Dmitry Sysolyatin created CALCITE-5297:
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Summary: Casting dynamic variable twice throws exception
Key: CALCITE-5297
URL: https://issues.apache.org/jira/browse/CALCITE-5297
Project: Calcite
Issue Type: Bug
Components: core
Reporter: Dmitry Sysolyatin
Executing of {code}SELECT CAST(CAST(? AS INTEGER) AS CHAR){code} query throws
exception:
{code}
Conversion to relational algebra failed to preserve datatypes:
validated type:
RecordType(CHAR(1) NOT NULL EXPR$0) NOT NULL
converted type:
RecordType(CHAR(1) EXPR$0) NOT NULL
rel:
LogicalProject(EXPR$0=[CAST(?0):CHAR(1)])
LogicalValues(tuples=[[{ 0 }]])
{code}
Testcase -
https://github.com/apache/calcite/commit/4e32d2997b80effda66d46af06ec376b44856ead
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