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This problem seemed simple at first but it really makes you think hard about how you're using your JOINs like what would happen if you FULL JOIN 2 tables with different number of rows for their common ID column. Also a good case for using COALESCE.
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This problem seemed simple at first but it really makes you think hard about how you're using your JOINs like what would happen if you FULL JOIN 2 tables with different number of rows for their common ID column. Also a good case for using COALESCE.
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