How Do I Load Data Let Me Count The Ways · PDF fileHow Do I Load Data TH Technology How Do I...

TH Technology

Karen [email protected]

http://www.thtechnology.com

How Do I Load Data …Let Me Count The Ways

mailto:[email protected]

http://www.thtechnology.com/

TH Technology

Karen [email protected]

http://www.thtechnology.com

APEX Data Loading Options

mailto:[email protected]

http://www.thtechnology.com/

How Do I Load Data …

TH Technology

How Do I Load Data? : Agenda

Oracle Data Loading Options

DBAs - Developers - End Users

APEX Data Loading Options

File Upload

Data Load Wizard2

XLS Upload – APEX Listener

WebSheets – Copy/Paste, Add Row

TH Technology


About Me …

Karen Cannell ~ Consultant, TH Technology

SW Engineer 25+ years, Oracle since 1994. Building APEX apps for government, medical, engineering industries.Leveraging the Oracle 10g,11g (now 12c) suite of tools

Beginning Application Express, APress, 2011Agile Application Express, APress, 2011

Editor, ODTUG Technical JournalVolunteer to author ODTUG Journal Articles!

Using APEX since the HTMLDB beginning


TH Technology

About You … (Audience Background)

New to APEX?

APEX Experience?

Previous Tools?

APEX Training?

Version 2.0? 3.1 ? 3.2 ? 4.1?


TH Technology

How DO I Load Data into Oracle?

Load Data Into Oracle

7,340,000 hits

SQL Loader

Oracle Database Utilities

Load Excel Data into Oracle


TH Technology


Load Data Into APEX

317,000 hits

Import Excel Data …

APEX Data Loader

Load Text File into APEX


TH Technology


Load XLS Data Into APEX

1,830,000 hits

Import Excel File …

APEX Data Loader

Load Excel Data …

TH Technology


Load Data into Oracle - Options

What Are the Options?

Commercial Solutions - Excel-DB, Quickload

Warehouse Builder, ETL Tools

Oracle Data Integrator

http://www.oracle.com/technetwork/middleware/data-integrator/overview/index.html


Oracle Data Pump

SQL Loader

External Tables



TH Technology


Load Data into Oracle, cont’d

ODBC Connections

IDEs w/built-In Data Loaders

Custom Code:

Java

PL/SQL Using UTL_FILE

Scripting from XLS Columns

Java and PL/SQL

Perl

Other

TH Technology


Let’s Focus …

TH Technology


Load Data into APEX

Import Excel Data into Oracle …

APEX Data Loader

“Load Excel Data”

95% Say XLS but Really are CSV

The Apex Data Loader is a java based application that can bulk process the insert, update and delete on all object data into and

build queries to extract data out of salesforce.com using the Apex Web Services

(SOAP) API.

http://salesforce.com/

TH Technology


Our Problem

“Load Data into Oracle”

40% Fixed-Format Text Files

60% Excel Spreadsheets

Several XLS Formats

200+ Files Monthly

Locations All Over the World

Some Networked, Some Not

Varying Volume of Data

TH Technology


Which to Choose?

It Depends Application

Source

Target ( Table?)

Amount of Data

How Often ? 1 or Many

Audience End Users

Resources $$

Time $$

TH Technology


Which Make Sense for APEX ?


PL/SQL IDE

No Additional Licenses

PL/SQL Code

No Complex Setup

Developer-Friendly

End User Friendly

TH Technology



Oracle Data Pump

Oracle DB to Oracle DB

Faster than EXP and IMPEXPDP 2x faster than EXP

IMPDP 15-45x faster than IMP

Jobs can be Restarted

Supports Network Import and ExportLoad one instance form another

Remote export

TH Technology


Oracle Database Utilities, cont’d

SQL Loader

External files into Tables

Variety of formats

Filtering

Multiple Table Load in One Load Session

Conventional

Direct Path

External Table Load

TH Technology


Oracle Database Utilities, cont’d

External Tables

External files into Tables

Variety of Formats

Preprocessing Capability

External Tables to Pull

RPT Files

CSV Files - That We Can Get

TH Technology


Oracle Database – Database Link

Don’t Forget the Database Link!

SELECT …

FROM table@db_link

Simple, Direct

Requires Communication

Ask!

TH Technology


Use your IDE

SQL Developer

PL/SQL Developer

Toad

Others …

Best for One-Time Load

TH Technology


SQL Developer – Data Load Option

Import Data …

Wizard

TH Technology


SQL Developer – Import Data …

Import File Formats

.XLS / XLSX

.CSV

.TSV (tab)

.DSV ( SQL

Server)

TH Technology



Import Wiz

Detects

• File type

• Delimiter

• Skip Row

TH Technology



INSERT or

Generate

INSERT

Script)

TH Technology



Select

Columns

to

Import

TH Technology



Map

Source

to

Table

Columns

TH Technology



Verify

TH Technology



Finished!

XLS and XLSX* File Load in Very Few Clicks!

*XLSX in SQL Developer 3.1

TH Technology



What About XLSX?

• SQL Dev 3.0 – No

• SQL Developer 3.1 – Yes

XLS/XLSX File Load in Very Few Clicks!

TH Technology



Pros

One Shot Data Load

Delimiter (, TAB, others)

Flexible Columns

Flexible Mapping

XLS File

Can be Faster than APEX Data Load

Wizard

Cons

Table Must Be Defined

Cannot Integrate into App

Tedious to Repeat

IDE Specific

One Shot Data Load

Not for End Users

TH Technology


APEX Data Load/Unload Utility

APEX From the Beginning

Easy Load of Spreadsheet or XML Data

New or Existing Table

Upload File Or Copy/Paste

Delimiter Option

Column by Column Selection

TH Technology



TH Technology



1st Row Column Heading

TH Technology



TH Technology



Specify PK and Trigger

Finish

TH Technology


APEX Data Load Utility

Pros

Simple: Point-Click-Done

Flexible Format

Spreadsheet Convenience

Creates Table

Copy/Paste Option

Cons

Many Steps

Single Table

No XLS Upload (Must Copy/Paste or Save as CSV)

One-Time

Not for End Users

TH Technology


What About the End User?

APEX Standard File Browse + Custom Code

Data Load Wizard Wizard

APEX Manual Data Load Wizard End User-ized

APEX Web Sheet Data Grid

Copy/Paste, Data Entry

APEX Listener XLS Upload

File Browse + XLS2COLLECTION

TH Technology


APEX File Browse + Custom Code

Most Common (Still)

File Browse Item

Process (to Staging)

Process To Destination Table(s)

MANY MANY OPTIONS …

All Require Custom Code

TH Technology



File Browse Item

WWV_FLOW_FILES – Original Way

BLOB column – New Option w APEX 4+

TH Technology



WWV_FLOW_FILES – Traditional Way

File uploads to APEX Table WWV_FLOW_FILES

Move Records to a Custom Table (i.e. Staging Table)

Clean up!

Files accumulate in APEX_FILES Tablespace

TH Technology



BLOB Column – New w/ APEX 4

File Stored in BLOB Column of Table Specified in Automatic Row Processing (DML) Process

Column Specified in Item Source

Table Must Have

BLOB

Filename

MIME Type

CHARSET

Saves an Archiving Step

TH Technology



BLOB Column – New w/ APEX 4

TH Technology



WWV_FLOW_FILES

TH Technology



LOCAL_UPLOAD_FILES

TH Technology



Parse / Load Process

Read Blob into local BLOB variable

Read Records from Blob

Load Records into Destination Objects

TH Technology



Reusable Parse/ Load Process

File Browse Item

Load File to WWV_FLOW_FILE

Generic Parse File Package

Generic File Upload Utility

Generic Store to APEX Collection

Process Code per Use/Table/Format

Custom Code, But Less of It

TH Technology


Generic Parse File Utility Package

Parse File to Collection

Load Collection to Specified Table

Columns Must Match, or Adjust Code

Reusable Code, Pages for Any Upload File/Table

Saves One Part of Custom Code

Custom Processing from Stage Table Required

Custom Code, But Less of It

TH Technology



Parse File Process

Read Blob into local BLOB variableBEGIN

SELECT blob_content

INTO l_blob

FROM wwv_flow_files

WHERE name=p_file_name;

