[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-2655) SQLServer2005Dialect (ROW_NUMBER for Paging)
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http://opensource.atlassian.com/projects/hibernate/browse/HHH-2655?page=c...
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Andrei Chirila commented on HHH-2655:
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Joao, there seems to be a bug in your implementation. "TOP offset + last" does
not always translate to "TOP 100 percent". Currently, your implementation covers
only the case when offset = 0.
If this solution is indeed an improvement, the percentage should be computed depending on
the value of the offset. With respect to code clarity, I personally consider the "TOP
offset + last" solution to be better than a "TOP x percent" one; but if
performance is considerably improved, this is definitely worth it.
SQLServer2005Dialect (ROW_NUMBER for Paging)
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Key: HHH-2655
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2655
Project: Hibernate Core
Issue Type: New Feature
Components: core
Affects Versions: 3.2.2, 3.2.3, 3.2.4
Environment: SQLServer 2005, Hibernate 3.2.2+
Reporter: Wells Tiedeman
Attachments: BindingSqlServerDialect.java, SQLServer2005Dialect.java,
SQLServer2005Dialect.java, SQLServer2005Dialect.java, SQLServer2005Dialect.java
Original Estimate: 1 minute
Remaining Estimate: 1 minute
Add a SQLServer2005Dialect class to the product that leverages the new ROW_NUMBER
capabilities within SQLServer2005 to do paged result sets more efficiently. See attached
source...
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