cloud-fan commented on code in PR #37154:
URL: https://github.com/apache/spark/pull/37154#discussion_r918719734
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/regexpExpressions.scala:
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@@ -1043,3 +1043,89 @@ case class RegExpSubStr(left: Expression, right:
Expression)
newChildren: IndexedSeq[Expression]): RegExpSubStr =
copy(left = newChildren(0), right = newChildren(1))
}
+
+// scalastyle:off line.size.limit
+@ExpressionDescription(
+ usage = """
+ _FUNC_(str, regexp) - Searches a string for a regular expression and
returns an integer that indicates the beginning position matched substring.
Positions are 1-based, not 0-based. If no match is found, returns 0.
Review Comment:
```suggestion
_FUNC_(str, regexp) - Searches a string for a regular expression and
returns an integer that indicates the beginning position of the matched
substring. Positions are 1-based, not 0-based. If no match is found, returns 0.
```
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