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[jira] [Created] (FLINK-9696) Deep toString for arrays/map in SQL client


Sergey Nuyanzin created FLINK-9696:
--------------------------------------

             Summary: Deep toString for arrays/map in SQL client 
                 Key: FLINK-9696
                 URL: https://issues.apache.org/jira/browse/FLINK-9696
             Project: Flink
          Issue Type: Bug
            Reporter: Sergey Nuyanzin
            Assignee: Sergey Nuyanzin


Currently SQL client does not show arrays/map in human readable way (please have a look at examples below). e.g. {code}select map[1,2];{code} is shown as {noformat} +/-                    EXPR$0
   +         java.util.HashMap
{noformat}
{code}select array[1,2];{code} is shown as {noformat}
+/-                    EXPR$0
   +       java.lang.Integer[]
{noformat} 
{code}select array[map[1,2],map[2,2]];{code} is shown as {noformat} +/-                    EXPR$0
   +           java.util.Map[]{noformat}
{code}select map[array[1,2], array[1,2]];{code} is shown as {noformat} +/-                    EXPR$0
   +         java.util.HashMap{noformat}




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