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https://issues.apache.org/jira/browse/SPARK-33677?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Lu Lu updated SPARK-33677:
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Description:
LikeSimplification rule does not work correctly for many cases that have
patterns containing escape characters:
{code:sql}
SELECT s LIKE 'm%aca' ESCAPE '%' from t;
SELECT s LIKE 'maacaa' ESCAPE 'a' FROM t;
{code}
was:
Spark SQL should throw exceptions when pattern string is invalid:
{code:sql}
SELECT a LIKE 'm%aca' ESCAPE '%' from t;
{code}
> LikeSimplification should be skipped if escape is a wildcard character
> ----------------------------------------------------------------------
>
> Key: SPARK-33677
> URL: https://issues.apache.org/jira/browse/SPARK-33677
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 3.1.0
> Reporter: Lu Lu
> Assignee: Lu Lu
> Priority: Major
>
> LikeSimplification rule does not work correctly for many cases that have
> patterns containing escape characters:
> {code:sql}
> SELECT s LIKE 'm%aca' ESCAPE '%' from t;
> SELECT s LIKE 'maacaa' ESCAPE 'a' FROM t;
> {code}
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