MaxGekk commented on code in PR #43203:
URL: https://github.com/apache/spark/pull/43203#discussion_r1346374515
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/regexpExpressions.scala:
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@@ -92,8 +92,9 @@ abstract class StringRegexExpression extends BinaryExpression
_ matches any one character in the input (similar to . in posix
regular expressions)\
% matches zero or more characters in the input (similar to .* in
posix regular
expressions)<br><br>
- Since Spark 2.0, string literals are unescaped in our SQL parser.
For example, in order
- to match "\abc", the pattern should be "\\abc".<br><br>
+ Since Spark 2.0, string literals are unescaped in our SQL parser,
see the unescaping
+ rules at <a
href="https://spark.apache.org/docs/latest/sql-ref-literals.html#string-literal";>String
Literal</a>.
+ For example, in order to match "\abc", the pattern should be
"\\abc".<br><br>
When SQL config 'spark.sql.parser.escapedStringLiterals' is enabled,
it falls back
Review Comment:
done
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