Hi,<br><br>Hopefully this is trivial problem that someone can help me out with quickly. Am trying to use the BOX3D function within a stored procedure, using coordinate values passed in as parameters. The problem is I cannot figure out how to specify the box3d command using these parameters. I guess it has to do with variable expansion and the use of apostrophes, and I've played around a lot with these, but cannot get things to work. The code is as follows:<br>
<br>CREATE FUNCTION add_spatiotemporal_row(original_document_id_in int, north_in real, <br> south_in real, west_in real, east_in real, start_time_in timestamp, <br> end_time_in timestamp) RETURNS void AS <br>$$<br> DECLARE<br>
spatial_db_id integer := null;<br> temporal_db_id integer := null;<br> bbox varchar := west_in || ' ' || south_in || ', ' || east_in || ' ' || north_in;<br> BEGIN<br> -- This inserts a new row in the spatial data table, if required<br>
IF west_in is not null AND east_in is not null AND<br> north_in is not null AND south_in is not null THEN<br> INSERT INTO SPATIAL_DATA (spatial_data_id, geometry, create_date) VALUES <br> (DEFAULT, <br>
setsrid('BOX3D(west_in+" "+south_in+", "+east_in+" "+north_in)'::box3d,4326),<br> current_timestamp);<br><br> SELECT MAX(spatial_data_id) INTO spatial_db_id FROM SPATIAL_DATA;<br>
END IF;<br>...<br><br>- this produces the following error:<br><br>Error: database error <class 'pg.DatabaseError'> error 'ERROR: BOX3D parser - couldnt parse. It should look like: BOX3D(xmin ymin zmin,xmax ymax zmax) or BOX3D(xmin ymin,xmax ymax)<br>
CONTEXT: SQL statement "INSERT INTO SPATIAL_DATA (spatial_data_id, geometry, create_date) VALUES (DEFAULT, setsrid('BOX3D(west_in+" "+south_in+", "+east_in+" "+north_in)'::box3d,4326), current_timestamp)"<br>
PL/pgSQL function "add_spatiotemporal_row" line 9 at SQL statement<br><br>- if I swap the quotes and apostrophes around I get:<br><br>Error: database error <class 'pg.DatabaseError'> error 'ERROR: column "BOX3D(west_in+' '+south_in+', '+east_in+' '+north_in)" does not exist<br>
LINE 1: ..., geometry, create_date) VALUES (DEFAULT, setsrid("BOX3D(wes...<br> ^<br>QUERY: INSERT INTO SPATIAL_DATA (spatial_data_id, geometry, create_date) VALUES (DEFAULT, setsrid("BOX3D(west_in+' '+south_in+', '+east_in+' '+north_in)"::box3d,4326), current_timestamp)<br>
<br>- I get this error a lot if I try and reference the variables directly in the call to BOX3D.<br><br>Lastly, if I use the declared variable, bbox to create the box3d I get the following:<br><br>Error: database error <class 'pg.DatabaseError'> error 'ERROR: BOX3D parser - couldnt parse. It should look like: BOX3D(xmin ymin zmin,xmax ymax zmax) or BOX3D(xmin ymin,xmax ymax)<br>
CONTEXT: SQL statement "INSERT INTO SPATIAL_DATA (spatial_data_id, geometry, create_date) VALUES (DEFAULT, setsrid('BOX3D(bbox)'::box3d,4326), current_timestamp)"<br><br>If I could get the first and third example to expand out the passed in parameters then things would work - please could someone help me here - it's driving me crazy!<br>
<br>Thanks,<br><br>Calum.<br><br>