Available in versions: Dev (3.19) | Latest (3.18) | 3.17 | 3.16 | 3.15 | 3.14 | 3.13 | 3.12 | 3.11 | 3.10 | 3.9
TRUE and FALSE condition
Applies to ✅ Open Source Edition ✅ Express Edition ✅ Professional Edition ✅ Enterprise Edition
When a conditional expression is mandatory, or when using dynamic SQL, it may be required to provide a "dummy" condition that always evaluates to TRUE or FALSE. For this purpose, you can use DSL.trueCondition() or DSL.falseCondition(). For example:
TRUE
TRUE is the identity value of the AND boolean operator, and can be used for procedural or functional reduction of a set of values to a condition:
TRUE AND ID = 1 AND TITLE = 'Animal Farm'
Condition condition = trueCondition();
if (id != null)
condition = condition.and(BOOK.ID.eq(id));
if (title != null)
condition = condition.and(BOOK.TITLE.eq(title));
If a dialect does not support boolean column types, jOOQ will simply generate 1 = 1.
FALSE
FALSE is the identity value of the OR boolean operator, and can be used for procedural or functional reduction of a set of values to a condition:
FALSE OR ID = 1 OR ID = 7
List<Integer> list = List.of(1, 7);
Condition condition = list
.stream()
.map(BOOK.ID::eq)
.reduce(falseCondition(), Condition::or)
If a dialect does not support boolean column types, jOOQ will simply generate 1 = 0.
Feedback
Do you have any feedback about this page? We'd love to hear it!