%ss.4),thenthepositionofthedecimalpointisinferredinthedecimalvalue.Thepositionofthedecimalpointdoesnothavetocoincidewiththespecifiedscaleofthedecimal(forexamplescale=4).

Input:timestamp(timestamp)[,format(string)] Output:result(decimal) Examples:Ifthecolumnmylink.mytimestampcontainsthetimestamp

1958081820:06:58,thenthefollowingfunctionreturnsthedecimalvalue19580818200658:TimestampToDecimal(mylink.mytimestamp)Ifthecolumnmylink.mytimestampcontainsthetimestamp1958081820:06:58,thenthefollowingfunctionreturnsthedecimalvalue200658580818:TimestampToDecimal(mylink.mytimestamp,"%hh%nn%ss%yy%mm%dd")

TimestampToStringReturnsastringfromthegiventimestamp.

Input:timestamp(timestamp)[format(string)]

Output:result(string) Examples:Ifthecolumnmylink.mytimestampcontainsthetimestamp

1958081820:06:58,thenthefunctionreturnsthestring"1958081820:06:58".TimestampToString(mylink.mytimestamp)Ifthecolumnmylink.mytimestampcontainsthetimestamp1958081820:06:58,thenthefunctionreturnsthestring"18/08/195820:06:58":TimestampToString(mylink.mytimestamp,"%dd/%mm/%yyyy%hh:$nn:$ss")

TimestampToTimeReturnsthestringrepresentationofthegiventimestamp.

Input:timestamp(timestamp)

Output:result(time) Examples:Ifthecolumnmylink.mytimestampcontainsthetimestamp

1958081820:06:58,thenthefunctionreturnsthetime20:06:58:TimestampToTime(mylink.mytimestamp)

TimeToStringReturnsastringfromthegiventime.

Input:timestamp(timestamp)[format(string)]

Output:result(time) Examples:Ifthecolumnmylink.mytimecontainsthetime20:06:58,then

thefollowingfunctionreturnsthestring"20:06:58":TimeToString(mylink.mytime)Ifthecolumnmylink.mytimecontainsthetime20:06:58,thenthefollowingfunctionreturnsthestring"58:06:20":TimeToString(mylink.mytime,"%ss:$nn:$hh")

TimeToDecimalReturnsthegiventimeasapackeddecimal.Youcanoptionallyspecifyaformatstringthatspecifieshowthetimeisstoredinthedecimalnumber.Thedefaultformatstringis"%hh%nn%ss",so,forexample,thetime14:03:22isstoredasthedecimalnumber140322.Formatstringscanonlyspecifyaformatthatcontainsnumbers.Forexample,youcannotspecifyaformatstringsuchas"%hh:%nn:%ss",becausethecoloncharacter(:)cannotbestoredinapackeddecimalvalue.Thefollowingtokensarevalidforconversionstoorfromdecimalvalues:%hh(twodigithoursusing24hourclock)

%nn(twodigitminutes)%ss(twodigitseconds)%ss.N(twodigitseconds,plusthenumberoffractionaldigitsallowed.Thenumberoffractionaldigitsisfromonetosixinclusive).Theliteraldigits0to9arealsovalid.

Ifyourspecifiedformatincludesmicroseconds(forexample,%ss.4),thenthepositionofthedecimalpointisinferredinthedecimalvalue.Thepositionofthedecimalpointdoesnothavetocoincidewiththespecifiedscaleofthedecimal(forexamplescale=4).

Input:time(time)[,format(string)] Output:result(decimal) Examples:Ifthecolumnmylink.mytimecontainsthetime20:06:58,then

thefollowingfunctionreturnsthedecimalvalue200658:TimeToDecimal(mylink.mytime)Ifthecolumnmylink.mytimecontainsthetime20:06:58,thenthefollowingfunctionreturnsthedecimalvalue580620:TimeToDecimal(mylink.mytime,"%ss%nn%hh")

UstringToStringReturnsastringfromthegivenustring,optionallyusingthespecifiedmap(otherwiseusesprojectdefault).

