|The jOOQ User Manual : SQL building : QueryParts : SQL transformation : Pattern based transformation : Normalise IN list with single element to comparison||previous : next|
This is experimental functionality, and as such subject to change. Use at your own risk!
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
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;