Slow postGIS data query (was RE: [postgis-users] mapserver dbconnection)

[Mark Cave-Ayland]

> -----Original Message-----
> From:	postgis-users-bounces at postgis.refractions.net on behalf 
> of Frances
> Collier
> Sent:	Mon 10/24/2005 1:29 PM
> To:	postgis-users at postgis.refractions.net
> Cc:	
> Subject:	[postgis-users] mapserver db connection
> Hello,
> 
>  
> 
> I've been trying to find out what exactly Mapserver gets back 
> from Postgis when querying the tables. I haven't found this 
> to be documented anywhere. Does Postgis return a shape file, 
> layer, or simply data rows? The reason I'm asking is that I 
> noticed a huge time difference between connecting to Postgis 
> and simply calling the shape files - with the Postgis being 
> significantly slower. I know Postgis offers a lot more 
> functionality, but for simple comparisons I do not have any 
> type of filter applied.
> 
>  
> 
> I'd appreciate any knowledge, advice, and/or direction.
> 
>  
> 
> Thank you,
> 
> Frances Collier


Hi Frances,

What do you mean by significantly slower? Can you quantify this in seconds,
for example a shapefile query is instant whereas a PostGIS query takes 5s?


Kind regards,

Mark.

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