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https://issues.apache.org/jira/browse/CALCITE-6774?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ZheHu updated CALCITE-6774:
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Summary: REPLACE function returns wrong result when search pattern is an
empty string (was: REPLACE function returns wrong result when search pattern
is empty string)
> REPLACE function returns wrong result when search pattern is an empty string
> ----------------------------------------------------------------------------
>
> Key: CALCITE-6774
> URL: https://issues.apache.org/jira/browse/CALCITE-6774
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.38.0
> Reporter: ZheHu
> Assignee: ZheHu
> Priority: Major
>
> Run the following test in SqlOperatorTest:
> {code:java}
> f.checkString("REPLACE('ciao', '', 'ciao')", "ciao", "VARCHAR NOT NULL");
> {code}
> we will get "ciaocciaoiciaoaciaoociao", however the right result should be
> "ciao".
> Replace function should return unchanged string when search is an empty
> string ('').
> {code:java}
> REPLACE(string, search, replace)
> {code}
> I've tested this behavior in Oracle, PostgreSQL and SQL Server.
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