http://plsql-tutorial.com/plsql-procedures.htm What is PL/SQL? PL/SQL stands for Procedural Language extension of SQL. PL/SQL is a combination of SQL along with the procedural features of programming languages. A Simple PL/SQL Block: Each PL/SQL prog…
SQL is not very flexible and it cannot be made to react differently to differing sutuations easily. In SQL queries we normally tell database what we want but not tell it how to do it. SQL : give commands, commands complete with ; PL/SQL : follow the…
原文参考:http://plsql-tutorial.com/ 组成: 1) 异常类型 2) 错误码 3) 错误信息 代码结构: DECLARE Declaration section BEGIN Exception section EXCEPTION WHEN ex_name1 THEN -Error handling statements WHEN ex_name2 THEN -Error handling statements WHEN Others THEN -Error handl…
-----------------------------Cryking原创------------------------------ -----------------------转载请注明出处,谢谢!------------------------ 很多不了解oracle数据库的开发人员很喜欢用PL/SQL的函数.存储等来达到代码上的简洁. 如: SELECT EMPNO,ENAME,DNAME,LOC FROM EMP,DEPT WHERE EMP.DEPTNO=DEPT.DEPTNO;…