It tell me sql error i try another table it can create only this table it have problen
CREATE TABLE presell (
id int(11) NOT NULL AUTO_INCREMENT,
refid int(150) NOT NULL,
productcode varchar(100) NOT NULL,
productname varchar(200) DEFAULT NULL,
qutiy int(11) NOT NULL,
price decimal(11,2) NOT NULL,
stockcut enum(‘n’,‘y’) NOT NULL DEFAULT ‘n’,
datecreate datetime DEFAULT NULL,
timestamp timestamp NULL DEFAULT NULL ON UPDATE CURRENT_TIMESTAMP,
order enum(‘y’,‘n’) NOT NULL DEFAULT ‘n’,
PRIMARY KEY (id),
UNIQUE KEY myIndex (refid,productcode) USING BTREE
) ENGINE=InnoDB AUTO_INCREMENT=4139 DEFAULT CHARSET=utf8;