Question

declare @Commission decimal(18,2)
select @Commission=percentage from Commission
declare @qry varchar(Max)

set @qry='select 5 +'+@Commission +''

EXEC(@qry)

这里

将数据类型varchar转换为数字时出错。

Answer 1

不要将值作为字符串传递给动态SQL。相反，请学会使用sp_executesql：

declare @Commission decimal(18, 2);

select @Commission = percentage
from Commission;

declare @qry varchar(Max);

set @qry='select 5 + @Commission';

exec sp_executesql @qry, 'N@Commission decimal(18, 2)', @Commission=@Commission;

Answer 2

set @qry='select 5 +'+convert(nvarchar(max),@FranchiseeCommission)+''

Answer 3

试试这样：

SET @qry='select 5 +'+CAST(@FranchiseeCommission AS varchar(30))+''

由于您的变量是小数，因此必须将其转换为varchar才能将其与字符串组合。

Answer 4

SQL Server的隐式转换规则使其尝试将varchar隐式转换为decimal。您需要明确地将decimal转换为varchar：

set @qry='select 5 +'+ CAST(@FranchiseeCommission as varchar(20))

Answer 5

如果2012 +

，总会有concat()

set @qry=concat('select 5 +',@Commission)

将数据类型varchar转换为numeric和overflow时出错

5 个答案: