youdeet
No user record in our sample, but youdeet has activity below (stories or comments). Likely we have partial data — the full bulk-load will fill profiles in.
No user record in our sample, but youdeet has activity below (stories or comments). Likely we have partial data — the full bulk-load will fill profiles in.
One more point in the "Anti Join". Use EXISTS instead of IN and LEFT JOIN if you only want to check existence of a row in another large table / subquery based on the conditions. EXISTS returns true as soon as it has…