Question

我有两张桌子：

CREATE TABLE EMPLOYEE (
EMPLOYEE_ID bigint NOT NULL AUTO_INCREMENT,
EMPLOYEE_NO VARCHAR(30),
EMPLOYEE_TYPE VARCHAR(20),
PRIMARY KEY(EMPLOYEE_ID)
);

CREATE TABLE EMP_DETAIL(
EMPLOYEE_ID BIGINT NOT NULL , 
INS_ID VARCHAR(20) , 
SALARY int,
PRIMARY KEY(EMPLOYEE_ID ,INS_ID),
FOREIGN KEY(EMPLOYEE_ID) REFERENCES EMPLOYEE(EMPLOYEE_ID)
);

我想在emp表和emp_detail表中插入一个值。如果员工已存在，则只在emp_details表中插入记录。

这是存储过程：

CREATE PROCEDURE INSERTEMP(
IN EMPLOYEE_NO VARCHAR(30),
IN EMPLOYEE_TYPE VARCHAR(20),
IN INS_ID VARCHAR(20),
IN SALARY INT
)
BEGIN 
DECLARE EMPLOYEE_ID BIGINT;
   SET @EMPLOYEE_ID= (SELECT IFNULL((SELECT EMPLOYEE_ID FROM EMPLOYEE WHERE EMPLOYEE_NO=EMPLOYEE_NO AND EMPLOYEE_TYPE=EMPLOYEE_TYPE) ,'0'));
   IF @EMPLOYEE_ID=0 THEN
   INSERT INTO EMPLOYEE (EMPLOYEE_NO ,EMPLOYEE_TYPE ) VALUES (EMPLOYEE_NO,EMPLOYEE_TYPE);
   SET @EMPLOYEE_ID=(SELECT LAST_INSERT_ID());
   END IF;
   INSERT INTO EMP_DETAIL(EMPLOYEE_ID,INS_ID,SALARY) VALUES (@EMPLOYEE_ID,INS_ID,SALARY);
END

如果我致电程序：

CALL INSERTEMP(100, 'PERM','AAA',100);

首先在emp表中执行它创建的id为1，如果在第二次执行它也插入新的id并且第三次失败。

有人可以帮忙吗？

MySQL存储过程插入或更新表

0 个答案: