connection.select_rows 'sql' returns an array (rows) of arrays (field values). Closes #2329.

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@7497 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

1 files changed, 6 insertions, 2 deletions

diff --git a/activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb b/activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb
index 75dafe61da..effb36faf1 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb
@@ -23,10 +23,14 @@ module ActiveRecord
       # Returns an array of the values of the first column in a select:
       #   select_values("SELECT id FROM companies LIMIT 3") => [1,2,3]
       def select_values(sql, name = nil)
-        result = select_all(sql, name)
-        result.map{ |v| v.values.first }
+        result = select_rows(sql, name)
+        result.map { |v| v[0] }
       end
 
+      # Returns an array of arrays containing the field values.
+      # Order is the same as that returned by #columns.
+      def select_rows(sql, name = nil) end
+
       # Executes the SQL statement in the context of this connection.
       def execute(sql, name = nil)
         raise NotImplementedError, "execute is an abstract method"