This documentation is for the unreleased development version of jOOQ. Click on the above version links to get this documentation for a supported version of jOOQ.
Normalise IN list with single element to comparison
Applies to ✅ Open Source Edition ✅ Express Edition ✅ Professional Edition ✅ Enterprise Edition
When comparing an IN predicate with a single value, then it may be beneficial for other pattern replacement if that expression is normalised to a comparison predicate.
Using Settings.transformPatternsNormaliseInListSingleElementToComparison, the following transformations can be achieved:
-- With Settings.transformPatternsNormaliseInListSingleElementToComparison active, this: SELECT x IN (a), x NOT IN (a) FROM tab; -- ... is transformed into the equivalent expression: SELECT x = a, -- x IN (a), x != a -- x NOT IN (a) FROM tab;
Feedback
Do you have any feedback about this page? We'd love to hear it!