第9章 t sql程序设计

第 9 章 Transact-SQL 程序设计

第 9 章 Transact-SQL 编程 ,[object Object],[object Object],[object Object]

了解 Transact-SQL 编程语言 ,[object Object],[object Object],[object Object],[object Object]

变量 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],变量

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],变量

注释语句 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

输出语句 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

定义语句块语句 ,[object Object],[object Object],[object Object],[object Object],[object Object]

设计程序—流程控制语句 ,[object Object],[object Object],[object Object],[object Object],[object Object]

选择结构 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],选择结构

循环结构 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],循环结构

转移语句 ,[object Object],[object Object],[object Object],[object Object],[object Object]

例 9-11 求 10 的阶乘。 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

等待语句 ,[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],等待语句

返回语句 ,[object Object],[object Object],[object Object],[object Object]

分行处理程序—游标 ,[object Object]

游标概述 ,[object Object],[object Object],[object Object],[object Object]

1. Transact-SQL 游标 ,[object Object]

2. API 游标 ,[object Object]

3. 客户游标 ,[object Object]

使用游标 ,[object Object],[object Object],[object Object],[object Object],[object Object]

1. 声明游标 ,[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],1. 声明游标

2. 声明游标变量 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

3. 打开游标 ,[object Object],[object Object],[object Object],[object Object]

4. 读取游标中的数据 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

@@fetch_status 变量所读取的数据已经不存在。 -2 FETCH 命令失败或者行数据己超出了结果集 -1 FETCH 命令已成功执行 0 描述返回值

5. 关闭游标 ,[object Object],[object Object]

(1) 使用 CLOSE 命令关闭游标 ,[object Object],[object Object],[object Object],[object Object]

(2) 自动关闭游标 ,[object Object],[object Object],[object Object]

6. 释放游标 ,[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],6. 释放游标

游标应用实例 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],游标应用实例

课堂练习 Transact-SQL 语言编程 ,[object Object],[object Object],[object Object]

第9章 t sql程序设计

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第9章 t sql程序设计