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| author | Ryuta Kamizono <kamipo@gmail.com> | 2015-11-11 23:05:44 +0900 |
|---|---|---|
| committer | Ryuta Kamizono <kamipo@gmail.com> | 2015-12-23 22:47:44 +0900 |
| commit | d0be40cad168aae558eeb6a9b12acd8d113e3fc9 (patch) | |
| tree | 305e28e84cb46b6b8993b317ad3b2dc77d13bca4 /activerecord/test/cases/migrator_test.rb | |
| parent | 9c5732d23447a2880dafc7f80254b1c9e42863f8 (diff) | |
| download | rails-d0be40cad168aae558eeb6a9b12acd8d113e3fc9.tar.gz rails-d0be40cad168aae558eeb6a9b12acd8d113e3fc9.tar.bz2 rails-d0be40cad168aae558eeb6a9b12acd8d113e3fc9.zip | |
Add `columns_for_distinct` for MySQL 5.7 with ONLY_FULL_GROUP_BY
In MySQL 5.7.5 and up, ONLY_FULL_GROUP_BY affects handling of queries
that use DISTINCT and ORDER BY. It requires the ORDER BY columns in the
select list for distinct queries, and requires that the ORDER BY include
the distinct column.
See https://dev.mysql.com/doc/refman/5.7/en/group-by-handling.html
Diffstat (limited to 'activerecord/test/cases/migrator_test.rb')
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