云数据库RDS SQLServer版sql 的相关内容

文章 2023-04-19 来自：开发者社区

SQLServer 学习笔记之超详细基础SQL语句 Part 7

Sqlserver学习笔记-----------------------接Part 6-------------------29存储过程和触发器存储过程由一组预先编辑好的SQL语句组成。将其放在服务器上。由用户通过指定存储过程的名称来执行。触发器是一种特殊类型的存储过程，它不是由用户直接调用的，而是当用户对数据进行操作（包括数据的INSERT ,UPDATE,DELETE操作）时自动....

文章 2023-04-19 来自：开发者社区

SQLServer 学习笔记之超详细基础SQL语句 Part 6

Sqlserver学习笔记-----------------------接Part 5-------------------28聚合函数--求平均分SELECTAVG(高考分数)FROM std_table --求总和SELECTSUM(高考分数)FROM std_table --求最低分SELECTMIN(高考分数)FROM std_table --求最高分SEL....

文章 2023-04-19 来自：开发者社区

SQLServer 学习笔记之超详细基础SQL语句 Part 5

Sqlserver学习笔记-----------------------接Part 4-------------------21使用默认默认(也称默认值)，是一种数据对象，它与default（默认）约束的作用相同，也是当向表中插入数据时，没有为列输入值时，系统自动给列赋一个“默认值”。与default不同的是它类似规则，通过一次定义，可以多次使用 21.1创建默认在查询分析器中，创建默....

文章 2023-04-19 来自：开发者社区

SQLServer 学习笔记之超详细基础SQL语句 Part 4

Sqlserver学习笔记-----------------------接Part 3-------------------17带比较运算符的嵌套查询--查询学生表中出生日期大于名为小杰的出生日期的学生记录SELECT*FROM学生WHERE出生年月>(    SELECT出生年月FROM学生WHERE姓名='小杰') --查询学生表中出生日期大于名为小杰或小....

文章 2023-04-19 来自：开发者社区

SQLServer 学习笔记之超详细基础SQL语句 Part 3

Sqlserver学习笔记-----------------------接Part 2-------------------13.使用compute对查询结果集中的所有记录进行汇总统计，并显示所有参加汇总的记录的详细信息。格式：COMPUTE聚合函数[列名] --聚合函数,例如SUM(),AVG(),COUNT()等结合GROUP BY使用示例：SELECT*FROM std_tab....

文章 2023-04-19 来自：开发者社区

SQLServer 学习笔记之超详细基础SQL语句 Part 2

Sqlserver学习笔记-----------------------接Part 1-------------------建立如下数据表CREATETABLE std_table1( 学号 INTPRIMARYKEYIDENTITY, 姓名 CHAR(20)N....

文章 2023-04-19 来自：开发者社区

SQLServer 学习笔记之超详细基础SQL语句 Part 1

Sqlserver学习笔记 1创建数据库格式：CREATEDATABASEdatabase_name ONPRIMARY（在组文件组中指定文件）( name = ’数据库文件逻辑名’（在创建数据库后执行的T-SQL语句中引用文件的名称）, fileName = ’数据库文件物理文件名’（含有具体位置，即具体路径（即存储位置））, size ....

问答 2023-04-11 来自：开发者社区

看到自建SQL Server同步至AnalyticDB PostgreSQL，但是没有找到自建SQL

看到自建SQL Server同步至AnalyticDB PostgreSQL，但是没有找到自建SQL Server同步至AnalyticDB MySQL的帮助文档？

问答 2023-04-11 来自：开发者社区

支持自建SQL Server同步至PolarDB MySQL版，但是不支持自建SQL Server同

支持自建SQL Server同步至PolarDB MySQL版，但是不支持自建SQL Server同步至云原生数据仓库AnalyticDB MySQL版吗？这么奇怪？

文章 2023-04-10 来自：开发者社区

【SQL Server】数据库开发指南（三）面向数据分析的 T-SQL 编程技巧与实践

T-SQL 指的是 Transact-SQL，是一种针对 Microsoft SQL Server 数据库系统的 SQL 方言。T-SQL 扩展了标准 SQL 语言，提供了更多的功能和特性，包括事务处理、错误处理、游标处理、动态 SQL、存储过程、触发器、用户定义函数等等。@[toc]一、变量1.1 局部变量（Local Variable）T-SQL 中的局部变量是一种只能在当前作用域（存储过程....

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云数据库 RDS SQL Server 版

云数据库SQL Server，具有企业许可授权，权限更为开放，引擎功能更为强大。能完美支持Windows平台的.NET架构，支持复杂SQL查询，性能优秀，并有强大的可视化管理工具，帮助您轻松管理数据。

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