求这个语句的作用，越详细越好

[freedom_fate]

Declare @ID int; Declare @ERR int; INSERT INTO Orders VALUES(@UserId, @Date, @ShipAddress1, @ShipAddress2, @ShipCity, @ShipState, @ShipZip, @ShipCountry, @BillAddress1, @BillAddress2, @BillCity, @BillState, @BillZip, @BillCountry, 'UPS', @Total, @BillFirstName, @BillLastName, @ShipFirstName, @ShipLastName, @AuthorizationNumber, 'US_en'); SELECT @ID=@@IDENTITY; INSERT INTO OrderStatus VALUES(@ID, @ID, GetDate(), 'P'); SELECT @ERR=@@ERROR;

[数字化从业者老高]

Declare @ID int;--定义整型变量ID
Declare @ERR int; --定义错误编号变量@ERR
INSERT INTO Orders 
VALUES(@UserId, @Date, @ShipAddress1, @ShipAddress2, @ShipCity, @ShipState, @ShipZip, @ShipCountry, @BillAddress1, @BillAddress2, @BillCity, @BillState, @BillZip, @BillCountry, 'UPS', @Total, @BillFirstName, @BillLastName, @ShipFirstName, @ShipLastName, @AuthorizationNumber, 'US_en'); 
--向Orders表中插入数据一条
SELECT @ID=@@IDENTITY; --得到上述插入语句后表Orders中最新的自增列编号，同时将编号赋值给定义的整型变量@ID
INSERT INTO OrderStatus 
VALUES(@ID, @ID, GetDate(), 'P'); --向OrderStatus表中插入最新的@ID
SELECT @ERR=@@ERROR;--如果有错误，将错误编号赋值给@ERR

[Mr_Nice]

[Quote=引用 1 楼 gaojier1000 的回复:]
SQL codeDeclare@IDint;--定义整型变量IDDeclare@ERRint;--定义错误编号变量@ERRINSERTINTO OrdersVALUES(@UserId,@Date,@ShipAddress1,@ShipAddress2,@ShipCity,@ShipState,@ShipZip,@ShipCountry,@BillAddress1,@BillAddress2,@B¡­
[/Quote]

同上！

[zjb211434]

学习。。。

[feixianxxx]

[Quote=引用 1 楼 gaojier1000 的回复:]
SQL codeDeclare@IDint;--定义整型变量IDDeclare@ERRint;--定义错误编号变量@ERRINSERTINTO OrdersVALUES(@UserId,@Date,@ShipAddress1,@ShipAddress2,@ShipCity,@ShipState,@ShipZip,@ShipCountry,@BillAddress1,@BillAddress2,@B¡­
[/Quote]
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