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https://issues.apache.org/jira/browse/SPARK-27952?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Takeshi Yamamuro updated SPARK-27952:
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Parent Issue: SPARK-30375 (was: SPARK-27764)
> String Functions: regexp_replace is not compatible
> --------------------------------------------------
>
> Key: SPARK-27952
> URL: https://issues.apache.org/jira/browse/SPARK-27952
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Zhu, Lipeng
> Priority: Major
>
> PostgreSQL's {{regexp_replace}} has the syntax: {{regexp_replace(source,
> pattern, replacement [, flags ])}}. This is not compatible with our syntax
> {{regexp_replace(str, regexp, rep)}}. The _*flags*_ parameter is an optional
> text string containing zero or more single-letter flags that change the
> function's behavior. Flag {{i}} specifies case-insensitive matching, while
> flag g specifies replacement of each matching substring rather than only the
> first one. Some examples:
> {noformat}
> regexp_replace('foobarbaz', 'b..', 'X')
> fooXbaz
> regexp_replace('foobarbaz', 'b..', 'X', 'g')
> fooXX
> regexp_replace('foobarbaz', 'b(..)', 'X\1Y', 'g')
> fooXarYXazY
> {noformat}
> More details:
> https://www.postgresql.org/docs/11/functions-matching.html#FUNCTIONS-POSIX-REGEXP
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