DECLARE @providerIdList varchar(400)
DECLARE @q varchar(400)
SELECT @q = ''
SELECT @providerIdList = '(1, 5, 15)'
SET @q = 'SELECT u.Id FROM [user] u
LEFT JOIN Provider p ON u.Provider_FK = p.Id
LEFT JOIN Providers2Users pu ON pu.user_FK = u.Id
LEFT JOIN Provider ap ON ap.Id = pu.provider_fk
WHERE p.Id IN ' + @providerIdList
exec @q
以下是我尝试执行上面显示的查询时遇到的异常
Msg 203, Level 16, State 2, Line 18
The name 'SELECT u.Id FROM [user] u
LEFT JOIN Provider p ON u.Provider_FK = p.Id
LEFT JOIN Providers2Users pu ON pu.user_FK = u.Id
LEFT JOIN Provider ap ON ap.Id = pu.provider_fk
WHERE p.Id IN (1, 5, 15)' is not a valid identifier.
如果有人能指出这些错误的原因我真的很感激
答案 0 :(得分:8)
您正在寻找sp_executesql。这样做:
DECLARE @providerIdList nvarchar(400)
DECLARE @q nvarchar(400)
SELECT @q = N''
SELECT @providerIdList = N'(1, 5, 15)'
SET @q = N'SELECT u.Id FROM [user] u
LEFT JOIN Provider p ON u.Provider_FK = p.Id
LEFT JOIN Providers2Users pu ON pu.user_FK = u.Id
LEFT JOIN Provider ap ON ap.Id = pu.provider_fk
WHERE p.Id IN ' + @providerIdList
exec sp_executesql @q
您现在正在尝试将该命令作为存储过程调用,但显然不是这样。 sp_executesql是一个系统存储过程,它允许您执行有效的SQL语句。系统存储过程位于主数据库FYI。
答案 1 :(得分:5)
您也可以使用
exec(@q)
这将执行文字字符串。
区别在于括号!
答案 2 :(得分:0)
您尝试执行无效的存储过程@q,请使用:
execute (@q)
答案 3 :(得分:0)
确定您使用NVARCHAR而不是VARCHAR。就在那时,您可以使用EXEC sp_executesql @q
。
答案 4 :(得分:0)
宣布@params NVARCHAR(4000)
声明@sql NVARCHAR(4000)
SET @providerIdList ='(1,5,15)'
SET @sql ='SELECT u.Id FROM [user] u LEFT JOIN Provider p ON u.Provider_FK = p.Id LEFT JOIN Providers2Users pu ON pu.user_FK = u.Id LEFT JOIN Provider ap ON ap.Id = pu.provider_fk WHERE p.Id IN'+ @providerIdList'
SELECT @params = N'@ providerIdList VARCHAR OUTPUT'
exec sp_executesql @sql,@ params,@ providerIdList = @ providerIdList
答案 5 :(得分:0)
或者根据您的代码显示,我根本不会使用动态SQL。如果可能,应避免使用动态SQl。
SELECT u.Id FROM [user] u
LEFT JOIN Provider p ON u.Provider_FK = p.Id
LEFT JOIN Providers2Users pu ON pu.user_FK = u.Id
LEFT JOIN Provider ap ON ap.Id = pu.provider_fk
WHERE p.Id IN (1, 5, 15)