Available in versions: Dev (3.18) | Latest (3.17)

This is experimental functionality, and as such subject to change. Use at your own risk!


Applies to ✅ Open Source Edition   ✅ Express Edition   ✅ Professional Edition   ✅ Enterprise Edition

A concatenation of AND predicates combining non-equalities that always use the same operand on one side can be replaced by a more concise, but equivalent NOT IN predicate.

Using Settings.transformPatternsAndNeToNotIn, the following transformations can be achieved:

-- With Settings.transformPatternsAndNeToNotIn active, this:
SELECT * FROM tab WHERE x != a AND x != b AND x != c;

-- ... is transformed into the equivalent expression:
SELECT * FROM tab WHERE x NOT IN (a, b, c);

See also OR to IN


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