SQL Server数据库操作教程与实例

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本篇文档是一份SQL Server数据库操作手册,主要涵盖了以下几个关键知识点: 1. **数据表创建与删除**: - `DROPTABLE dw;` 这条命令用于删除名为`dw`的表,这在数据库设计或清理过程中可能用于移除不再需要的表结构。 - `CREATE TABLE dw (id INT, xuehao VARCHAR(20), name VARCHAR(20), xingbie VARCHAR(20), age INT, banjivARCHAR(20), score FLOAT);` 这个语句创建了一个名为`dw`的表,包含了字段如学号(xuehao)、姓名(name)等,用于存储学生的基本信息。 2. **数据插入**: - 使用`INSERT INTO dw`语句向`dw`表中插入了五条学生记录,包括学号、姓名、性别、年龄、班级和分数等信息。这些操作展示了如何添加新的数据行到数据库中。 3. **数据更新**: - `UPDATE dw SET name = 'xiaohui' WHERE age = 20;` 这条语句更新了年龄为20岁的学生的姓名为"xiaohui",说明了如何对表中的数据进行修改。 4. **视图创建与删除**: - `CREATE VIEW dw_view AS SELECT * FROM dw;` 创建了一个名为`dw_view`的视图,它显示dw表中的所有列,视图通常用于简化查询结果或者提供特定的角度查看数据。 - `DROP VIEW dw_view;` 删除了先前创建的视图,说明了视图管理在数据库设计中的灵活性。 5. **索引创建与删除**: - `CREATE INDEX dw_index ON dw (id);` 在`id`字段上创建了一个索引,提高了查询速度,尤其是在查找特定id时。 - `DROP INDEX dw_index ON dw;` 删除了之前创建的`id`索引,这在调整表结构或优化性能时可能用到。 6. **触发器管理**: - `IF (object_id('tgr_classes_insert', 'tr') IS NOT NULL)` 检查是否存在名为`tgr_classes_insert`的触发器。 - `DROP TRIGGER tgr_classes_insert;` 如果存在,删除该触发器。 - `CREATE TRIGGER tgr_classes_insert` 创建了一个名为`tgr_classes_insert`的触发器,当`dw`表发生插入操作时自动执行,用于处理可能的业务逻辑,比如在此例中可能是插入后更新某些临时变量。 以上就是从给出的部分内容中提取的关于SQL Server数据库操作的关键知识点,涵盖了表的管理、数据插入、视图和索引的创建与删除以及触发器的使用。这些操作是数据库管理员和开发人员日常工作中常见的任务,对于维护和优化数据库性能至关重要。
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pl/sql 7.1操作手册,中文,总共239页 目录 目录.............................................................................................................................................................3 1. 介绍.....................................................................................................................................................9 2. 安装...................................................................................................................................................13 2.1 系统需求......................................................13 2.2 工作站安装....................................................13 2.3 基于服务器安装................................................13 2.4 脚本安装......................................................14 2.5 卸载 PL/SQL DEVELOPER...........................................14 3. 编写程序...........................................................................................................................................15 3.1 创建程序......................................................15 3.2 保存程序......................................................16 3.3 修改程序......................................................17 3.4 编译程序......................................................17 3.5 置换变量......................................................18 4. 测试程序...........................................................................................................................................19 4.1 创建测试脚本..................................................19 4.2 运行测试脚本..................................................20 4.3 变量类型......................................................21 4.4 保存测试脚本..................................................22 4.5 跟踪运行时间错误..............................................23 4.6 包声明和 JAVA 会话声明.........................................23 4.7 查看结果集....................................................24 4.8 查看 DBMS_OUTPUT................................................24 4.9 查看 HTP 输出.................................................24 4.10 调试..........................................................24 4.11 跟踪运行......................................................28 4.12 回归测试......................................................29 5. 优化...................................................................................................................................................30 5.1 使用解释计划窗口..............................................30 5.2 自动统计......................................................31 5.3 PL/SQL 概览图...................................................32 5.4 SQL 跟踪........................................................33 6. 专用 SQL...........................................................................................................................................35 6.1 使用 SQL 窗口.................................................35 6.2 结果表格处理..................................................36 6.3 实例模式查询..................................................40 6.4 连接查询......................................................41 6.5 置换变量......................................................42 4 PL/SQL Developer 7.0 用户指南 6.6 更新数据库....................................................43 6.7 查看和编辑 XMLTYPE 列..........................................44 6.8 直接查询导出..................................................44 6.9 保存 SQL 脚本..................................................44 6.10 创建标准查询..................................................45 7. 命令窗口...........................................................................................................................................46 7.1 输入 SQL 语句和命令............................................46 7.2 开发命令文件..................................................47 7.3 支持命令......................................................48 8. 创建与修改非 PL/SQL 对象............................................................................................................51 8.1 表定义编辑器..................................................51 8.2 序列定义编辑器................................................63 8.3 同义词定义编辑器..............................................63 8.4 库定义编辑器..................................................64 8.5 目录定义编辑器................................................64 8.6 作业定义编辑器................................................65 8.7 队列定义编辑器................................................65 8.8 队列表定义编辑器..............................................66 8.9 用户定义编辑器................................................67 8.10 角色定义编辑器................................................70 8.11 概要文件定义编辑器............................................71 8.12 数据库连接定义编辑器..........................................71 9. 