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https://issues.apache.org/jira/browse/CALCITE-2965?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16809384#comment-16809384
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Julian Hyde commented on CALCITE-2965:
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Yes, I think a common operator table would make sense. Perhaps annotations
against the functions defined in that table that indicate which
conformances/dialects/flavors they appear in.
Note that generic code (e.g. validator, and planner rules) should not reference
members of this table. Generic code should only refer to operators in
SqlStdOperatorTable (e.g. SqlStdOperatorTable.AND is referenced in many places).
The behavior of non-standard operators should be defined by the operators
themselves.
> Implement string functions: REPEAT, SPACE, SOUNDEX, DIFFERENCE
> --------------------------------------------------------------
>
> Key: CALCITE-2965
> URL: https://issues.apache.org/jira/browse/CALCITE-2965
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.19.0
> Reporter: Chunwei Lei
> Assignee: Chunwei Lei
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.20.0
>
> Time Spent: 1h 40m
> Remaining Estimate: 0h
>
> Some string functions including REPEAT, SPACE, SOUNDEX, DIFFERENCE are not
> implemented now. It would be great if these functions can be implemented.
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