SQL DDL
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SQL 四大语言分类中DDL、DML、DCL、DQL的使用
目录一、DDL (Data Definition Language) 数据定义语言主要命令：二、DML (Data Manipulation Language) 数据操作语言主要命令：三、DQL (Data Query Language) 数据查询语言主要命令：四、DCL (Data Control Langua[详细]
2025-08-05 09:07 分类：数据库How determine File is Open in WIndow while writing file using Flex 3/AIR File Class
I want to update a file using FLex3/AIR File class. I know how to do this , but before writing(updating) to file i want to check if current file is open in the OS or some 开发者_运维百科other applicat[详细]
2022-12-29 05:56 分类：问答
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