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What if I dont have any unique combinations do i select all the available columns?
The question here is that I might have null values in the column I select how does SQL data compare use these comparison keys that I provide?
else there is also a column at the end stating the number of columns to be compared whats that for? / comments
What if I dont have any unique combinations do i select all the available columns?
The question here is that I might have null values in the column I select how does SQL data compare use these comp...