protected function _process( $stmts )
	{
		$this->_msg( 'Renameing shipping to costs in catalog index price table', 0 );

		if( $this->_schema->tableExists( 'mshop_catalog_index_price' ) === true
			&& $this->_schema->columnExists( 'mshop_catalog_index_price', 'shipping' ) === true )
		{
			$this->_execute( $stmts );
			$this->_status( 'done' );
		}
		else
		{
			$this->_status( 'OK' );
		}
	}
protected function _process( $stmts )
	{
		$this->_msg( 'Renameing shipping to costs in catalog index price table', 0 );

		if( $this->_schema->tableExists( 'mshop_catalog_index_price' ) === true
			&& $this->_schema->columnExists( 'mshop_catalog_index_price', 'shipping' ) === true )
		{
			$this->_execute( $stmts );
			$this->_status( 'done' );
		}
		else
		{
			$this->_status( 'OK' );
		}
	}
protected function _process ( $ stmts ) { $ this -> _msg ( 'Renameing shipping to costs in catalog index price table' , 0 ) ; if ( $ this -> _schema -> tableExists ( 'mshop_catalog_index_price' ) === true && $ this -> _schema -> columnExists ( 'mshop_catalog_index_price' , 'shipping' ) === true ) { $ this -> _execute ( $ stmts ) ; $ this -> _status ( 'done' ) ; } else { $ this -> _status ( 'OK' ) ; } }
Add column to table if it doesn't exist.

@param string $stmts List of SQL statements to execute for adding columns
Add column to table if it doesn t exist .