title: Postgis : ERROR: parse error - invalid geometry
body: <p>I'm using POSTGIS="2.0.1 r9979" and facing following error : </p>
  
  <pre><code>ERROR:  parse error - invalid geometry
  HINT:  "POINT(18.570275,7" &lt;-- parse error at position 17 within geometry
  CONTEXT:  SQL function "st_dwithin" during inlining
  </code></pre>
  
  <p>while trying sql :</p>
  
  <pre><code> SELECT addressid FROM maddress 
    WHERE ST_DWithin(geocode, 'POINT(20.0924758 72.7341809 19.137381,72.837223)' , 100.0);
  </code></pre>
  
  <p>i wish to select the addresses between the points mentioned in query.</p>
  
  <p>I have checked syntax and as per syntax i have put values in query.Please let me know the correction.</p>