Set all integer columns in all tables to 0 where the value is currently null

Question

I'm looking for a way in SQL Server to iteratively run the following query (or to achieve the same result):

UPDATE <table> SET <column> = 0 WHERE <column> IS NULL

I've used the following query to get all the columns of type 'int', but how can I achieve the above requirement?

SELECT table_name, column_name FROM information_schema.columns where data_type = 'int' and table_name not like 'v_%' and table_name not like 'sym_%'

Answer 1

This is reasonably simple with some dynamic sql. I would be EXTREMELY careful doing this on any system and would ask questions about why this is a good idea. I would never do this on my system but the code is actually fairly straight forward.

declare @SQL nvarchar(max) = ''

SELECT @SQL = @SQL + 'Update [' + TABLE_NAME + '] set [' + COLUMN_NAME + '] = 0 where [' + COLUMN_NAME + '] IS NULL;'
FROM information_schema.columns 
where data_type = 'int' 
    and table_name not like 'v_%' 
    and table_name not like 'sym_%'

select @SQL
--exec sp_executesql @SQL