Steven Talbot created CALCITE-3475:
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Summary: BigQuery SQL dialect unparseCall override broken for
UNION ALL
Key: CALCITE-3475
URL: https://issues.apache.org/jira/browse/CALCITE-3475
Project: Calcite
Issue Type: Bug
Reporter: Steven Talbot
The break on line
[https://github.com/apache/calcite/blob/ff43dcb95caa251e5fc8120980fc70c8fea8ac40/core/src/main/java/org/apache/calcite/sql/dialect/BigQuerySqlDialect.java#L134]
should be inside the if. Otherwise, UNION ALL does not trigger the if, hits
the `break`, and then nothing is unparsed at all!
>From looking at the code, INTERSECT and EXCEPT would seem to have the same
>problem, except per BQ syntax specification at
>[https://cloud.google.com/bigquery/docs/reference/standard-sql/query-syntax#set-operators],
> the "ALL" is not supported with either of those, so it may not matter (but
>the code may want to explicitly blow up, saying that those aren't supported?)
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