On Thursday, 1 May 2014 at 18:35:40 UTC, Jacob Carlborg wrote:
On 2014-05-01 15:54, "Marc Schütz" <schue...@gmx.net>" wrote:
You can also use the built-in `includes()`, which does a LEFT
OUTER JOIN:
Post.includes(:comments).where(comments: {title: "bar"})
(It also eager-loads the comments, but this is usually desired
anyway,
because an OUTER JOIN doesn't make sense if you're not going
to use the
joined records.)
The SQL code "includes" generates is unspecified. Sometimes it
can do an extra "select" instead of a "join".
You're probably right. I thought that changed in a recent
release, but can't find it anymore.
