Cannot use functions in group by queries

[wedi-dev]

Because of quotes in this code cannot use functions e.g. domain(sessionURL) in group by

infi.clickhouse_orm/src/infi/clickhouse_orm/query.py

Line 390 in ebdadb3

sql += '\nGROUP BY %s' % comma_join('`%s`' % field for field in self._grouping_fields)

Resulting query fails:

SELECT domain(sessionURL) FROM `table`
GROUP BY `domain(sessionURL)` 
ORDER BY domain(sessionURL)

With error:

Missing columns: 'domain(sessionURL)'

Dropping quotes in group by fixes the problem.

[ishirav]

Thank you for the bug report!