TTH Database Error

mySQL query error: SELECT name,id_catpd,id_product,image,masanpham,anh1,price,description,gia_cu,ma,gioi_thieu,normal_image,id_hangsx,giatot FROM product WHERE active='1' AND id_catpd IN(1,120,122,121,103,136,135,134,125,123,119,118,116,114,113,112,111,110,109,102,138,131,130,129,128,127,126) AND name<>'' ORDER BY thu_tu asc , id_product DESC LIMIT -20,20 mySQL error: 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 '-20,20' at line 1 mySQL error code: Date: Sunday 02nd 2022f October 2022 09:22:45 AM