Hi,
I wanted to understand why hive has a performance issue with using _
character in queries.
For eg

   - select object from  table where object like '*%SR_311%*' and
   date='2017-11-23' t*akes hours*

Same query (modified) completes in < 5 mins

   - select object from table  where object like '*%311%*' and
   date='2017-11-23'

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