Question

I need to achieve this

update [table]
set [column c] = ( select [column a] + ' ' + [column b] from [table] )

but I get this error message

Subquery returned more than 1 value. This is not permitted when the subquery follows =, !=, <, <= , >, >= or when the subquery is used as an expression.

How can I achieve the desired effect without the undesired results 🙂

Jim

Answer 1

That’s easy:

update table
set c = a + ' ' + b

This will update all rows in the table.