select p1.name, p1.place_id, p1.latitude, p1.longitude, sqrt(pow(69.1*(p1.latitude-51.89),2)+ pow(53*(abs(p1.longitude--0.43)),2)) as dist from places p1,subcategory s, placehascategory phc where p1.county_id= and p1.name != "Luton" and s.name="Inland Revenue" and phc.place_id=p1.place_id and phc.subcat_id=s.subcat_id order by dist limit 10

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'and p1.name != "Luton" and s.name="Inland Revenue" and phc.plac' at line 6
Error