Hongze Zhang created CALCITE-2530:
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Summary: Reasonable behavior of TRIM function when the length of
trim character is not 1(one)
Key: CALCITE-2530
URL: https://issues.apache.org/jira/browse/CALCITE-2530
Project: Calcite
Issue Type: Improvement
Components: core
Reporter: Hongze Zhang
Assignee: Julian Hyde
Calcite's TRIM function takes the first character of <trim character> string to
trim the <trim source>, whereas SQL standard suggests to report a "trim error"
when the length of <trim character> is not 1.
I am not sure if this could be treated as an issue(since the calcite's way
might has better availability), until I found this:
[https://issues.apache.org/jira/browse/BEAM-4704|https://issues.apache.org/jira/browse/BEAM-4704]
It seems user could be sometimes confused with the behavior of TRIM function.
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