Feng Jin created FLINK-37064:
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Summary: Validate Schema Column Name Conflicts in Definition Query
During Materialized Table Creation or Alter Query
Key: FLINK-37064
URL: https://issues.apache.org/jira/browse/FLINK-37064
Project: Flink
Issue Type: Improvement
Components: Table SQL / Gateway
Reporter: Feng Jin
Fix For: 2.0.0
By default, when duplicate field names appear in the definition query, Calcite
automatically appends an index to the field names to prevent conflicts.
However, when generating a schema based on the query, we should explicitly
check for and handle field name conflicts instead of relying on Calcite’s
default behavior. This ensures that the resulting schema is consistent with
user expectations and avoids unintended naming patterns.
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