变量的SQL语句exec老是提示语法错误，麻烦大家看看
declare @csql varchar(8000),@topn varchar(10)
set @topn = 10
set @csql = 'insert into traff(bh,tf,t1,t2,t34,t50,t8) select top '+@topn+ ' ' 'SJ-07070003 ' ' as bh, ' 'SJ-07070003001 ' ' as tf, ' '20 ' ' as t1, ' '48 ' ' as t2, ' '24F0TXUB3 ' ' as t34, ' 'fedr ' ' as t50,2200 as t8 from sysid where not exists(select * from traff where traff.tf like ' 'SJ-0707____ ' '+Right(10001+sysid.id-1,4)) '
exec @csql
上面的语句执行后，老是提示：
服务器: 消息 203，级别 16，状态 2，行 5
名称 'insert into traff(bh,tf,t1,t2,t34,t50,t8) select top 10 'SJ-07070003 ' as bh, 'SJ-07070003001 ' as tf, '20 ' as t1, '48 ' as t2, '24F0TXUB3 ' as t34, 'fedr ' as t50,2200 as t8 from sysid where not exists(select * from traff where traff.tf like 'SJ-0707____ '+Right(10001+sysid.id-1,4)) ' 不是有效的标识符。
请问问题出在哪里？？？？
[解决办法]
exec @csql
改为:
exec(@csql)
[解决办法]
exec (@csql)
