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BOOLEAN columns
Applies to ✅ Open Source Edition ✅ Express Edition ✅ Professional Edition ✅ Enterprise Edition
Some databases support the standard SQL BOOLEAN data type, which produces Field<Boolean>
column types in jOOQ's code generator. But even if your dialect doesn't support the BOOLEAN
type out of the box, you may have applied a data type rewrite to force a TINYINT(1)
or CHAR(1)
or NUMBER(1)
column to act as a BOOLEAN
.
When you have such a column, you will want to use it as a condition, and vice-versa. A org.jooq.Field<Boolean>
can be turned into a org.jooq.Condition
using DSL.condition(Field)
. The inverse operation can be achieved using DSL.field(Condition)
:
Condition condition = BOOK.TITLE.eq("Animal Farm"); Field<Boolean> field = field(condition); // Fetch boolean values from a table create.select(field).from(BOOK).fetch(); // Use a boolean field as a condition create.selectFrom(BOOK).where(field).fetch();
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