diff options
| author | Stefan Kanev <stefan.kanev@gmail.com> | 2014-08-01 16:13:38 +0200 |
|---|---|---|
| committer | Ryuta Kamizono <kamipo@gmail.com> | 2015-01-19 13:40:13 +0900 |
| commit | 48e99a45310f5fec515305e90ff8ee2a6a61bada (patch) | |
| tree | fe3354e0de2cf67944349db3b94ac7a4136ae8ec /activerecord/CHANGELOG.md | |
| parent | 53919bbfd2b3232ec66e0cdea7b387725653ab43 (diff) | |
| download | rails-48e99a45310f5fec515305e90ff8ee2a6a61bada.tar.gz rails-48e99a45310f5fec515305e90ff8ee2a6a61bada.tar.bz2 rails-48e99a45310f5fec515305e90ff8ee2a6a61bada.zip | |
Add an `:if_exists` option to `drop_table`
If set to `if_exists: true`, it generates a statement like:
DROP TABLE IF EXISTS posts
This syntax is supported in the popular SQL servers, that is (at least)
SQLite, PostgreSQL, MySQL, Oracle and MS SQL Sever.
Closes #16366.
Diffstat (limited to 'activerecord/CHANGELOG.md')
| -rw-r--r-- | activerecord/CHANGELOG.md | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/activerecord/CHANGELOG.md b/activerecord/CHANGELOG.md index d8f29a77b4..faa0aecebb 100644 --- a/activerecord/CHANGELOG.md +++ b/activerecord/CHANGELOG.md @@ -1,3 +1,18 @@ +* Introduce the `:if_exists` option for `drop_table`. + + Example: + + drop_table(:posts, if_exists: true) + + That would execute: + + DROP TABLE IF EXISTS posts + + If the table doesn't exist, `if_exists: false` (the default) raises an + exception whereas `if_exists: true` does nothing. + + *Cody Cutrer*, *Stefan Kanev*, *Ryuta Kamizono* + * Don't run SQL if attribute value is not changed for update_attribute method. *Prathamesh Sonpatki* |