kishendas opened a new pull request #1443:
URL: https://github.com/apache/hive/pull/1443


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   ### What changes were proposed in this pull request?
   Implement below JDBC methods 
   nullsAreSortedAtEnd
   nullsAreSortedAtStart
   nullsAreSortedLow
   nullsAreSortedHigh
   storesLowerCaseIdentifiers
   storesLowerCaseQuotedIdentifiers
   storesMixedCaseIdentifiers
   storesMixedCaseQuotedIdentifiers
   storesUpperCaseIdentifiers
   storesUpperCaseQuotedIdentifiers
   supportsMixedCaseIdentifiers
   supportsMixedCaseQuotedIdentifiers
   
   
   ### Why are the changes needed?
   Calcite may rely on the following JDBC methods to generate SQL queries for 
Hive JDBC storage handler, which in the case of Hive itself, return a Method 
not supported exception. We should implement such methods, as listed below. 
   nullsAreSortedAtEnd
   nullsAreSortedAtStart
   nullsAreSortedLow
   nullsAreSortedHigh
   storesLowerCaseIdentifiers
   storesLowerCaseQuotedIdentifiers
   storesMixedCaseIdentifiers
   storesMixedCaseQuotedIdentifiers
   storesUpperCaseIdentifiers
   storesUpperCaseQuotedIdentifiers
   supportsMixedCaseIdentifiers
   supportsMixedCaseQuotedIdentifiers
   
   
   ### Does this PR introduce _any_ user-facing change?
   No
   
   
   ### How was this patch tested?
   This change relies on existing tests.
   


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