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Posted to issues@impala.apache.org by "Taras Bobrovytsky (JIRA)" <ji...@apache.org> on 2018/01/17 01:54:02 UTC

[jira] [Created] (IMPALA-6405) There is no error under Decimal v2 when there is an overflow when casting String to Decimal

Taras Bobrovytsky created IMPALA-6405:
-----------------------------------------

             Summary: There is no error under Decimal v2 when there is an overflow when casting String to Decimal
                 Key: IMPALA-6405
                 URL: https://issues.apache.org/jira/browse/IMPALA-6405
             Project: IMPALA
          Issue Type: Bug
          Components: Backend
    Affects Versions: Impala 2.11.0
            Reporter: Taras Bobrovytsky


The following query correctly returns an error when Decimal v2 is enabled:
{code:java}
select cast(123 as decimal(2, 0));
ERROR: UDF ERROR: Decimal expression overflowed
{code}

However, this query incorrectly returns a NULL:
{code}
select cast("123" as decimal(2, 0))
+-----------------------------+
| cast('123' as decimal(2,0)) |
+-----------------------------+
| NULL                        |
+-----------------------------+
{code}



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