Maksim Zhuravkov created CALCITE-5794:
-----------------------------------------
Summary: Constant folding of CAST(literal AS decimal_type) ignores
scale parameter of a target type
Key: CALCITE-5794
URL: https://issues.apache.org/jira/browse/CALCITE-5794
Project: Calcite
Issue Type: Bug
Components: core
Reporter: Maksim Zhuravkov
Consider the following expression `CAST(100.00 AS DECIMAL(4,1))` it should
transform `100.00` to `100.0`. But constant folding optimization removes a cast
and the whole expression is replaced with `100.00` literal which is not correct.
*Reproducer*:
{code:java}
// SqlToRelConverterTest
@Test void testCastLiteralToDecimal() {
final String sql = "SELECT CAST(100.00 AS DECIMAL(4,1))";
sql(sql).ok();
}
{code}
Produces this plan:
{code:java}
LogicalValues(tuples=[[{ 100.00 }]])
{code}
*Expected behavior*: Cast is not removed/cast expression is replaced with
correct literal.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
