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Applies to ✅ Open Source Edition ✅ Express Edition ✅ Professional Edition ✅ Enterprise Edition
In SQL, you cannot compare
NULL with any value using comparison predicates, as the result would yield
NULL again, which is neither
FALSE (see also the manual's section about conditional expressions). In order to test a column expression for
NULL, use the
NULL predicate as such:
TITLE IS NULL TITLE IS NOT NULL
This example using jOOQ:
Translates to the following dialect specific expressions:
-- All dialects BOOK.TITLE IS NULL
(These are currently generated with jOOQ 3.19, see #10141), or translate your own on our website
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