DDL commands --> create user / table / view / sequence alter DML --> data manipulation language (insert, select, update, delete) eg : SELECT ename FROM emp WHERE sal = (SELECT MAX(sal) FROM EMP); %type(single col), %rowtype(single row/record) cursor
PL/SQL 基础 ( 下 ) 1. PL/SQL中的 SQL语句 - END语句与COMMIT等内容,没有任何关系. - PL/SQL does not directly support data definition language( DDL ) statements, such as CREATE TA BLE, ALTER TABLE, or DROP TABLE. - PL/SQL does not support data control language( DCL ) sta
PL /SQL是一种高级数据库程序设计语言,该语言专门用于在各种环境下对ORACLE数据库进行访问.由于该语言集成于数据库服务器中,所以PL/SQL代码可以对数据进行快速高效的处理.PL/SQL是 Procedure Language & Structured Query Language 的缩写.ORACLE的SQL是支持ANSI(American national Standards Institute)和ISO92 (International Standards Organization