Timezone handling discrepancies in MongoDB ------------------------------------------ Key: TEIID-5376 URL: https://issues.jboss.org/browse/TEIID-5376 Project: Teiid Issue Type: Bug Components: Misc. Connectors Reporter: Jan Martiska Assignee: Steven Hawkins Suppose this query against a MongoDB-backed VDB and you're running it in timezone UTC+1: {noformat} SELECT timestampvalue, HOUR(timestampvalue) AS TheHour FROM BQT1.SmallA WHERE (HOUR(timestampvalue) = 16); {noformat} If the database contains a timestamp '2000-01-01 16:00:00', you will get this row as result: ||timestampvalue||TheHour|| |2000-01-01 17:00:00|16| Looks like this is because the {{timestampvalue}} column is fully evaluated by Teiid and converted into the user's timezone, but the {{hour()}} call is pushed and evaluated by MongoDB and therefore evaluated as UTC and is not converted by Teiid to user's timezone.