图表...................................................................................................................................................72 9.1 创建图表......................................................72 9.2 保存和打开图表文件............................................75 9.3 更新图表......................................................75 10. 报告...................................................................................................................................................76 10.1 标准报告......................................................76 10.2 定制报告......................................................77 10.3 变量..........................................................78 10.4 精制版面......................................................83 10.5 风格库........................................................90 10.6 选项..........................................................91 10.7 报告菜单......................................................93 11. 图形...................................................................................................................................................94 12. 工程...................................................................................................................................................97 12.1 创建一个新工程................................................97 12.2 保存工程......................................................98 12.3 添加文件到工程................................................98 12.4 添加数据库对象到工程..........................................98 PL/SQL Developer 7.0 用户指南 5 12.5 用工程项目工作................................................99 12.6 编译工程......................................................99 13. 任务项目.........................................................................................................................................101 13.1 创建任务项目.................................................102 13.2 编辑任务项目.................................................102 13.3 关闭任务项目.................................................103 13.4 删除任务项目.................................................103 14. 窗口、数据库会话和事务.............................................................................................................104 14.1 会话模式.....................................................104 14.2 运行于多路会话或双路会话模式.................................104 15. 浏览对象.........................................................................................................................................105 15.1 使用浏览器...................................................105 15.2 浏览器过滤器.................................................110 15.3 浏览器文件夹.................................................111 16. 首选项.............................................................................................................................................114 16.1 ORACLE - 连接.................................................115 16.2 ORACLE - 选项.................................................116 16.3 ORACLE - 调试器...............................................117 16.4 ORACLE - 输出.................................................118 16.5 ORACLE - 跟踪.................................................119 16.6 ORACLE - 概览图...............................................119 16.7 ORACLE - 登录历史.............................................121 16.8 ORACLE - 提示.................................................122 16.9 用户界面 - 选项.............................................124 16.10 用户界面 - 工具栏...........................................125 16.11 用户界面 - 浏览器...........................................126 16.12 用户界面 - 编辑器...........................................127 16.13 用户界面 - 字体.............................................129 16.14 用户界面 - 代码助手.........................................130 16.15 用户界面 - 键配置...........................................131 16.16 用户界面 - 外观.............................................132 16.17 用户界面 - 日期/时间........................................133 16.18 窗口类型 - 程序窗口.........................................134 16.19 窗口类型 - SQL 窗口.........................................136 16.20 窗口类型 - 测试窗口.........................................138 16.21 窗口类型 - 计划窗口.........................................138 16.22 工具 - 差异.................................................139 16.23 工具 - 数据生成器...........................................139 16.24 工具 - 任务列表.............................................140 16.25 工具 - 重新调用声明.........................................140 6 PL/SQL Developer 7.0 用户指南 16.26 文件 - 目录..................................................141 16.27 文件 - 扩展名................................................142 16.28 文件 - 格式..................................................143 16.29 文件 - 备份..................................................144 16.30 文件 - HTML/XML..............................................145 16.31 其它 - 打印..................................................146 16.32 其它 - 更新与消息............................................147 16.33 首选项集.....................................................148 17. 