Dawid Wysakowicz created FLINK-16183:
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Summary: Make identifier parsing in Table API more lenient
Key: FLINK-16183
URL: https://issues.apache.org/jira/browse/FLINK-16183
Project: Flink
Issue Type: Improvement
Components: Table SQL / API
Reporter: Dawid Wysakowicz
Assignee: Dawid Wysakowicz
Fix For: 1.11.0
I suggest to make the parsing logic for identifiers in Table API more lenient.
We should not require users to escape any sql identifiers.
It will make the identifiers not cross compatible between Table API and SQL,
but it will improve user's experience and also will let us support parsing
identifiers coming from Java's ExpressionParser (e.g. for a string array(..) it
produces a lookup call with an "array" identifier which should be parsed)
I suggest doing it by extending the FlinkSqlParserImpl with a new logic for
TableApiSqlIdentifier which would be very similar to CompoundIdentifier with
slightly adjusted logic which would not discard reserved keywords.
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