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https://issues.apache.org/jira/browse/CALCITE-420?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15812660#comment-15812660
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Julian Hyde commented on CALCITE-420:
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[~rictomm], The PR looks good as far as it goes. Can you please also update
REFERENCE.md and add tests; see CALCITE-1557's additions to SqlOperatorBaseTest.
> Add REPLACE character string function
> -------------------------------------
>
> Key: CALCITE-420
> URL: https://issues.apache.org/jira/browse/CALCITE-420
> Project: Calcite
> Issue Type: Bug
> Reporter: Julian Hyde
> Assignee: Julian Hyde
> Labels: newbie
>
> Oracle and MSSQL have a REPLACE function (see
> http://docs.oracle.com/cd/B19306_01/server.102/b14200/functions134.htm). It
> is not in the SQL standard, and in fact the standard has no equivalent
> function.
> Syntax:
> {code:sql}
> REPLACE(char, search_string [, replace_string])
> {code}
> REPLACE is not a reserved word. Therefore the implementation will need to add
> REPLACE to CommonNonReservedKeyWord() in the parser.
> Note that Drill and potentially other users of Optiq use REPLACE as part of
> CREATE OR REPLACE syntax. Careful not to break that.
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