Jeremy Karn created PIG-3936:
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             Summary: DBStorage fails on storing nulls for non varchar columns
                 Key: PIG-3936
                 URL: https://issues.apache.org/jira/browse/PIG-3936
             Project: Pig
          Issue Type: Bug
          Components: piggybank
            Reporter: Jeremy Karn


When trying to store a null value into an integer column in Postgres we were 
getting a JDBC error on the insert statement.  I tracked it down to always 
using varchar as the type when writing nulls in Pig.  

To fix the issue I use the schema (if present) to determine the type of the 
field with the null value.  



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