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| author | Andrew White <pixeltrix@users.noreply.github.com> | 2019-03-01 08:33:01 +0000 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2019-03-01 08:33:01 +0000 |
| commit | 0c4bf982e80414a5437f18f988b63885359326e7 (patch) | |
| tree | 95188dab2ebdd238711f6abbb5403f5d7ef83e79 /guides | |
| parent | 8189abc1f23b78e4cad3857848a1333fd77eca37 (diff) | |
| parent | b217e6e7d318da6d9bfa52a6f68ca2b96bb9bd82 (diff) | |
| download | rails-0c4bf982e80414a5437f18f988b63885359326e7.tar.gz rails-0c4bf982e80414a5437f18f988b63885359326e7.tar.bz2 rails-0c4bf982e80414a5437f18f988b63885359326e7.zip | |
Merge pull request #33611 from willianveiga/feature/reselect-method
Add reselect method
Diffstat (limited to 'guides')
| -rw-r--r-- | guides/source/active_record_querying.md | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/guides/source/active_record_querying.md b/guides/source/active_record_querying.md index cb738f0657..270696d38d 100644 --- a/guides/source/active_record_querying.md +++ b/guides/source/active_record_querying.md @@ -807,6 +807,32 @@ SELECT * FROM articles WHERE id > 10 ORDER BY id DESC LIMIT 20 ``` +### `reselect` + +The `reselect` method overrides an existing select statement. For example: + +```ruby +Post.select(:title, :body).reselect(:created_at) +``` + +The SQL that would be executed: + +```sql +SELECT `posts.created_at` FROM `posts` +``` + +In case the `reselect` clause is not used, + +```ruby +Post.select(:title, :body) +``` + +the SQL executed would be: + +```sql +SELECT `posts.title`, `posts.body` FROM `posts` +``` + ### `reorder` The `reorder` method overrides the default scope order. For example: |