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http://opensource.atlassian.com/projects/hibernate/browse/HHH-465?page=co...
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Geoffrey De Smet commented on HHH-465:
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Oracle dialect:
- "property asc nulls first"
- "property desc nulls first"
- "property asc nulls last"
- "property desc nulls last"
MySQL dialect: use the minus sign trick
- "property asc"
- "-property asc" = desc nulls first
- "-property desc" = asc nulls last
- "property desc"
order by nulls first / last
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Key: HHH-465
URL:
http://opensource.atlassian.com/projects/hibernate/browse/HHH-465
Project: Hibernate3
Issue Type: Improvement
Components: core
Affects Versions: 3.0.3
Reporter: Anthony Patricio
Priority: Minor
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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