登录 注册
当前位置:主页 > 资源下载 > SQL语言基础-连接的类型

SQL语言基础-连接的类型

  • 更新:2024-07-07 11:19:56
  • 大小:5.26MB
  • 推荐:★★★★★
  • 来源:网友上传分享
  • 类别:Informix - 数据库
  • 格式:PPT

资源介绍

连接的类型 * 等连接 非等连接 外连接 自连接 * Types of Joins There are two main types of join conditions: Equijoins Non-equijoins Additional join methods include the following: Outer joins Self joins Set operators Note: Set operators are not covered in this course. They are covered in another SQL course. Instructor Note Do not get into details of all the types of joins. Explain each join one by one as is done in the following slides.