Are there any examples of using postgis that I can use for research?
 
My current problem is the use of the Contains function.  Here’s my statement:
 
Select astext(wkb_geometry), name, state
From usroads
Where state = ‘Alabama’
And name like ‘%Ross Clark%’
And Contains(polygon('(-85.440253,31.207678),(-85.421703,31.207678),
                                 (-85.421703,31.226228),(-85.440253,31.226228),
                                 (-85.440253,31.207678)'), wkb_geometry);
 
Here is the error I’m getting back:
 
ERROR:  function contains(polygon, geometry) does not exist
HINT:  No function matches the given name and argument types. You may need to add explicit type casts.
 
I’ve tried numerous ways to fix this but I haven’t had any luck. I’d really appreciate any help I can get.
 
Thank you,
Frances