存储过程:
CREATE Proc BK_PR_UpdateActiveInfo
@MemberID int,
@EmailSendTime datetime,
@TableName char(50)as
declare @s varchar(1000)
set @s = 'Update '+@TableName+' Set EmailSendTime ='''+ @EmailSendTime+''' where MemberID='+@MemberID+'';
print @s
return
GO执行该存储过程:
declare @i datetime
set @i = getdate()
exec BK_PR_UpdateActiveInfo 3,@i,'Test'结果出现这个错误:
服务器: 消息 241,级别 16,状态 1,过程 BK_PR_UpdateActiveInfo,行 13
从字符串转换为 datetime 时发生语法错误。我搜索了一下网络,没有找到合适的答案,现在就这一问题请教哈大家,谢谢
CREATE Proc BK_PR_UpdateActiveInfo
@MemberID int,
@EmailSendTime datetime,
@TableName char(50)as
declare @s varchar(1000)
set @s = 'Update '+@TableName+' Set EmailSendTime ='''+ @EmailSendTime+''' where MemberID='+@MemberID+'';
print @s
return
GO执行该存储过程:
declare @i datetime
set @i = getdate()
exec BK_PR_UpdateActiveInfo 3,@i,'Test'结果出现这个错误:
服务器: 消息 241,级别 16,状态 1,过程 BK_PR_UpdateActiveInfo,行 13
从字符串转换为 datetime 时发生语法错误。我搜索了一下网络,没有找到合适的答案,现在就这一问题请教哈大家,谢谢
@MemberID int,
@EmailSendTime datetime,
@TableName char(50)as
declare @s varchar(1000)
set @s = 'Update '+@TableName+' Set EmailSendTime ='''+ convert(varchar(10),@EmailSendTime,120)+''' where MemberID='+cast(@MemberID as varchar)+'';
print @s
return
GO
@MemberID int,
@EmailSendTime datetime,
@TableName varchar(50)as
declare @s varchar(1000)
set @s = 'Update '+@TableName+' Set EmailSendTime = '''+ convert(varchar(10),@EmailSendTime,120)+''' where MemberID = '+cast(@MemberID as varchar)+'';
print @s
return
GOdeclare @i datetime
set @i = getdate()
exec BK_PR_UpdateActiveInfo 3,@i,'Test'drop proc BK_PR_UpdateActiveInfo/*
Update Test Set EmailSendTime = '2008-11-27' where MemberID = 3
*/
@MemberID int,
@EmailSendTime datetime,
@TableName char(50)as
declare @s varchar(1000)
set @s = 'Update '+@TableName+' Set EmailSendTime ='''+ convert(varchar(20),@EmailSendTime,120)+''' where MemberID='+cast(@MemberID as varchar)+'';
print @s
return
GO
--这个是:convert(varchar(19),@EmailSendTime,120)
CREATE Proc BK_PR_UpdateActiveInfo
@MemberID int,
@EmailSendTime datetime,
@TableName varchar(50)as
declare @s varchar(1000)
set @s = 'Update '+@TableName+' Set EmailSendTime = '''+ convert(varchar(19),@EmailSendTime,120)+''' where MemberID = '+cast(@MemberID as varchar)+'';
print @s
return
GOdeclare @i datetime
set @i = getdate()
exec BK_PR_UpdateActiveInfo 3,@i,'Test'drop proc BK_PR_UpdateActiveInfo/*
Update Test Set EmailSendTime = '2008-11-27 11:51:32' where MemberID = 3
*/
1 :普通SQL语句可以用Exec执行 eg: Select * from tableName
Exec('select * from tableName')
Exec sp_executesql N'select * from tableName' -- 请注意字符串前一定要加N 2:字段名,表名,数据库名之类作为变量时,必须用动态SQL eg:
declare @fname varchar(20)
set @fname = 'FiledName'
Select @fname from tableName -- 错误,不会提示错误,但结果为固定值FiledName,并非所要。
Exec('select ' + @fname + ' from tableName') -- 请注意 加号前后的 单引号的边上加空格 当然将字符串改成变量的形式也可
declare @fname varchar(20)
set @fname = 'FiledName' --设置字段名 declare @s varchar(1000)
set @s = 'select ' + @fname + ' from tableName'
Exec(@s) -- 成功
exec sp_executesql @s -- 此句会报错 declare @s Nvarchar(1000) -- 注意此处改为nvarchar(1000)
set @s = 'select ' + @fname + ' from tableName'
Exec(@s) -- 成功
exec sp_executesql @s -- 此句正确 3. 输出参数
declare @num int,
@sqls nvarchar(4000)
set @sqls='select count(*) from tableName'
exec(@sqls)
--如何将exec执行结果放入变量中? declare @num int,
@sqls nvarchar(4000)
set @sqls='select @a=count(*) from tableName '
exec sp_executesql @sqls,N'@a int output',@num output
select @num