MySQL returned error

Error Description :

Error No : 1064
Description : You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'and slug='decornt-stall-at-tent-decor-amp-catering-india-exhibition-palace-gr...' at line 1

SQL Query
SELECT `category`.* FROM `category` WHERE id!=0 AND status='Active' and parentcategory_id= and slug='decornt-stall-at-tent-decor-amp-catering-india-exhibition-palace-ground-bangalore-on-8th-to-10th-july'