[Qgis-user] OS Mastermap, SQL Server and QGIS

[Steven Campbell]

Hi Nathan

 

Many Thanks

 

Will this be available in the nightly builds of QGIS?

 

Thanks

 

Steve

 

From: Nathan Woodrow [mailto:madmanwoo at gmail.com] 
Sent: 02 July 2013 04:02
To: Steven Campbell
Cc: qgis-user
Subject: Re: [Qgis-user] OS Mastermap, SQL Server and QGIS

 

Hey Steven,

 

I have made the change in master now too allow QGIS too look in the
spatial index table for faster extent loading.  Works like a treat.

 

I would still have the geometry_columns table to allow QGIS to find the
tables quicker but you don't need the max_x, etc stuff.

 

Thanks for the tip.

 

Regards,

Nathan

 

On Sat, Jun 29, 2013 at 12:00 AM, Steven Campbell
<s.campbell at poole.gov.uk> wrote:

Hi

 

Does anyone else have significant time delays when trying to open large
datasets from a SQL database in QGIS? I have uploaded my Ordnance survey
MasterMap data (coverage is the size of an average English County) and
although the initial connection to identify the table is very quick, the
loading of the table (even when zoomed in to a very big scale (i.e.
1:100) it takes a very long time to open. Once opened the speed is very
quick, but getting it to open takes a lot of patience as the application
appears to hang.

 

On a slightly related topic, if I have connected to one MSSQL database,
QGIS then struggles if I try to connect to an additional database, again
it just appears to hang for a considerable period of time (30 minutes or
more at times), it seems odd especially as the connection to the first
SQL database is almost instant....

 

Any suggestions as to how I can improve this speed would be greatly
appreciated.

 

Thanks

 

Steve Campbell

GIS Manager

Corporate Strategy and Communications

Borough of Poole | Civic Centre | Poole BH15 2RU

Tel: 01202 633 362

Email: s.campbell at poole.gov.uk

Website:www.boroughofpoole.com <http://www.boroughofpoole.com/> 

Think Green! Please Recycle

 

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