工具................................................................................................................................................150 17.1 浏览器.......................................................150 17.2 查找数据库对象...............................................151 17.3 编译无效对象.................................................152 17.4 导出表.......................................................153 17.5 导入表.......................................................156 17.6 导出用户对象.................................................158 17.7 文本导入器...................................................159 17.8 ODBC 导入器..................................................163 17.9 数据生成器...................................................165 17.10 比较用户对象.................................................169 17.11 比较表数据...................................................171 17.12 事件监视器...................................................173 17.13 会话.........................................................174 17.14 自定义工具...................................................176 17.15 测试管理器...................................................181 18. 编辑器............................................................................................................................................185 18.1 选择功能.....................................................185 18.2 列选择.......................................................185 18.3 指引线.......................................................186 18.4 代码助手.....................................................186 18.5 重新调用语句.................................................187 18.6 专用复制.....................................................188 18.7 前后关系敏感帮助.............................................189 18.8 数据库对象弹出式菜单.........................................189 18.9 解释计划.....................................................189 18.10 宏...........................................................189 18.11 书签.........................................................191 18.12 颜色标记.....................................................191 18.13 代码目录.....................................................192 18.14 代码层次.....................................................193 18.15 超链接导航...................................................193 18.16 导航按钮.....................................................194 PL/SQL Developer 7.0 用户指南 7 18.17 重构.........................................................194 18.18 搜索栏.......................................................195 19. 大数据编辑器.................................................................................................................................197 19.1 编辑纯文本...................................................198 19.2 编辑 RTF.....................................................198 19.3 编辑 XML.....................................................199 19.4 编辑图象.....................................................200 19.5 编辑十六进制数据.............................................200 19.6 调用外部查看器或编辑器.......................................202 20. 查询设计器.....................................................................................................................................204 20.1 创建新的 SELECT 语句...........................................204 20.2 修改现有的 SELECT 语句.........................................208 20.3 处理查询定义.................................................208 20.4 查询设计器首选项.............................................209 20.5 查询设计器插件...............................................210 21. PL/SQL 美化器...............................................................................................................................211 21.1 定义选项.....................................................211 21.2 定义规则.....................................................212 21.3 使用美化器...................................................213 22. 模板.................................................................................................................................................214 22.1 模板窗口.....................................................214 22.2 使用模板.....................................................215 22.3 创建和修改模板...............................................216 23. 窗口列表.........................................................................................................................................221 24. 可停放和浮动的工具.....................................................................................................................222 25. 授权.................................................................................................................................................223 25.1 启用授权.....................................................223 25.2 定义授权.....................................................224 25.3 停用授权.....................................................225 26. ORACLE 文件系统 (OFS)...............................................................................................................226 26.1 OFS 管理器...................................................226 26.2 OFS 用法.....................................................228 27. 帮助系统.........................................................................................................................................230 27.1 MS 帮助文件..................................................230 27.2 HTML 手册....................................................230 28. 定制.................................................................................................................................................234 28.1 首选项.......................................................234 28.2 窗口版面.....................................................234 28.3 在线文档.....................................................234 8 PL/SQL Developer 7.0 用户指南 28.4 命令行参数...................................................236 28.5 SQL、PL/SQL、命令、JAVA 和 XML 关键词.........................238 28.6 插件.........................................................238