SQL函数简单示例

一.建立函数和数据表

CREATE OR REPLACE FUNCTION getXM(INT1 NUMBER)
Return Varchar2
IS
  ret Varchar2(36);
BEGIN
    ret := '';
    BEGIN
    SELECT XM Into ret From GRADUATE Where YINGYU = INT1;
    END;
    RETURN (ret);
END;

create table GRADUATE
(
  BH       NUMBER(10) not null,
  XM       VARCHAR2(10) not null,
  LB       VARCHAR2(10) not null,
  YINGYU   NUMBER(4,1) not null,
  ZHENGZHI NUMBER(4,1) not null,
  ZHUANYE1 NUMBER(4,1) not null,
  ZHUANYE2 NUMBER(4,1) not null,
  ZHUANYE3 NUMBER(4,1) not null
)

二.调用方法

Select getXM(55),xm From graduate