[GitHub] spark pull request #18477: [SPARK-21261][DOCS]SQL Regex document fix

[gatorsmile]

Github user gatorsmile commented on a diff in the pull request:

    https://github.com/apache/spark/pull/18477#discussion_r146653604
  
    --- Diff: 
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/regexpExpressions.scala
 ---
    @@ -268,7 +268,10 @@ case class StringSplit(str: Expression, pattern: 
Expression)
       usage = "_FUNC_(str, regexp, rep) - Replaces all substrings of `str` 
that match `regexp` with `rep`.",
       extended = """
         Examples:
    -      > SELECT _FUNC_('100-200', '(\d+)', 'num');
    +      spark-sql> SELECT _FUNC_('100-200', '(\\d+)', 'num');
    +       num-num
    +
    +      scala> SELECT _FUNC_('100-200', '(\\\\d+)', 'num');
            num-num
    --- End diff --
    
    > scala> spark.sql("SELECT regexp_replace('100-200', '(\\\\d+)', 
'num')").collect()
    > Array([num-num])



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