PLSQL 开发
原文英文,约400词,阅读约需2分钟。发表于: 。BULK COLLECT and FORALL are both PL/SQL features designed to enhance performance by minimizing context switches between the SQL and PL/SQL engines. However, they serve different purposes: BULK...
BULK COLLECT在PL/SQL中用于一次性获取多行数据,减少引擎间的切换。FORALL用于批量执行DML操作。PL/SQL过程是执行任务的子程序,可接受参数。Cron作业是Unix系统上的定时任务。游标用于逐行处理查询结果,有隐式和显式两种。触发器是在特定事件时自动执行的存储过程。CTE用于定义临时结果集,简化查询。