db-derby-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Sylvain RICHET <derb...@gmail.com>
Subject Re: Using/Adressing a "row number" in a SELECT query
Date Fri, 17 Feb 2006 11:28:48 GMT
Though it is astonishing there is no way to address/access the "row number"
on DERBY , whereas it's possible with other database systems...

Have you ever heard about any workaround ?

On 2/17/06, Legolas Woodland <legolas.w@gmail.com> wrote:
>
> Sylvain RICHET wrote:
>
> Thanks Legolas,
>
> ... but limiting the fetch size by JDBC API supported methods
> (setFetchSize) implies that i have already loaded ALL records from database,
> no ?
>
>  I asked about this feature  sometimes before.
> it is not present in current derby version , but you can vote on its jira
> entry or create a jira entry for it.
>
>
> However, the datas persisted in my DERBY database concern logging. It
> means that i would have to get thousands of records.
>
> On 2/17/06, Legolas Woodland <legolas.w@gmail.com> wrote:
> >
> >  Sylvain RICHET wrote:
> >
> > Hi everyone,
> >
> > In a selection statement, i would like to get blocks of records.
> > Thus, i need to filter records by a "row number", directly at the SELECT
> > level.
> >
> > It seems that the way to address a row number is not (SQL) standard.
> > (different "proprietary" implementations)
> >
> > In Oracle, there is the "rowid".
> > In MySQL, the "LIMIT" clause can do it.
> > In SQL Server, i think there is the "ROW_NUMBER() OVER..."
> > In DB2 (on AS/400) , there is the "RRN" (Relative Record Number)...
> >
> > What about Derby database ?
> > How is it implemented on this server ?
> >
> > I know i could use
> >
> > Thanks in advance.
> >
> >  Derby sql does not has any facilities for limiting number of rows in
> > select statement.
> > you can just limit the fetch size in JDBC resultSets.
> >
> >
>
>

Mime
View raw message