[teiid-issues] [JBoss JIRA] (TEIID-5763) GENERATED_KEY returns NULL if used in INSTEAD OF INSERT Triggers in DDL files
Steven Hawkins (Jira)
issues at jboss.org
Tue Jun 11 19:04:01 EDT 2019
[ https://issues.jboss.org/browse/TEIID-5763?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13745576#comment-13745576 ]
Steven Hawkins commented on TEIID-5763:
---------------------------------------
> Is there something I can debug to ensure that your fix is running as expected?
You can see the test, which almost exactly like what is described from the forum post: https://github.com/teiid/teiid/blob/8af79d55602ef3619d0d2b7afc405c1e0d089873/runtime/src/test/java/org/teiid/runtime/TestEmbeddedServer.java#L984
Before the fix, it would have returned null.
> Or might there be some driver configuration that I should check?
You can certainly debug the JDBCUpdateExecution to see if it's capturing the generated keys. Whether or not it attempts to get the keys will be determined in JDBCExecutionFactory.initCapabilities - it's expecting the driver to return true for DatabaseMetaData.supportsGetGeneratedKeys()
> 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: Blocker
>
> 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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