Input:string(ustring)[,mapname(string)]

Output:result(string) Examples:Ifthecolumnmylink.myustringcontainstheustring

"11052009",thenthefollowingfunctionreturnsthestring"11052009":UstringToString(mylink.myustring)

UtilityfunctionsTheutilityfunctionshaveavarietyofpurposes.ThefollowingfunctionsareavailableintheUtilitycategory(squarebracketsindicateanargumentisoptional):GetEnvironment

Returnsthevalueofthegivenenvironmentvariable. Input:environmentvariable(string)

Output:result(string) Examples.Ifyouqueriedthevalueoftheenvironmentvariablename

APT_RDBMS_COMMIT_ROWSthenthefollowingderivationmightreturnthevalue"2048".GetEnvironment("APT_RDBMS_COMMIT_ROWS")

GetSavedInputRecordThisfunctionisusedtoimplementtheaggregatingofdataontheinputlinkofaTransformerstage.YoucalltheGetsSavedInputRecordfunctiontoaretrieveacopyofaninputrowthatyouhavepreviouslysavedtoacachearea.Thefunctionretrievesthenextinputrowfromthecache(intheorderinwhichtheyweresavedtothecache)andmakesitthecurrentinputrow.Theretrievedrowoverrideswhatwasthecurrentinputrow,andsoanyderivationusinganinputcolumnvaluewill

usethevalueofthatcolumnintheinputrowretrievedfromthecache,notwhatwaspreviouslythecurrentinputrow.YoumustcallGetSavedInputRecordinaloopvariablederivation,youcannotcallitfromanywhereelse.Forexample,youcannotcallGetSavedInputRecordintheLoopConditionexpression.YoucancallGetSavedInputRecord,multipletimesandretrievethenextcachedrowoneachcall.UsetheSaveInputRecordfunctiontostorerowstothecache.GetSavedInputRecordreturnsthecacheindexnumberoftherecordretrievedfromthatcache.

Input:

Output:cache_index_number Examples.Thefollowingexampleisthederivationofaloopvariable

namedSavedRecordIndexinaTransformerstage:SavedRecordIndex:GetSavedInputRecord()

NextSKChainThisfunctionisusedintheSlowlyChangingDimensionstageasthederivationforacolumnwiththeSKChainpurposecode.ThefunctionisnotusedintheTransformerstage.NextSKChainreturnsthevalueofthesurrogatekeycolumnforthenextrowinthechain,orthevaluethathasbeenspecifiedtouseforthelastrecordinthechain.

Input:last_chain_value(int64)

Output:surrogate_key_value(int64) Examples.Ifyouspecifythefollowingfunctioninthederivationfieldfor

aSKChaincolumninanSCDstage,theoutputcolumncontainsthevalueofthesurrogatekeyofthenextrecordinthechain,orthevalue180858ifthisisthelastrowinthechain.NextSKChain(180858)

NextSurrogateKeyReturnsthevalueofthenextsurrogatekey.Youmusthavepreviouslysetupyoursurrogatekeysource,anddefineddetailsontheSurrogateKeytaboftheStagepageoftheTransformerpropertieswindow.

Input:

Output:surrogate_key_value(int64) Example.Thederivationfieldofyoursurrogatekeycolumncontainsthe

followingfunction:NextSurrogateKey()

PrevSKChainThisfunctionisusedintheSlowlyChangingDimensionstageasthederivationforacolumnwiththeSKChainpurposecode.ThefunctionisnotusedintheTransformerstage.PrevSKChainReturnsthevalueofthesurrogatekeycolumnforthepreviousrecordinthechain,orthevaluethathasbeenspecifiedtouseforthefirstrecordinthechain.

Input:first_chain_value(int64)

Output:surrogate_key_value(int64) Examples.Ifyouspecifythefollowingfunctioninthederivationfieldfor

aSKChaincolumninanSCDstage,theoutputcolumncontainsthevalueofthesurrogatekeyofthepreviousrecordinthechain,orthevalue121060ifthisisthelastrowinthechain.PrevSKChain(121060)

SaveInputRecordThisfunctionisusedtoimplementtheaggregatingofdataontheinputlinkofaTransformerstage.YoucalltheSaveInputRecordfunctiontosaveacopyofthecurrentinputrowtoacachearea.Thefunctionreturnsthecountofrecordsinthecache,startingfrom1.YoucancallSaveInputRecordfromwithinthederivationofastagevariableintheTransformerstage.YoucancallSaveInputRecordmultipletimesforthesameinputrow.Thefirstcalladdstheinputrowtothecacheandeachsubsequentcalladdsaduplicateofthatsameinputrowintothecache.So,forexample,ifSaveInputRecordiscalledthreetimesforoneinputrecord,thenthecachewillcontainthreerows,eachidenticaltotheoriginalinputrow.UsetheGetSavedInputRecordfunctiontoretrievetherowsthatyouhavestored.

Input:

Output:cache_record_count(int64) Examples.Thefollowingexampleisthederivationofastagevariable

namedNumSavedRecordsinaTransformerstage:NumSavedRecords:SaveInputRecord()

Transformer All Functions in Datastage

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