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From "Jeremy Boynes (JIRA)" <derby-...@db.apache.org>
Subject [jira] Created: (DERBY-113) Comparison does not perform implicit type conversion
Date Tue, 28 Dec 2004 18:29:04 GMT
Comparison does not perform implicit type conversion
----------------------------------------------------

         Key: DERBY-113
         URL: http://nagoya.apache.org/jira/browse/DERBY-113
     Project: Derby
        Type: Bug
  Components: SQL  
    Reporter: Jeremy Boynes


The operands to a comparision operator are not implictly converted to the dominant type resulting
in an unexpected exception:

For example:

ij> select * from dual where '1' = 1;
ERROR 42818: Comparisons between 'CHAR' and 'INTEGER' are not supported.

fails whereas

ij> select * from dual where cast('1' as int) = 1;
DUM&
----
X

works. The type escalation should be implicit.

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