Continuing with this week's series of "punch line code" samples, I wanted to share with you this small bit of T-SQL that Tracy McKibben uncovered. It's from the same codebase that we all peeked into a number of weeks back. Anyway, if you needed a command that would delete all rows from a specific table, you'd probably do something like this:

    DELETE FROM HashIndex

Or, maybe this:


Both do the job, each behaving specially in its own special way. Tracy's colleague, however, was satisfied with neither; he wanted to extra careful not to delete rows that didn't exist ...

    DELETE FROM HashIndex
     WHERE ItemHash >= (SELECT MIN(ItemHash) FROM HashIndex)
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