T-SQL: creating list of columns that don't match


I am comparing data in 2 identical tables and retuning rows that have columns with wrong data.
In the moment I am selecting all columns and have to look through all of them to find not matching ones.
I'd like to create additional column that will have a list of not matching columns names.

Any ideas how to implement it in sproc?
What are other choices?
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Aneesh RetnakaranDatabase AdministratorCommented:
did you try red-gate data compare tool,  trial version has full capabilities and works for 14 days

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Jim HornMicrosoft SQL Server Developer, Architect, and AuthorCommented:
How many columns are we talking about?

afaik the only way to pull this off is..
-- TableA, not in TableB
SELECT a.Col1 -- add every column a here
FROM TableA a
   LEFT JOIN TableB b ON a.id = b.id AND -- add every dang a.column = b.column we're talking about here

-- TableB, not in TableA
SELECT b.Col1 -- add every column b here
FROM TableB b
   LEFT JOIN TableA a ON b.id = a.id AND -- add every dang b.column = a.column we're talking about here

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btw does 'Wrong' mean 'not matches'?
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