Merge commit 'refs/pull/2909/head' of https://github.com/rails/rails into rawr

* https://github.com/rails/rails:
  Postgresql adapter: added current_schema check for table_exists?
  Postgresql adapter: added current_schema check for table_exists?

activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb

@@ -719,12 +719,10 @@ def table_exists?(name)
         binds << [nil, schema] if schema
 
         exec_query(<<-SQL, 'SCHEMA', binds).rows.first[0].to_i > 0
-          SELECT COUNT(*)
-          FROM pg_class c
-          LEFT JOIN pg_namespace n ON n.oid = c.relnamespace
-          WHERE c.relkind in ('v','r')
-          AND c.relname = $1
-          AND n.nspname = #{schema ? '$2' : 'ANY (current_schemas(false))'}
+            SELECT COUNT(*)
+            FROM pg_tables
+            WHERE tablename = $1
+           AND schemaname = #{schema ? "'#{schema}'" : "ANY (current_schemas(false))"}
         SQL
       end
 

activerecord/test/cases/adapters/postgresql/schema_test.rb

@@ -91,6 +91,12 @@ def test_table_exists_quoted_names
     end
   end
 
+  def test_table_exists_quoted_table
+    with_schema_search_path(SCHEMA_NAME) do
+        assert(@connection.table_exists?('"things.table"'), "table should exist")
+    end
+  end
+
   def test_with_schema_prefixed_table_name
     assert_nothing_raised do
       assert_equal COLUMNS, columns("#{SCHEMA_NAME}.#{TABLE_NAME}")