create table cdat
(
localt char(20) not null,
cd char(5) not null,
snosat char(2) not null,
rnorec char(3) not null,
id INT(20) not null auto0increment,
primary key (rnorec, snosat, id)
);这段sql问题在哪里呢?我要设置id为自增加,可是为什么不行呢