[teiid-issues] [JBoss JIRA] (TEIID-4021) MSSQL Pagination

[Steven Hawkins (JIRA)]

     [ https://issues.jboss.org/browse/TEIID-4021?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Steven Hawkins resolved TEIID-4021.
-----------------------------------
    Resolution: Done


Added offset support to sql server and derby.  SQL Server 2012 and later will use the more standard offset / fetch next syntax.  SQL Server 2008 will use the rownumber function with inline views.

> MSSQL Pagination
> ----------------
>
>                 Key: TEIID-4021
>                 URL: https://issues.jboss.org/browse/TEIID-4021
>             Project: Teiid
>          Issue Type: Enhancement
>          Components: JDBC Connector
>            Reporter: Mark Tawk
>            Assignee: Steven Hawkins
>             Fix For: 9.1
>
>
> I'm using Teiid 8.11.3 with mssql translator.
> I have a huge table over sql server 2008 on which i'm applying pagination.
> I noticed slowliness in the query execution over this table at each time I increase the pagination.
> I monitored the JDBC queries execute by teiid and found out that it is using top n according to the limit used into the query.
> For example:
> in teiid : Select * from mytable LIMIT 90 , 10
> is translated in JDBC: select top 100 from mytable
> Since my table contains millions of records, when fetching the last page, the executed jdbc query is retrieving the whole table top n, to return in result the last 10 records. And the execution is taking too much time.



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