[teiid-issues] [JBoss JIRA] (TEIID-5763) GENERATED_KEY returns NULL if used in INSTEAD OF INSERT Triggers in DDL files

[Steven Hawkins (Jira)]

     [ https://issues.jboss.org/browse/TEIID-5763?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Steven Hawkins updated TEIID-5763:
----------------------------------
    Fix Version/s: 12.3
         Priority: Critical  (was: Blocker)


Marking complete for issues highlighted as 1/3 - where 1 required a code change to always fetch generated keys, and 3 was largely a doc issue.  Also added a more convenient generated_keys function and updated the docs with that.

> GENERATED_KEY returns NULL if used in INSTEAD OF INSERT Triggers in DDL files
> -----------------------------------------------------------------------------
>
>                 Key: TEIID-5763
>                 URL: https://issues.jboss.org/browse/TEIID-5763
>             Project: Teiid
>          Issue Type: Bug
>    Affects Versions: 12.2
>            Reporter: Christoph John
>            Assignee: Steven Hawkins
>            Priority: Critical
>             Fix For: 12.3
>
>
> The issue arrised in:
> https://developer.jboss.org/message/989700#989700
> Following sceanarios are  given:
> Variant 1:
> Table Product(id), primary key = autoincrement;
> Table QuicklyAddedProduct, primary key is foreign key on Product.id
> Table Diary_SRC
> View Diary on Diary_SRC
> INSTEAD OF INSERT Trigger on Diary should :
> -create new record on Product, 
> -get autoincremented Product.id of new record,
> - create new QuicklyAddedProduct with returned Product.id as primary key
> - create new Diary record with QuicklyAddedProduct 
> {
>    INSERT a new record on Product;
>    idProduct = CONVERT(GENERATED_KEY('idProduct'),long); // fails
> }
> Variant 2:
> INSTEAD OF INSERT trigger on Diary should :
> - create new QuicklyAddedProduct 
> - add Quickly added prodcut to Diary
> additionally a INSTEAD OF trigger on QuicklyAddedProduct exists which:
> - creates new Product record
> - uses returned GENERATED_KEY(Product.id) to add record on QuicklyAddedProduct with Product.id as primary key



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