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https://issues.apache.org/jira/browse/CALCITE-6755?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ZheHu resolved CALCITE-6755.
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Resolution: Not A Bug
> Add SUBSTRING function(enabled in MSSQL library)
> ------------------------------------------------
>
> Key: CALCITE-6755
> URL: https://issues.apache.org/jira/browse/CALCITE-6755
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Affects Versions: 1.38.0
> Reporter: ZheHu
> Assignee: ZheHu
> Priority: Minor
>
> SUBSTRING function in SQL Server behaves almost like what in Calcite.
> The only slight difference is the number of arguments. For example, the
> following expression will throw "The substring function requires 3
> argument(s)." in SQL Server, but succeed in Calcite, which means
> substringLength argument is required for SQL Server.
> {code:java}
> SELECT substring('abcdef', 1)
> {code}
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