SQL Server 2012将数据类型varchar转换为数值时出错

Question

I have a very big view that uses many tables and other views. When I select * from this big view, I get an error

error converting data type varchar to numeric

The problem is I don't know where exactly it happens. Do I have to drill into all the involved objects, or there is a way to know where exactly is the problem?

Answer 1

it could also be a function like:

declare @pippo numeric
set @pippo=null
select ISNULL(@pippo, 'x')

this will raise same conversion error

hope this help

Answer 2

Take the definition of the view, and make it into a SELECT statement. Then remove half the columns and run it, keep removing columns until the problem goes away. If it goes away, then add them back until you find the problem. If it doesn't go away, then the problem is in a join.