操作数数据类型varchar对于存储过程中的乘法运算符无效

Question

I'm writing a simple query and have the error saying "Operand data type varchar is invalid for multiply operator"

Here is a query:

declare @Num  varchar(24)   
set @Num = '11112222333334444'

select SUBSTRING(@Num, 1, 6) + ISNULL(REPLICATE(''*'', LEN(@Num) - 7), '''') + RIGHT(@Num, 1)

What am I doing wrong?

Thank you

Answer 1

I got it. I have extra ' in my code