Post on 20-Jan-2015
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Copyright © 2012 Apex Evangelists http://apex-evangelists.com
Pump up the Volume!The APEX Data Loader Inside Out
Roel Hartman
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About Roel
• Director of APEX Evangelists NL
• 20+ years of Oracle Experience
• “RoelH” in the APEX Forum
• Presenter at KSCOPE, OOW, Collaborate, DOAG, UKOUG, ...
•Oracle ACE Director
• Blog @ http://roelhartman.blogspot.com
• Twitter : @RoelH
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A Small Ad...
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How To Get Data Into The Database?
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DBA Developer End UserETL Tools
Data PumpSQL Loader
External TablesUTL_FILE
XLS UploadFile Upload
Data Load WizardWebsheets
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Data Load Wizard - Wizard
• Plain Insert
• Tweak User Experience
• Add Lookups
• Add Transformations
• Add Concurrency
• Under the Covers
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DEMONSTRATION
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Plain Insert
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DEMONSTRATION
Copyright © 2012 Apex Evangelistshttp://apex-evangelists.com
Tweak user experience
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DEMONSTRATION
Copyright © 2012 Apex Evangelistshttp://apex-evangelists.com
Add lookups
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So “Insert New Value” only works with auto generated keys!(it does insert a record with ST = NULL...)
So you have to manage that using triggers...
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DEMONSTRATION
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Add transformations
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Only columns that are uploaded can be transformed...
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DEMONSTRATION
Copyright © 2012 Apex Evangelistshttp://apex-evangelists.com
Add concurrency
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Does NOT work when you update the UK (First/Last Name) -> will do an insert
(or when you delete the record -> will do an insert)
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Under the covers
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Collections Used
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• After “Data Load Source”
• CLOB_CONTENT
• PARSE_COL_HEAD
• SPREADSHEET_CONTENT
• After “Data / Table Mapping”
• LOAD_COL_HEAD
• LOAD_CONTENT
• NOT_LOAD_CONTENT
• After “Data Validation”
• FIN_LOAD_CONTENT
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One-to-many Mapping
• Sales sheet
• Customers
• Products
• Orders
• Order Items
• Use view + Instead of Triggers
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Conclusions
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Conclusions
• Data Load Wizard - Wizard is easy to use for an APEX Developer
• Data Load Wizard is easy to use for an End User
• Data Load Wizard is for 1:1 mappings to Tables
• Table Lookups + Manage Concurrency are nice features
• Easy Transformation Rules are ... easy
• Complex Transformation Rules are ... complex & limited
• Better use View with Instead Of Triggers
• Supports one-to-many mapping
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Q & A 42
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roel@apex-evangelists.comhttp://apex-evangelists.com
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