adding backwards compatibility for non-prepare statement handling drivers

activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb

@@ -4,7 +4,15 @@ module DatabaseStatements
       # Returns an array of record hashes with the column names as keys and
       # column values as values.
       def select_all(sql, name = nil, bind_values = [])
-        select(sql, name, bind_values)
+        if supports_statement_cache?
+          select(sql, name, bind_values)
+        else
+          return select(sql, name) if bind_values.empty?
+          binds = bind_values.dup
+          select sql.gsub('?') {
+            quote(*binds.shift.reverse)
+          }, name
+        end
       end
 
       # Returns a record hash with the column names as keys and column values
@@ -42,7 +50,7 @@ def execute(sql, name = nil)
       # Executes +sql+ statement in the context of this connection using
       # +bind_values+ as the bind substitutes.  +name+ is logged along with
       # the executed +sql+ statement.
-      def exec(sql, name = nil, binds = [])
+      def exec(sql, name = 'SQL', binds = [])
       end
 
       # Returns the last auto-generated ID from the affected table.
@@ -74,6 +82,12 @@ def outside_transaction?
         nil
       end
 
+      # Returns +true+ when the connection adapter supports prepared statement
+      # caching, otherwise returns +false+
+      def supports_statement_cache?
+        false
+      end
+
       # Runs the given block in a database transaction, and returns the result
       # of the block.
       #

activerecord/lib/active_record/connection_adapters/mysql_adapter.rb

@@ -203,6 +203,12 @@ def adapter_name #:nodoc:
         ADAPTER_NAME
       end
 
+      # Returns +true+ when the connection adapter supports prepared statement
+      # caching, otherwise returns +false+
+      def supports_statement_cache?
+        true
+      end
+
       def supports_migrations? #:nodoc:
         true
       end

activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb

@@ -211,6 +211,12 @@ def adapter_name
         ADAPTER_NAME
       end
 
+      # Returns +true+ when the connection adapter supports prepared statement
+      # caching, otherwise returns +false+
+      def supports_statement_cache?
+        true
+      end
+
       # Initializes and connects a PostgreSQL adapter.
       def initialize(connection, logger, connection_parameters, config)
         super(connection, logger)

activerecord/lib/active_record/connection_adapters/sqlite_adapter.rb

@@ -62,6 +62,12 @@ def supports_ddl_transactions?
         sqlite_version >= '2.0.0'
       end
 
+      # Returns +true+ when the connection adapter supports prepared statement
+      # caching, otherwise returns +false+
+      def supports_statement_cache?
+        true
+      end
+
       def supports_migrations? #:nodoc:
         true
       end