EXCEPTION

WHEN NO_DATA_FOUND THEN

raise_application_error(-20000,

'File not found, id='||p_file_name);

END;

Or BLOB column

from your BLOB table

TH Technology



Parse File Process

Read Records from Blob VariableTYPE varchar2_t IS TABLE OF VARCHAR2(32767)

INDEX BY binary_integer;

l_records VARCHAR2_T;

…

get_records(l_blob,l_records);

…

-- Initialize the APEX collection

apex_collection.create_or_truncate_collection(

p_collection_name);

TH Technology


PROCEDURE get_records(p_blob IN blob,p_records OUT varchar2_t)

IS

l_sep VARCHAR2(2) := chr(13)||chr(10);

l_last INTEGER;

l_current INTEGER;

BEGIN

IF (NVL(DBMS_LOB.INSTR(p_blob,

utl_raw.cast_to_raw(l_sep),1,1),0)=0) THEN

l_sep := chr(10);

END IF;

l_last := 1;

LOOP

l_current := dbms_lob.INSTR( p_blob,

utl_raw.cast_to_raw(l_record_separator), l_last, 1 );

EXIT WHEN (nvl(l_current,0) = 0);

p_records(p_records.count+1) :=

utl_raw.cast_to_varchar2(

DBMS_LOB.SUBSTR(p_blob,l_current-l_last,l_last));

l_last := l_current+length(l_record_separator);

END LOOP;

END get_records;

TH Technology


LOOP

l_current := dbms_lob.INSTR( p_blob,

utl_raw.cast_to_raw(l_record_separator), l_last, 1 );

EXIT WHEN (nvl(l_current,0) = 0);

p_records(p_records.count+1) :=

utl_raw.cast_to_varchar2(

DBMS_LOB.SUBSTR(p_blob,l_current-l_last,l_last));

l_last := l_current+length(l_record_separator);

END LOOP;

Loop to read records from the BLOB, line by line(separator to separator)

TH Technology



Parse File Process: Read from Blob,

Load CollectionFOR i IN 2..l_records.count LOOP

csv_to_array(l_records(i),l_record);

l_seq_id := apex_collection.add_member(p_collection_name,'dummy');

FOR i IN 1..l_record.count LOOP

apex_collection.update_member_attribute(

p_collection_name=> p_collection_name,

p_seq => l_seq_id,

p_attr_number => i,

p_attr_value => l_record(i));

END LOOP;

END LOOP;

TH Technology



Parse File Process: Read Blob, Load Collection

Insert from Collection to Table…

l_ddl := ‘INSERT INTO '||p_table_name||' '||

‘SELECT '||v(p_columns_item)||' '||

‘FROM apex_collections '||

‘WHERE seq_id >= 1 and collection_name='''||

p_collection_name||'''';

EXECUTE IMMEDIATE l_ddl;

…

TH Technology



Parse File Process: Read Blob, Load Collection, Insert,

Remove File

-- Cleanup file!

DELETE FROM wwv_flow_files WHERE name=p_file_name;

TH Technology



Process to Destination Table(s)

INSERT /* +append */ … SELECT … FROM staging

MERGE statement

Whatever is Required for Your Business

Custom Code

TH Technology


File Browse & Custom Code

Pros

Custom Code

Custom Solution

Cons

Custom Code

Resources

Maintenance

One-of Solution

TH Technology



The SQL Workshop Data Load Utility End-User-ized

Page Type

Creates a Shared Component

TH Technology



Wizard to Create A Data Load Wizard

Create Page Data Loading

TH Technology



TH Technology



Define Table Lookups

TH Technology



Add Transforms

To Upper/Lower, R/L/Trim, Single Whitespace

TH Technology



Page/Region/Breadcrumb Names

TH Technology



Define Tabs (if any)

TH Technology



Define Branches

TH Technology



Confirmation

TH Technology


Data Load Wizard - Result

Working Upload for our USERS table

TH Technology


Data Load Wizard

End User Sees:

Data Load Progression

Chance to Select Row to Include/Ignore

Failed Rows at the End

Chance to Back Out Load?

Chance to Reload Clean?

