[CALCITE-3489] Cast to interval is ignored

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 1.21.0
• Component/s: core
• Labels: correctness datetime
• Assignee: Unassigned
• Reporter: Jess Balint
• Created: 09/Nov/19 23:32
• Updated: 24/Mar/20 16:26

Description

when adding day to timestamp, the day interval is not converted to ms, in the generated code I see "-2208944806000L + 2L;" where 2 is the number of days. same for hour/minute/second. the return value is the original timestamp (at least when represented as a string, perhaps the two ms are added to it)

the query I was using is more like timestamp '2014-02-11 00:00:00' + cast('1' as interval day) (I have a custom convertlet creating this expression). the CAST here is creating an interval value, but we expect it to be processed as in SqlToRexNodeConverterImpl (which turns it into milliseconds)