Update all SQL NULL values in multiple columns using Column level WHERE clause?

Question

We have a database with a bunch of wide tables (40-80 columns each) and just found a bug that introduced NULL values into about 500 of the records. The NULL values can appea

Answer 1

Just poll the sys.columns table for each table and create some dynamic sql... It's brute force but it saves you from having to write all the t-sql out.

For example:

DECLARE @TABLENAME AS VARCHAR(255)

SET @TABLENAME = 'ReplaceWithYourTableName'

SELECT 'UPDATE ' + @TableName  + ' SET ' + CAST(Name AS VARCHAR(255)) + ' = 99 
 WHERE ' + CAST(Name AS VARCHAR(255)) + ' IS NULL'
FROM sys.columns 
WHERE object_id = OBJECT_ID(@TABLENAME)
    AND system_type_id = 56 -- int's only