PostgreSQL: Fix GROUP BY with ORDER BY virtual count attribute #36506
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GROUP BY with virtual count attribute is invalid for almost all databases, but it is valid for PostgreSQL, and it had worked until Rails 5.2.2, so it is a regression for Rails 5.2.3 (caused by 311f001). I can't find perfectly solution for fixing this for now, but I would not like to break existing apps, so I decided to allow referencing virtual count attribute in ORDER BY clause when GROUP BY aggrigation (it partly revert the effect of 311f001) to fix the regression rails#36022. Fixes rails#36022.
kamipo
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Jun 17, 2019
…count_attribute PostgreSQL: Fix GROUP BY with ORDER BY virtual count attribute
kamipo
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Jun 17, 2019
…count_attribute PostgreSQL: Fix GROUP BY with ORDER BY virtual count attribute
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GROUP BY with virtual count attribute is invalid for almost all
databases, but it is valid for PostgreSQL, and it had worked until Rails
5.2.2, so it is a regression for Rails 5.2.3 (caused by 311f001).
I can't find perfectly solution for fixing this for now, but I would not
like to break existing apps, so I decided to allow referencing virtual
count attribute in ORDER BY clause when GROUP BY aggrigation (it partly
revert the effect of 311f001) to fix the regression #36022.
Fixes #36022.