Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/18047#discussion_r118844950
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/stringExpressions.scala
---
@@ -340,6 +340,42 @@ case class EndsWith(left: Expression, right:
Expression) extends StringPredicate
}
}
+/**
+ * Replace all occurrences with string.
+ */
+// scalastyle:off line.size.limit
+@ExpressionDescription(
+ usage = "_FUNC_(str, sear[, rep]) - Replaces all occurrences of `sear`
with `rep`.",
+ extended = """
--- End diff --
```
Arguments:
str - a string expression.
search - a string expression. If `search` is not found in `str`,
source-string is returned unchanged.
replace - a string expression. If `replace` is not specified or is an
empty string, nothing replaces
the string that is removed from `str`.
```
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