DECLARE @tablename VARCHAR(30),@sql VARCHAR(500)DECLARE
cur_delete_table CURSOR READ_ONLY FORWARD_ONLY FORSELECT name FROM
sysobjects WHERE name LIKE ‘PUB%‘ AND
type=‘U‘OPEN cur_delete_tableFETCH NEXT FROM cur_delete_table
INTO @tablenameWHILE @@FETCH_STATUS = 0BEGINSELECT @sql=‘delete
from ‘+@tablenameEXEC (@sql)FETCH NEXT FROM cur_delete_table INTO
@tablenameENDCLOSE cur_delete_tabl...
@UserId INTdeclare @PSANo VARCHAR(200)declare @ShipMode VARCHAR(10)declare @CY_FLAG VARCHAR(1)declare @PO VARCHAR(20)declare @BuyerName VARCHAR(100)declare @Destination VARCHAR(1)declare @FinalDestination VARCHAR(40)declare @Factory VARCHAR(10)declare @NoticeDateStart DATETIMEdeclare @NoticeDateEnd D...
浅谈SQL Server中的三种物理连接操作
Merge join、Hash join、Nested loop join对比分析版权声明：本文为博主原创文章，未经博主允许不得转载。SQL Server中的三种物理连接操作:嵌套循环连接、合并连接、哈希匹配标签：嵌套循环连接 合并连接 哈希匹配 sql server三种物理连接 本文系统来源：http://blog.csdn.net/ariczhou/article/details/46988613
alter PROCEDURE [dbo].[sp_gongzi] @gongzi_yf varchar(7) as DECLARE @input_id varchar(20)DECLARE @sk_sum decimal(18, 3)DECLARE @sk_sum_yk decimal(18, 3)BEGIN DECLARE cur_input CURSOR FOR select docno from tc_tab1 where yf = @gongzi_yf OPEN cur_input FETCH cur_input INTO @input_id WHILE @@FETCH_STATUS = 0 BEGIN set @sk_sum = 0 set @sk_sum_yk ...
@A1 VARCHAR(10),
@A2 VARCHAR(10),
@A3 INT
DECLARE YOUCURNAME CURSOR FOR SELECT A1,A2,A3 FROM YOUTABLENAME
OPEN YOUCURNAME
fetch next from youcurname into @a1,@a2,@a3
while @@fetch_status<>-1begin
--您要执行的操作写在这里
fetch next from youcurname into @a1,@a2,@a3
end
close youcurname
deallocate youcurname
再加上异常捕捉和事务，完整过程如下：Create PROCEDURE [dbo].[Usp_CreatePanicBuyingC...
很多人可能想要查询整个树形表关联的内容都会通过循环递归来查...事实上在微软在SQL2005或以上版本就能用别的语法进行查询，下面是示例。
--通过子节点查询父节点WITH
TREE AS(
SELECT * FROM Areas
WHERE id = 6 -- 要查询的子 id UNION ALL
SELECT Areas.* FROM Areas, TREE
WHERE TREE.PId = Areas.Id
)
SELECT Area FROM TREE
--通过父节点查询子节点WITH
TREE AS(
SELECT * FROM Areas ...
sql 经常用到循环，下面介绍一下普通循环和游标循环
1、首先需要一个测试表数据Student2、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 declare @a int,@e...
set @i=1
if @i<0
begin set @i=@i+1print @iend
else--循环语句
declare @i int
set @i=0
while @i<5
beginset @i= @i+1insert into grade(classname) values(@i)
end 20.SqlServer中if跟循环语句标签：log blog name sql insert declare 语句 while set 本文系统来源：http://www.cnblogs.com/justqi/p/5984135.html
SQLServer索引循环删除标签：stl begin check pen declare space class nbsp 索引 本文系统来源：http://www.cnblogs.com/mazey/p/6131450.html
pubs
Go
WHILE (SELECT AVG(price) FROM titles) < $30
BEGINUPDATE titlesSET price = price * 2SELECT MAX(price) FROM titlesIF (SELECT MAX(price) FROM titles) > $50BREAKELSECONTINUE
END------------------------------------------------------设置个变量，就能实现for（i=0;i<10,i++）
DECLARE @i int
set @i=0WHILE @i<10
BEGIN
//语句序列...set @i=@i+1
END使用go
goselect * from AYS_XZ_MEETINGROOM
go 200 sql ser...
drop table #tempselect name,IDENTITY(int,1,1) as idinto #tempfrom syscolumnswhere id =(select id from sysobjects where xtype=‘u‘ and name = ‘sheet‘)and name not in (‘F1‘)declare @i int,@totalcount intset @i=(select max(id) from #temp)select * from #tempdeclare @sql varchar(4000)declare @s_tablename varchar(20)declare @s_columnsnname varchar(20)create table test_20170822(f1 varchar(200),f2 fl...
由于工作原因，到目前为此已有一年多没有写SQL Server的储存过程了，已有些生疏。日前工作中有个表的数据需要定时更新，翻了一下以前写的储存过程，在此记录一下。
需求是这样的：
有两张表 1、博主表： Blogger ，2、博主对应的文章表： BlogForBlogger
文章表的数据由服务端定时获取，博主表有个字段保存博主文章的总数量，所以这个字段要定时去更新。
实现：创建一个储存过程，然后在数据库中开个作业定时去执行这个储存...
1、首先需要一个测试表数据Student2、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 declare @a int,@error int declare @temp varchar(50) set ...
begin declare @temp varchar(50) declare @error int set @error = 0declare @sysObjectId int set @sysObjectId = 167 declare @count int select @count=Count(UserId) from (select distinct UserID from HomeSort where UserID not in (select UserID from HomeSort where SysObjectID in (@sysObjectId))) as t print @countbegin tran -- 声明游标为UserID declare HomeSort_cursor cu...
INSERT INTO #countrySELECT ‘中国‘,‘中国‘,null union allSELECT ‘江苏‘,‘中国‘,null union allSELECT ‘南京‘,‘江苏‘,null union allSELECT ‘无锡‘,‘江苏‘,null union allSELECT ‘徐州‘,‘江苏‘,null union allSELECT ‘扬州‘,‘江苏‘,null union allSELECT ‘苏州‘,‘江苏‘,null union allSELECT ‘六合区‘,‘南京‘,null union allSELECT ‘江宁区‘,‘南京‘,null union allSELECT ‘浦口区‘,‘南京‘...
set @i=1
if @i<0
begin
set @i=@i+1
print @i
end
else