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http://opensource.atlassian.com/projects/hibernate/browse/HHH-465?page=co...
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Steve Ebersole commented on HHH-465:
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It was suggested that a better work around for MySQL (which still does not have NULLS
FIRST/LAST support btw) would be to do somethign like this:
* for NULLS FIRST : order by case when property is null then 0 else 1 end, property
* for NULLS LAST : order by case when property is null then 1 else 0 end, property
(the original suggestion was to use the MySQL specific function IF instead of the
CASE...)
order by nulls first / last
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Key: HHH-465
URL:
http://opensource.atlassian.com/projects/hibernate/browse/HHH-465
Project: Hibernate Core
Issue Type: Improvement
Components: core
Affects Versions: 3.0.3
Reporter: Anthony Patricio
Priority: Minor
Attachments: CustomNullsFirstInterceptor.java
support of nulls first / last in order clause
"NULLS LAST" is part of the SQL 99 standard.
The syntax is as follows:
ORDER BY [COLUMN NAME] [ASC | DESC] [NULLS FIRST | NULLS LAST]
In different DBs, the sorting of nulls relative to other values is handled differently.
PostgreSQL - Nulls are considered HIGHER than non-nulls.
DB2 - Higher
MSSQL - Lower
MySQL - Lower
Oracle - Higher
The following DBs have supported this functionality:
DB2 V7
Oracle 9i
PostgreSQL, MySQL, SQLServer do not appear to support this from what I can gather.
see
http://forum.hibernate.org/viewtopic.php?t=942176&start=0&postday...
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