目录1、create sequence seq_userinfo2、increment by ctzpXdcp; 13、start with 14、nomaxvalue5、nominvallue6、cache 20总结sequence是oracle中的序列，可以实现字段的自增或自减效果
I have a page_x.php which is nothing special. I also have a page_y.php with a form containing a dropdown field.
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