[Mapserver-users] problem with PostGIS layers with a bit() column

[David Blasby]

Perry Casson wrote:


> Here's the error:
> Fatal error: [MapServer Error]: msPOSTGISLayerGetShape(): Error 
> executing POSTGIS SQL statement (in FETCH ALL): DECLARE mycursor2 BINARY 
> CURSOR FOR SELECT 
> esn::text,gmuid::text,messageid::text,timestamp::text,recievedat::text,devicetype::text,identifier::text,isgps::text,longitude::text,latitude::text,gpsvalid::text,gpstime::text,v1::text,v2::text,v3::text,max1::text,max2::text,max3::text,actuator_previous::text,actuator_current::text,userdata::text,battery::text,asbinary(force_collection(force_2d(geo)),'NDR') 
> from wp_point WHERE OID = 27497 -ERROR: Cannot cast type bit to text

As the error says, it cannot convert the bit type to text.

You can fix this by either:

1. adding a conversion and CAST function to convert bit to text
2. change your column type from bit to char.  You can also add a
constraint on the the table that says (<column> ='1' OR <column> ='0').

dave


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