Question

可能重复：
Autoincrement in Oracle

我在oracle中有一个表，我想让userid自动增加.. 一旦我通过使用序列使其自动递增并尝试使用过程插入到表中我将sample.seq_userid放入其中我如何插入用户ID？我必须在我的程序中声明它吗？

 PROCEDURE insertExample
  (
    name_in IN sample.name%TYPE,
    age_in IN sample.age%TYPE
  )
  IS

  BEGIN

    INSERT INTO sample
    (name, age)
    VALUES
    (name_in, age_in);

  END insertExample;

这是我的更新

PROCEDURE updateExample
  (
    userid_in IN sample.userid%TYPE,
    name_in IN sample.name%TYPE,
    age_in IN sample.age%TYPE
  )
  IS

  BEGIN

    UPDATE sample
       SET name = name_in,
           age = age_in
    WHERE userid = userid_in;


  END updateExample;

Answer 1

你需要一个序列：

create sequence seq_user_id start with 1 increment by 1;

和表格上的触发器

CREATE TRIGGER user_id_trg 
   BEFORE insert 
   ON sample 
   FOR EACH ROW
BEGIN
      SELECT seq_user_id.NEXTVAL INTO :new.user_id FROM dual;

END;
/

Oracle自动增量

1 个答案: