[postgis-users] Problem with using query layer in ArcGIS 10

[William Humphrey Temperley]

From: postgis-users-bounces at postgis.refractions.net
[mailto:postgis-users-bounces at postgis.refractions.net] On Behalf Of Melpati,
Muni
Sent: 28 June 2012 21:19
To: postgis-users at postgis.refractions.net
Subject: [postgis-users] Problem with using query layer in ArcGIS 10

 

Hi I was querying posgis layers from ArcGIS 10. I found that if add postgis
layer with huge number of records, I am having trouble with accessing its
attributes. When I try to open the table I get "Could not load data from the
data source. If you can correct the problem, press the refresh button to
reload data. Possible problems can include bad network connection, invalid
field, etc. The SQL statement was not a select statement. The operation is
not supported by this implementation."

 

I found similar problem somewhere in GIS forums where the user had to change
the MAXBLOBSIZE value to -1 (unlimited) in the SDE SERVER CONFIG FILE. Is
there similar fix to postgis/postgres? I appreciate your support.

Thanks.

 

 

 

By default ArcGIS uses all the fields in the query as the unique key.  Tools
such as identify labeling and the attribute table do not work when this is
the case. To make them work the primary key of the data source should be
used as the unique key. This also speeds up the loading of data. 

 

After writing a query, you need to click the Validate button and tick "Show
advanced options". The Next button will now be highlighted - click it.
Uncheck all fields in the Unique identifier fields list except the correct
primary key or unique field.  The attribute table should now work if you
provided a unique key.

 

HTH, 

 

Will Temperley

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