TH Technology


Data Load Wizard

Upload OR Copy/Paste

Data Limit ==

Specify Delimiter

Specify Enclosed By

Specify Currency, Group Separator, Decimal Characters

TH Technology


Data Load Wizard - Options

TH Technology


Data Load Wizard – Pro’s/Con’s

Pros

Flexible Form

Delimiter Option

1st Row Heading Opt

Currency – Group Separator – Decimal

Mapping Built In

Repeatable for End User

Reusable for Developer

Cons

Too Much for End User??

No XLS

Copy/Paste Size Limit

Upload Size Limit ??

Single Transform per Column

Home

http://localhost:8080/apex/f?p=4500:1000:6561482008021805

TH Technology



Is It Foolproof?

No:

Ex: RPT file …. What does this means?

Too Many Columns?

Too Few?

TH Technology



Can I trick it into taking an XLS?

No:

TH Technology


Data Load Wizard

Can I Make it “Better”?

Try:

Default/Eliminate All Options

Eliminate Load/Unload Column Mapping

Catch/Warn of File Type, # Columns Errors

Load the Collection Behind the Schemes

TH Technology


Data Load Wizard – Behind the Scenes

Usual Expected Items

FILE_BROWSE

TH Technology


Data Load Wizard – P 2

Parse Uploaded Data

Single Process of Type Parse Uploaded Data

List of Parameters

Fires upon Next

TH Technology


TH Technology



Process Uploaded Data

Single Process of Type Process Uploaded Data

List of Parameters

Fires upon Next

TH Technology



Session Info

Collections

Character Columns

Numeric Columns

Date Columns

TH Technology


TH Technology



Pros

In-App

Straightforward

Reusable

No Custom Code for Data Load into DB

Cons

Too Many End User Steps

Still Need Custom Processing Code for Staging to Tables

IF get P1 Finish by Loading Collection,

have a Two-Step File Upload for End Users!

TH Technology



File Browse Item

Load File to WWV_FLOW_FILE

Parsing File

Custom Code per Use/Table/Format

Generic File Upload Utility

Custom Process to Destination Tables

TH Technology


Parse File to Collection

Loads Collection to Specified Table

Table Exist or Not

Options

Reusable for Any Upload File/Table

Saves One Part of Custom Code

Custom Processing from Stage Table Required


TH Technology



Demo

TH Technology


XLS Upload via APEX Listener

Must Deploy via APEX Listener

Current Release 1.1.3…

Allows Upload of XLS File into a Collection

Best Reference: (from RMOUG 2010)

http://krisrice.blogspot.com/2010/02/another-apex-listener-ea-more-knobs-to.html



TH Technology



Install APEX Listener

Deploy

Edit apex_config.xml

Add Configuration Choices:

<entry key="apex.excel2collection">true</entry>

<entry key="apex.excel2collection.onecollection">true</entry>

<entry key="apex.excel2collection.name">EXCEL_COLLECTION</entry>

<entry key="apex.excel2collection.useSheetName">true</entry>

TH Technology



Configuration Options:

Turn Feature On:

<entry key="apex.excel2collection">true</entry>

One Collection per Worksheet:

<entry key= "apex.excel2collection.onecollection">true|false</entry>

TH Technology



Configuration Options:

Specify Name for All Collections:

<entry key=

"apex.useSheetName">true|false</entry>

false == sequential sheet name

true == uses sheet name

Specify Name of Collection for All Collections:

<entry key=

"apex.excel2collection.collection.name">MY_COLLECTION</entry>

TH Technology



File Browse Item

WWV_FLOW_FILES option

Page Item Button

Name or REQUEST = XLS2COLLECTION

Report Region:SELECT *

FROM apex_collectionsWHERE collection_name = ‘MY_COLLECTION’

TH Technology



TH Technology



TH Technology



“Files ending with .xls or .xlsx will be processed.”

BUT

.xls process

Macro-Enabled .xls process

.XLSX do NOT Process as of APEX Listener 1.1.3.243.11.40

.XLSX will Process as of v2

Coming Soon!

