select * from orderitem select * from orderitem and orderitemId= #{orderitemId} and orderId= #{orderId} select * from orderitem where orderitemId=${value} insert into orderitem (orderId,goodsId,goodsQuantity) values (#{orderId},#{goodsId},#{goodsQuantity}); update orderitem set orderId=#{orderId},goodsId=#{goodsId},goodsQuantity=#{goodsQuantity} where orderitemId=#{orderitemId} delete from orderitem where orderitemId=${value}