USE My_Database;DECLARE @name varchar(100) DECLARE authors_cursor CURSOR FOR Select [name] from sysobjects where xtype='u' order by id OPEN authors_cursor FETCH NEXT FROM authors_cursor INTO @name WHILE @@FETCH_STATUS = 0 BEGIN DBCC DBREINDEX (@n
SQL Server T-SQL高级查询 高级查询在数据库中用得是最频繁的,也是应用最广泛的. Ø 基本常用查询 --select select * from student; //查询student表中所有字段. --all 查询所有 select all sex from student; --distinct 过滤重复 select distinct sex from student; --count 统计 select count(*) from student; selec