mysql: select LAST_INSERT_ID() as lastid
mssqlsever:
public int updatePara(String sql) {
int id = 0;
try {
st = con.createStatement();
if (st.executeUpdate(sql) == 1) {
rs = st.executeQuery("SELECT @@IDENTITY AS IDX_NO");
if (rs.next()) {
id = rs.getInt(1);
}
con.commit();
} else {
con.rollback();
}
} catch (Exception e) {
e.printStackTrace();
}
return id;
}
oracle:
$query="select seq_atable.currval from dual";
seq_atable.currval 的值只有在同一次会话中，发生seq_atable.nextval后有效：） 所以不会存在取错值的问题。
oracle创建触发器，不用管ID
使用序列+触发器实现自增，插入语句不需要管自增字段
如：create or replace trigger trg_atable before insert on atable for each row begin select seq_atable.nextval into :new.id from dual; end;
插入数据：
create or replace trigger TRG_SEO_ONLINE_PHOTO
before insert on SEO_ONLINE_PHOTO
for each row
begin
select SEQ_ONLINE_PHOTO.nextval into :new.ONPHOTO_ID from dual;
end;
posted on 2008-12-16 13:34
长春语林科技 阅读(665)
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