On Wed, Jul 25, 2012 at 02:27:14PM +0100, Rebecca Clarke wrote: > Your code below works for me also. It's obviously just my data. > > the field is data type bytea: > > \x010300000000000000
Looks like HEXWKB to me, for "POLYGON EMPTY". What makes you think it is "bytea" ? > I ran: > > select st_astext(the_geom) from tbl where id = 6052 > > and it returns: "POLYGON EMPTY" > > When I run the st_isvalid on it: > > select st_isvalid(the_geom) from tbl where id = 6052 > or > select st_isvalid(the_geom::geometry) from tbl where id = 6052 > > It throws the segmentation error. > > I just upgrade to postgis 1.5.5 and this made no difference. Can you show the output of "SELECT postgis_full_version()" _and_ the output of "SELECT version()" ? Is there an index on "tbl" ? --strk; _______________________________________________ postgis-users mailing list postgis-users@postgis.refractions.net http://postgis.refractions.net/mailman/listinfo/postgis-users