SQL 必知必会笔记19使用游标
游标（cursor）是一个存储在DBMS服务器上的数据库查询，它不是一条SELECT语句，而是被该语句检索出来的结果集。在存储了游标之后，应用程序可以根据需要滚动或浏览其中的数据。 使用游标 使用游标的步骤： 1. 创建游标 在SQL Server中使用DECLARE命名游标，
游标（cursor）是一个存储在DBMS服务器上的数据库查询，它不是一条SELECT语句，而是被该语句检索出来的结果集。在存储了游标之后，，应用程序可以根据需要滚动或浏览其中的数据。
使用游标使用游标的步骤：
1. 创建游标
在SQL Server中使用DECLARE命名游标，并定义相应的SELECT语句，根据需要带WHERE和其他子句,示例如下：
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