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| author | Aaron Patterson <aaron.patterson@gmail.com> | 2011-12-05 14:15:50 -0800 |
|---|---|---|
| committer | Aaron Patterson <aaron.patterson@gmail.com> | 2011-12-05 14:15:50 -0800 |
| commit | 988061ddb802e6803d19de954762753f14551c56 (patch) | |
| tree | 944f5f89444e74d3bd2032da492f09cc1f0991d3 | |
| parent | 38185f670e2dd4bb1ec9bf6e3397d7ad9da630ee (diff) | |
| parent | 73a331c2acfce971aa2dda8e72af5edc6867e344 (diff) | |
| download | rails-988061ddb802e6803d19de954762753f14551c56.tar.gz rails-988061ddb802e6803d19de954762753f14551c56.tar.bz2 rails-988061ddb802e6803d19de954762753f14551c56.zip | |
Merge pull request #3867 from jadeforrest/master
Increase performance for table_exists?
| -rw-r--r-- | activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb b/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb index ce4c5a1383..7ff3b755fd 100644 --- a/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb +++ b/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb @@ -23,7 +23,12 @@ module ActiveRecord # === Example # table_exists?(:developers) def table_exists?(table_name) - tables.include?(table_name.to_s) + begin + select_value("SELECT 1 FROM #{table_name.to_s} where 1=0") + true + rescue + false + end end # Returns an array of indexes for the given table. |