casting source_value#806
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wibeasley wants to merge 3 commits into
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the rows will always be different, so there's no point in looking for duplication
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we had some results have a value of NULL, which was implicitly cast to an int. Then that created a conversion error when stacked/unioned with the varchars.
It's minor, but I also changed the
uniontounion allto improve efficiency for the same result.https://www.geeksforgeeks.org/sql/union-vs-union-all-in-sql/