ORACLE开发：Oracle在PL/SQL中嵌入SQL语句
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;
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;
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)
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);
delete from emp where deptno=(select deptno from emp where ename=v_ename);
到此这篇关于ORACLE开发：ORACLE开发：ORACLE开发：Oracle在PL/SQL中嵌入SQL语句的文章就介绍到这了。希望对大家的学习有所帮助，也希望大家多多支持。
