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| author | Martin Schùˆrrer <martin@schuerrer.org> | 2014-03-03 17:44:55 +0100 |
|---|---|---|
| committer | Martin Schùˆrrer <martin@schuerrer.org> | 2014-03-04 10:05:30 +0100 |
| commit | f317cc8bc007978d7b135ddd1acdd7e3d1e582a3 (patch) | |
| tree | 26894ebe8a7d684799fd3397b861db769e3f877b /activerecord/lib/active_record/relation.rb | |
| parent | ffcc6172b4d40ca7c8b02fd298c679b5bcf5787b (diff) | |
| download | rails-f317cc8bc007978d7b135ddd1acdd7e3d1e582a3.tar.gz rails-f317cc8bc007978d7b135ddd1acdd7e3d1e582a3.tar.bz2 rails-f317cc8bc007978d7b135ddd1acdd7e3d1e582a3.zip | |
Make exists? use bound values.
When we build a query with an inline value that is a numeric (e.g.
because it's out of range for an int4) PostgreSQL doesn't use an index
on the column, since it's now comparing numerics and not int4s.
This leads to a _very_ slow query.
When we use bound parameters instead of inline values PostgreSQL
raises numeric_value_out_of_range since no automatic coercion happens.
Diffstat (limited to 'activerecord/lib/active_record/relation.rb')
0 files changed, 0 insertions, 0 deletions