[GitHub] spark issue #21826: [SPARK-24872] Replace the symbol '||' of Or operator wit...

[httfighter <gi...@git.apache.org>]

Github user httfighter commented on the issue:

    https://github.com/apache/spark/pull/21826
  
    I have submitted a new code. Could you help me review the code? Thank you! @HyukjinKwon @viirya @gatorsmile @rxin @hvanhovell
    In Hive, "||" performs the function of STRING concat, the symbol of "Or" operator is 'or'
    hive> explain select * from aa where id=1 or id=2;
    and its Filter part is
     predicate: ((id = 1) or (id = 2)) (type: boolean) 
    In Spark, "||" also performs  the function of STRING concat. We can change the symbol of "Or" operator to 'or'.
    spark-sql> explain extended select * from aa where id=1 or id=2;
    | == Parsed Logical Plan ==
    'Project [*]
    +- 'Filter (('id = 1) or ('id = 2))
       +- 'UnresolvedRelation `aa`



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