[jira] [Created] (IGNITE-19822) Sql. CAST(literal AS decimal_type) is reduced to literal when type(lateral).scale != decimal_type.scale

[Maksim Zhuravkov (Jira)]

Maksim Zhuravkov created IGNITE-19822:
-----------------------------------------

             Summary: Sql. CAST(literal AS decimal_type) is reduced to literal 
when type(lateral).scale != decimal_type.scale
                 Key: IGNITE-19822
                 URL: https://issues.apache.org/jira/browse/IGNITE-19822
             Project: Ignite
          Issue Type: Bug
          Components: sql
    Affects Versions: 3.0.0-beta2
            Reporter: Maksim Zhuravkov


RexSimplify/RexBuilder ignores type.scale when it considers whether to remove a 
cast from a literal or not:
{code:java}
 @Test
    public void testCastLit() {
        assertQuery("SELECT CAST(100.00 AS DECIMAL(4,1))").returns(new 
BigDecimal("100.0")).check();
    }
{code}

*Result*:

{code:java}
org.opentest4j.AssertionFailedError: Collections are not equal (position 0):
Expected: 100.0 <class java.math.BigDecimal>
Actual:   100.00 <class java.math.BigDecimal>
{code}





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