删除整行，同时只提供一个输入变量

Question

我有一个包含实体的表格： reg_num，user_name，phone_num，names

我想通过输入reg_num值来编写存储过程来删除行的整个数据。

create proc del @reg_num nchar(10)
as
delete reg_num, user_name, phone_num, designation from nameTable 
where reg_num = @reg_num

Answer 1

您没有为删除语句指定列：

create proc del @reg_num nchar(10)
as
delete from nameTable 
where reg_num = @reg_num

Answer 2

您只需指定表名，不需要列出的列。

即

create proc del @reg_num nchar(10)
as
delete from nameTable 
where reg_num = @reg_num

另见： http://www.w3schools.com/sql/sql_delete.asp

Answer 3

删除时，必须遵循以下语法：

declare @regNum int
set @regnum = 1

delete from [table] where regnum = @regnum

在存储过程中，您需要这样做：

create procedure test (@regnum int) as 
begin
delete from [table] where regnum = @regnum
end