摘要:
create table test1111( id number(10) primary key, username varchar2(100) ); create sequence myseq; select myseq.nextval from dual select myseq.currval 阅读全文
摘要:
008-SQL分类、数据类型、序列 分类: 1、DDL(定义语句)create,alter,drop 不需要commit 2、DML(操纵语句) Insert ,update,delete Select ....for update 阅读全文