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mybb / merge-system

The MyBB Merge System allows for easy merging of an existing forum (be it MyBB or another forum software) into a MyBB 1.8.x forum.
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GROUP BY issue #290

Open yuliu opened 2 years ago

yuliu commented 2 years ago

The error has been seen in phpBB users module:

1055 - Expression #2 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'XXX.u.user_type' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by

This affects MySQL with sql_mode only_full_group_by enabled, PostgresSQL and probably SQLite.