<sql id="Example_Where_Clause" > <!-- WARNING - @mbggenerated This element is automatically generated by MyBatis Generator, do not modify. This element was generated :: CST . --> <where > <foreach collection="oredCriter
DECLARE @tempId NVARCHAR(Max), @tempIDD uniqueidentifier WHILE EXISTS ( SELECT UserId FROM Users Group By UserId having (count(*))>1 ) BEGIN SELECT TOP 1 @tempId = UserId FROM (SELECT UserId FROM Users Group By UserId having (count(*))>1 ) #cc Selec
1.首先需要一个测试表数据Student 2.普通循环 1)循环5次来修改学生表信息 --循环遍历修改记录--declare @i int set @i=0while @i<5begin update Student set demo = @i+5 where Uid=@i set @i=@i +1 end--查看结果--select * from Student 2)执行后的查询结果 3.游标循环(没有事务) 1)根据学生表实际数据循环修改信息---游标循环遍历--begin
有时候需要从集合中取出特定的成员但是又不能执行遍历操作,这个时候就可以使用 GENERATE 函数来解决这个问题. 根据地区查询每年的销售额 - SELECT NON EMPTY { , NON EMPTY { FROM [Adventure Works] 现在需要查询每年销售额最高的那个月在各个地区的销售情况. WITH SET [Best month per year] AS Generate( [Date].[Calendar].[Calendar Year].MEMBERS, TopCo
Sql语句,循环遍历生成区间5~20的随机数语句如下: are @i int DECLARE @Result INT DECLARE @Upper INT DECLARE @Lower INT ) ) SELECT @Result begin insert into master.dbo.test_1(num) ) ) end
using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace ConsoleApplication1 { class Program { static void Main(string[] args) { //声明数组. 第一种方法. 声明并分配元素大小. int[] Myint = new int[30]; Myint[0] = 30; Myint[1] = 50;