[teiid-issues] [JBoss JIRA] (TEIID-4685) PrestoDB translator - IFNULL 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: Misc. Connectors Affects Versions: 8.12.8.6_3 Reporter: Juraj Duráni Assignee: Steven Hawkins Fix For: 9.2, 9.1.3 Teiid translates *NULLIF* function to *nullif*. However, those functions have different functionality. Note, this is the case for *COALESCE* with two arguments as well as that function is rewritten to *IFNULL*. See [PrestoDB doc|https://prestodb.io/docs/current/functions/conditional.html] {code:sql|title=Query} SELECT IFNULL(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}