TH Technology


XLSX Upload via APEX Listener

TH Technology


XLSX Upload via APEX Listener

SEVERE: service exception:org.apache.poi.poifs.filesystem.OfficeXmlFileException: The supplied data appears to be in the Office 2007+ XML. You are calling the part of POI that deals with OLE2 Office Documents. You need to call a different part of POI to process this data (eg XSSF instead of HSSF)

TH Technology



Formulas Translate Literally

Ex: IF(E2="","",VLOOKUP(E2,$AE$4:$AF$218,2,FALSE))

TH Technology



STILL Need Custom Code to Process Data from Collection to Database Table(s)

TH Technology



Pros

XLS File – No Need to Save As CSV

Straightforward

Reusable

Less Custom Code

Cons

APEX Listener Deployment

Embedded Formulas

No XLSX - May Need a Save As Step

Will Have XLSX in V2

TH Technology


APEX Websheets

Data Grid Allows

Copy/Paste

Spreadsheet-Like Edits

Data Grid w/in Page

Custom Code Required to Transfer Data to Main Schema Tables

TH Technology


Editable Data in Websheet

TH Technology


APEX Websheets

Demo

TH Technology


Pull Data From Websheet into App

Look at APEX$_WS Tables:

APEX$_WS_ROW – the data

APEX$_WS_HISTORY – iff you care about who changed what when

Need to process from SQL Dev table to “real” tables

TH Technology


APEX WebSheets

Pros

Copy/Paste

Spreadsheet-Like Entry, Edits

End User Can Build

Cons

Custom Code to Create Websheet, Data Grid?

Custom Code Required to Pull Data into Schema Objects

Custom Code to Maintain Worksheet / Data Grid

More Code Than Other Solutions ?

TH Technology


Our Solution

Problem

RPT Files

XLS files

Different Formats

200+, Monthly

Users Cannot “Save as CSV”

Must Support Edits

Varying Volume

Limited Network

Solution

Tabular Forms - 4

Macro to Save as RPT

External TablesGenerated RPT

LIS Output RPT Files

Upload File Process (to be

retired)

Custom ProcessingRPT – LI Systems

RPT – Spreadsheet Templates

TH Technology


APEX Data Load Options

TH Technology


Nice to Have … Future?

1-Step Data Load Wizard

Copy/Paste OR

Upload XLSX

Easiest for Non-Networked, Low(er) Volume End Users

TH Technology


Some Last Thoughts …

Forms

Create/Edit One Row

Tabular Forms

Enter Many Rows

Java Solution

.JSP to load XLS directly

Presume this means XLSX too!

TH Technology


How Do I Load Data ?

APEX-based Solution

Weigh Requirements

Source Data

End User Capabilities

Resources

Time

No One-Size-Fits-All

Apply Common Sense

TH Technology


TH Technology


Common Sense Test …

Two men play 5 games of checkers. Each wins the same # of games. There are no ties.

How can this be?

They are not playing each other.


TH Technology

References

Upload File into APEX

oraexplorer.com – Ittichai

http://oraexplorer.com/2007/11/apex-to-upload-text-file-and-write-into/

More at avdeo.com In Oracle Milieu

http://avdeo.com/2008/05/21/uploading-excel-sheet-using-oracle-application-express-apex/






TH Technology

References

Oracle Data Integratorhttp://www.oracle.com/technetwork/middleware/data-integrator/overview/index.html


SQL Loader – External Tableshttp://www.oracle.com/technetwork/database/enterprise-

edition/index-093639.html

SQL Developer

http://www.oracle.com/technetwork/developer-tools/sql-developer/overview/index.html



http://www.oracle.com/technetwork/database/enterprise-edition/index-093639.html

http://www.oracle.com/technetwork/database/enterprise-edition/index-093639.html


TH Technology

References

APEX Listener XLS Upload – Kris Rice Blog


A Java-and-PL/SQL based XLS to CSV Option

http://www.dynamicpsp.com/!go?ln=nfaq&faq=FAQ9



http://www.dynamicpsp.com/!go?ln=nfaq&faq=FAQ9

TH [email protected]

How Do I Load Data?

Let Me Count The Ways

Questions ?

TH [email protected]

Thank You

How Do I Load Data?

Let Me Count The Ways

Date post:	16-Mar-2018
Category:	Documents
Upload:	duongdang
View:	216 times
Download:	2 times