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HHH-16048 add 'hibernate.query.hql.portable_integer_division' 

update doc
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Gavin King 2024-02-16 15:47:05 +01:00
parent d7fe31643a
commit 50bbc803ba
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documentation/src/main/asciidoc/querylanguage/Expressions.adoc
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@ -323,7 +323,15 @@ When both operands of a binary numeric operator have the same type, the result t
[WARNING]
====
Thus, `3/2` performs integer division and evaluates to `1`.
By default, the semantics of integer division depend on the database:
- On most databases, division of an integer by an integer evaluates to an integer, just like in Java.
Thus, `3/2` evaluates to `1`.
- But on some databases, including Oracle, MySQL, and MariaDB, integer division may result in a non-integral value.
So `3/2` evaluates to `1.5` on these databases.
This default behavior may be changed using configuration property `hibernate.query.hql.portable_integer_division`.
Setting this property to `true` instructs Hibernate to produce SQL that emulates Java-style integer division (that is, `3/2 = 1`) on platforms where that is not the native semantics.
====
When the operands are of different type, one of the operands is implicitly converted to _wider_ type, with wideness given, in decreasing order, by the list below: