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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.
DISTINCT FROM NULL
Applies to ✅ Open Source Edition ✅ Express Edition ✅ Professional Edition ✅ Enterprise Edition
The DISTINCT predicate is a verbose way of
NULL safe comparisons. If one of the operands is
NULL, then it can be simplified to the NULL predicate.
Using Settings.transformPatternsDistinctFromNull, the following transformations can be achieved:
-- With Settings.transformPatternsDistinctFromNull active, this: SELECT a IS NOT DISTINCT FROM NULL, a IS DISTINCT FROM NULL FROM tab; -- ... is transformed into the equivalent expression: SELECT a IS NULL, a IS NOT NULL FROM tab;
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