A self-contained subquery is independent of the outer query It can be executed stand-alone. It is executed once and the result is used by the outer query. (As a result,it is generally more efficient ...
SubQuery-real-life-example File metadata and controls Code Blame 109 lines (88 loc) · 2.47 KB Raw Download raw file select max (timestampdiff (MINUTE, start_time, end_time)) ...
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