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From 10110346 <...@git.apache.org>
Subject [GitHub] spark pull request #18228: [SPARK-21007][SQL]Add SQL function - RIGHT && LEF...
Date Mon, 10 Jul 2017 06:15:05 GMT
Github user 10110346 commented on a diff in the pull request:

    https://github.com/apache/spark/pull/18228#discussion_r126341299
  
    --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/stringExpressions.scala
---
    @@ -1199,6 +1199,82 @@ case class Substring(str: Expression, pos: Expression, len: Expression)
     }
     
     /**
    + * Returns the rightmost n characters from the string.
    + */
    +@ExpressionDescription(
    +  usage = "_FUNC_(str, len) - Returns the rightmost `len` characters from the string
`str`.",
    +  extended = """
    +    Examples:
    +      > SELECT _FUNC_('Spark SQL', 3);
    +       SQL
    +  """)
    +case class Right(str: Expression, len: Expression)
    +  extends BinaryExpression with ImplicitCastInputTypes with NullIntolerant {
    --- End diff --
    
    ok,i will do,thanks


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