Re: performance question related to pgsql

hi stephen,

thanks very much for the response. Are there any special commands to analyze
the index before using the table. If i rename the table, will the indexes
still stay with the table ( i hope so).

best regards
vijay eranti

On 2/10/06, Stephen Frost <sfrost(at)snowman(dot)net> wrote:
>
> * david drummard (vijayspam(at)gmail(dot)com) wrote:
> > My question is what is the best way to do step (1) so that after the
> copy is
> > done, the table is fully indexed and properly balanced and optimized
> for
> > query.
> > Should i create indexes before or after import ? I need to do this in
> > shortest period of time so that the data is always uptodate. Note that
> > incremental updates are not possible since almost every row will be
> changed
> > in the new file.
>
> Create indexes after import, definitely. analyze after indexes have
> been created. You don't need to vacuum if you're creating a whole new
> table each time. Remember that if you need to adjust analyze parameters
> for some reason that you'll need to do that on every table creation as
> well. Using COPY is a good approach. Not doing incremental updates
> when most of the rows are changing also makes sense.
>
> Thanks,
>
> Stephen
>
>
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