1 files changed, 2 insertions, 9 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/schema_cache.rb b/activerecord/lib/active_record/connection_adapters/schema_cache.rb
index bee03abd44..447e309f23 100644
--- a/activerecord/lib/active_record/connection_adapters/schema_cache.rb
+++ b/activerecord/lib/active_record/connection_adapters/schema_cache.rb
@@ -7,17 +7,10 @@ module ActiveRecord
 
       def initialize(conn)
         @connection = conn
-        @tables              = {}
+        @tables     = {}
 
         @columns     = Hash.new do |h, table_name|
-          h[table_name] =
-            # Fetch a list of columns
-            conn.columns(table_name, "#{table_name} Columns").tap do |cs|
-              # set primary key information
-              cs.each do |column|
-                column.primary = column.name == primary_keys[table_name]
-              end
-            end
+          h[table_name] = conn.columns(table_name, "#{table_name} Columns")
         end
 
         @columns_hash = Hash.new do |h, table_name|