[jira] [Created] (CALCITE-4698) Return type of timestampadd(..., ..., timestamp_ltz) should be timestamp_ltz instead of timestamp

[Caizhi Weng (Jira)]

Caizhi Weng created CALCITE-4698:
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             Summary: Return type of timestampadd(..., ..., timestamp_ltz) 
should be timestamp_ltz instead of timestamp
                 Key: CALCITE-4698
                 URL: https://issues.apache.org/jira/browse/CALCITE-4698
             Project: Calcite
          Issue Type: Bug
          Components: core
            Reporter: Caizhi Weng


Currently {{SqlTimestampAddFunction#deduceType}} does not deal with 
timestamp_ltz type correctly. Return type of {{timestampadd(..., ..., 
timestamp_ltz)}} will be timestamp but it should be timestamp_ltz.



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