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| author | Akira Matsuda <ronnie@dio.jp> | 2011-05-18 18:01:01 +0900 |
|---|---|---|
| committer | Akira Matsuda <ronnie@dio.jp> | 2011-05-18 18:50:33 +0900 |
| commit | a61556387af8b52386f1f3319e5f93b5385d78df (patch) | |
| tree | 21b0214b09c19853a3d9925614a5e771f8fd3e2a | |
| parent | 2692d3278a7b15699491f8c86b4180eaad9ce196 (diff) | |
| download | rails-a61556387af8b52386f1f3319e5f93b5385d78df.tar.gz rails-a61556387af8b52386f1f3319e5f93b5385d78df.tar.bz2 rails-a61556387af8b52386f1f3319e5f93b5385d78df.zip | |
why not use JOIN statement for joining tables?
| -rw-r--r-- | activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb b/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb index f4beeceb61..8cb01a834f 100644 --- a/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb +++ b/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb @@ -701,11 +701,11 @@ module ActiveRecord schemas = schema_search_path.split(/,/).map { |p| quote(p) }.join(',') result = query(<<-SQL, name) SELECT distinct i.relname, d.indisunique, d.indkey, t.oid - FROM pg_class t, pg_class i, pg_index d + FROM pg_class t + INNER JOIN pg_index d ON t.oid = d.indrelid + INNER JOIN pg_class i ON d.indexrelid = i.oid WHERE i.relkind = 'i' - AND d.indexrelid = i.oid AND d.indisprimary = 'f' - AND t.oid = d.indrelid AND t.relname = '#{table_name}' AND i.relnamespace IN (SELECT oid FROM pg_namespace WHERE nspname IN (#{schemas}) ) ORDER BY i.relname |