select * from boka_bookresource where productid='899' and classid='2' and moderate=1
An error was encountered
数据库错误 error in file "/product.php"
错误信息1064: 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 ''1553533148','178','')' at line 1

insert into boka_history (module,value,moduleid,uid,dateline,classid,sessionkey) values('product','数学(基础模块)上册',899,,'1553533148','178','')