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Diffstat (limited to 'activerecord/CHANGELOG.md')
| -rw-r--r-- | activerecord/CHANGELOG.md | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/activerecord/CHANGELOG.md b/activerecord/CHANGELOG.md index b59c9b4635..50a0b291b3 100644 --- a/activerecord/CHANGELOG.md +++ b/activerecord/CHANGELOG.md @@ -1,3 +1,17 @@ +* `ActiveRecord::Relation#reverse_order` throws `ActiveRecord::IrreversibleOrderError` + when the order can not be reversed using current trivial algorithm. + Also raises the same error when `#reverse_order` is called on + relation without any order and table has no primary key: + + Topic.order("concat(author_name, title)").reverse_order + # Before: SELECT `topics`.* FROM `topics` ORDER BY concat(author_name DESC, title) DESC + # After: raises ActiveRecord::IrreversibleOrderError + Edge.all.reverse_order + # Before: SELECT `edges`.* FROM `edges` ORDER BY `edges`.`` DESC + # After: raises ActiveRecord::IrreversibleOrderError + + *Bogdan Gusiev* + * Improve schema_migrations insertion performance by inserting all versions in one INSERT SQL. |