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security - Sql injection can someone explain this code... - Stack Overflow

stackoverflow.com

If field is not sanitized, and only if the number of the columns used in the UNION SELECT match with the columns of the query, most likely will appear the string 91351456272.9 somewhere in the page. That will be the confirmed for the attacker of a vulnerability in the page.

http://myapp.com/SubCategoryList.php?catid=999999.9+...

pastebin.com

$ta_sqlString = "SELECT * FROM categories WHERE catid=$catid"; $rs_getCatDetails = mysql_query($ta_sqlString)

Video Sharing Script 4.94 SQL Injection

khalil-shreateh.com

Type: UNION query Title: MySQL UNION query (NULL) - 26 columns Payload: http

Внедрение SQL-кода — Википедия

ru.wikipedia.org

1.3 Использование UNION + group_concat(). 1.4 Экранирование хвоста запроса. 1.5 Расщепление SQL-запроса.

combinatorics - How many numbers between $0$ and $999,999$ are...

math.stackexchange.com

*}. The exponents of the terms vary from $0$ which corresponds to the smallest sum of digits $r=0$ and the number $0$ up to $54$ which corresponds to the largest sum of digits $r=54$ and the number $999999$. We calculate the coefficient of $x^r$ of the generating series. In order to do so we use the...

Ask TOM "Getting multiple counts with a union"

asktom.oracle.com

A UNION returns a distinct combination. So if there are members of the second select which match members of the first select the count is going to be

Инструкция по использованию sqlmap. Ч.1: Основы работы (GET)

HackWare.ru

...id=-22+union+select+1,group_concat(user_name,0x3a,user_pwd),3,4,5,6,7,8,9,10+from+users

Шпаргалка по SQL инъекциям | DefconRU

defcon.ru

(M): SELECT CONCAT(login, password) FROM members. 7. Строки без кавычек Есть несколько

Использование EXPLAIN. Улучшение запросов / Хабр

habr.com

Давайте проанализируем вывод, чтобы познакомиться с информацией, возвращаемой командой. EXPLAIN SELECT * FROM categories.

UPDATE (Transact-SQL) - SQL Server | Microsoft Docs

docs.microsoft.com

Также может использоваться для присвоения значения NULL, если столбец не имеет значений по умолчанию и может принимать значения

Похожие запросы:

"><script >alert(string.fromcharcode(88,83,83))</script>|xss|[kz] kazakstan|08/18/2020 17:41:56|') and 1=1 union all select 1,null,'<script>alert("xss")</script>',table_name from information_schema.tables where 2>1--/**/; exec xp_cmdshell('cat ../../../et
"><script >alert(string.fromcharcode(88,83,83))</script>|xss|[kz] kazakstan|08/18/2020 17:41:56|') and 1=1 union all select 1,null,'<script>alert("xss")</script>',table_name from information_schema.tables where 2>1--/**/; exec xp_cmdshell('cat ../../../et
%u0431%u0438%u043f%u044d%u043a %u0430%u0432%u0442%u043e %u043a%u043e%u0441%u0442%u0430%u043d%u0430%u0439 %u0446%u0435%u043d%u044b and 6908=(select (case when (6908=2550) then 6908 else (select 2550 union select 3456) end))-- hbpi
%u0431%u0438%u043f%u044d%u043a %u0430%u0432%u0442%u043e %u043a%u043e%u0441%u0442%u0430%u043d%u0430%u0439 %u0446%u0435%u043d%u044b and 7992=(select (case when (7992=7992) then 7992 else (select 8669 union select 1998) end))-- alwt
%u0431%u0438%u043f%u044d%u043a %u0430%u0432%u0442%u043e %u043a%u043e%u0441%u0442%u0430%u043d%u0430%u0439 %u0446%u0435%u043d%u044b" and 3956=(select (case when (3956=2163) then 3956 else (select 2163 union select 4524) end))-- hzxq
%u0431%u0438%u043f%u044d%u043a %u0430%u0432%u0442%u043e %u043a%u043e%u0441%u0442%u0430%u043d%u0430%u0439 %u0446%u0435%u043d%u044b" and 7992=(select (case when (7992=7992) then 7992 else (select 8669 union select 1998) end))-- gyij
%u0431%u0438%u043f%u044d%u043a %u0430%u0432%u0442%u043e %u043a%u043e%u0441%u0442%u0430%u043d%u0430%u0439 %u0446%u0435%u043d%u044b") and 7992=(select (case when (7992=7992) then 7992 else (select 8669 union select 1998) end))-- wian
%u0431%u0438%u043f%u044d%u043a %u0430%u0432%u0442%u043e %u043a%u043e%u0441%u0442%u0430%u043d%u0430%u0439 %u0446%u0435%u043d%u044b") and 9729=(select (case when (9729=1260) then 9729 else (select 1260 union select 2140) end))-- gehw
%u0431%u0438%u043f%u044d%u043a %u0430%u0432%u0442%u043e %u043a%u043e%u0441%u0442%u0430%u043d%u0430%u0439 %u0446%u0435%u043d%u044b%' and 7992=(select (case when (7992=7992) then 7992 else (select 8669 union select 1998) end))-- hgjf
%u0431%u0438%u043f%u044d%u043a %u0430%u0432%u0442%u043e %u043a%u043e%u0441%u0442%u0430%u043d%u0430%u0439 %u0446%u0435%u043d%u044b%' and 9901=(select (case when (9901=7115) then 9901 else (select 7115 union select 6880) end))-- pffb

999999.9 /**/union/**/all/**/select/**/null,concat(0x71786b7171,0x4a6a59546d4d78685a4d4c49456c6a67794c767a56616d4a5a756d4a737371586b6a4d5a7a465744,0x71716a7871),null,null,null,null,null,null,null,null--/**/wfof/union/all /select /cast(0x39313335313435 на YouTube:

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