update set name='1231' from xsb where sex= '女'
改为
update set from xsb name='1231' where sex= '女'
应该是:
update xsb set name='1231' where sex='女'
$updatesql="update set name='1231' from xsb where sex= '女' ";
改为
"update `数据库表名` set ·name·='1231' from xsb where ·sex·= '女' ";
把sql语句改为:
update xsb set name='1231' where sex='女';
这样你再试一下