Zine eddine Zidane created CALCITE-5598:
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Summary: Expand expression in a GROUP BY clause returns wrong
result in case of expressions referenced by column index
Key: CALCITE-5598
URL: https://issues.apache.org/jira/browse/CALCITE-5598
Project: Calcite
Issue Type: Bug
Affects Versions: 1.34.0
Reporter: Zine eddine Zidane
Given the following BigQuery query:
{code:java}
SELECT CAST(user_id AS STRING) AS id, COUNT(*) FROM `users` GROUP BY 1 HAVING
COUNT (*)>1;{code}
SqlValidatorImpl extendedExpand method returns "CAST(user_id AS STRING)" for
expression “1” in the GROUP BY clause resulting in the following validated
query:
{code:java}
SELECT CAST(user_id AS STRING) AS id, COUNT(*) FROM `users` GROUP BY
CAST(user_id AS STRING) HAVING COUNT (*)>1;{code}
This query fails on BigQuery with the error:
{code:java}
SELECT list expression references user_id which is neither grouped nor
aggregated at [1:24] on source.{code}
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