[teiid-issues] [JBoss JIRA] (TEIID-4685) PrestoDB translator - IFNULL is translated as NULLIF

[Juraj Duráni (JIRA)]

     [ https://issues.jboss.org/browse/TEIID-4685?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Juraj Duráni updated TEIID-4685:
--------------------------------
    Summary: PrestoDB translator - IFNULL is translated as NULLIF  (was: PrestoDB translator - COALESCE is translated as NULLIF)


> PrestoDB translator - IFNULL is translated as NULLIF
> ----------------------------------------------------
>
>                 Key: TEIID-4685
>                 URL: https://issues.jboss.org/browse/TEIID-4685
>             Project: Teiid
>          Issue Type: Bug
>          Components: Query Engine
>    Affects Versions: 8.12.8.6_3
>            Reporter: Juraj Duráni
>            Assignee: Steven Hawkins
>
> Teiid translates *COALESCE* function to *nullif*. However, those functions have different functionality. PrestoDB contains *coalesce* function. Please correct the function alias.
> {code:sql|title=Query}
> SELECT COALESCE(intnum, intkey) FROM BQT1.SmallA
> {code}
> {code:sql|title=Source command}
> SELECT nullif(g_0.intnum, g_0.intkey) FROM smalla AS g_0
> {code}



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