dzamo opened a new pull request #2393:
URL: https://github.com/apache/drill/pull/2393


   # [DRILL-8066](https://issues.apache.org/jira/browse/DRILL-8066): Convert 
non-finite floating point literals to string RexLiterals
   
   ## Description
   
   When we encounter floating point literals in a query we attempt to convert 
them to BigDecimal which can only handle finite floats. making queries like 
this fail: `select cast('-Infinity' as float);`.  This change sends non-finite 
floats to Strings.
   
   ## Documentation
   None.
   
   ## Testing
   New unit test: TestMathFunctionsWithNanInf#testNanInfLiteralConversion
   Manually run `select cast('-Infinity' as float);`
   


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