xiong duan created CALCITE-6560:
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Summary: Add supportsNegativeScale RelDataTypeSystem
Key: CALCITE-6560
URL: https://issues.apache.org/jira/browse/CALCITE-6560
Project: Calcite
Issue Type: Improvement
Reporter: xiong duan
[https://www.postgresql.org/docs/current/datatype-numeric.html]
According to the document, a numeric column with a negative scale can be
declared beginning in PostgreSQL 15. This PR will add some tests to cover
supportsNegativeScale is false and will throw an exception if set
supportsNegativeScale is true.
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