PL/SQL嵌入SQL语句

一、PL/SQL块中只能直接嵌入SELECT、DML(INSERT,UPDATE,DELETE)以及事务控制语句(COMMIT,ROLLBACK,SAVEPOINT),

而不能直接嵌入DDL语句(CREATE,ALTER,DROP)和DCL语句(GRANT,REVOKE)

1、嵌入SELECT语句

使用SELECT INTO语句时,必须要返回一条数据,并且只能返回一条数据。

v_ename emp.ename%type;

v_sal   emp.sal%type;

select ename,sal into v_ename,v_sal from emp where empno=&no;

2、嵌入insert子句。

v_deptno emp.deptno%type:=&no;

insert into employee select * from emp where deptno=v_deptno;

3、更新数据

v_ename emp.ename%type:='&name';

update emp set (sal,comm) = (select sal,comm from emp where ename=v_ename) where job = (select job from emp where ename=v_ename)

4、删除数据

v_ename emp.ename%type:='&name';

  delete from emp where deptno=(select deptno from emp where ename=v_ename);

巴特西

PL/SQL嵌入SQL语句

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