Danny Chen created CALCITE-4282:
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Summary: Promote the window table functions window attribute data
type with precision 3
Key: CALCITE-4282
URL: https://issues.apache.org/jira/browse/CALCITE-4282
Project: Calcite
Issue Type: Bug
Components: core
Affects Versions: 1.25.0
Reporter: Danny Chen
Assignee: Danny Chen
Fix For: 1.26.0
Now the {{window_start}} and {{window_end}} has a type of a Timestamp with
default system precision. But, actually, many DB vendors has default precision
as 6 (which is also defined in the SQL standard).
We better promote the precision to 3 because:
1. For windowing, time unit as millisecond is enough
2. Make the precision deterministic instead of overriding by each engine's
default one
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