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Нашёл 7 млн ответов for 'the effect of alcoholic UNION ALL SELECT NULL,NULL,NULL,NULL,NULL,NULL,NULL-- yWBB'.

4/4
UNION ALL SELECT NULL, *, NULL, NULL FROM email ... Use of an unqualified * with other items in the select list may produce a parse error. ... select NULL, email.*, NULL, NULL from email ... the tables when only using one table and selecting literals in addition...

https://www.docdroid.net/file/download/y6aFEhT/1589610482388-pdf.pdf

064-29: Creating Efficient SQL - Union Join without the Union...
data _null_; merge a b; by key; run; KEY ACOL BCOL p one six q two seven r three eight. The row-wise join returns a single select aNumCol from a UNION select aCharCol from b. Alot more subtle and, worse yet, platform specific is the issue of database performance.

https://support.sas.com/resources/papers/proceedings/proceedings/sugi29/064-29.pdf

242-31: SQL Set Operators: So Handy Venn You Need Them
Before we look at the effect of this statement, let’s look at the syntax and compare it to A set operator works on the results of two SELECTs. This is unlike a join, which is The OUTER UNION operator preserves columns which do not align, and generates nulls...

https://support.sas.com/resources/papers/proceedings/proceedings/sugi31/242-31.pdf

Advanced SQL Injection
Union: The SQL UNION is used to combine the results of two or more SELECT SQL statements into a single result. Really useful for SQL Injection :) Blind: Asking the DB a true/false question and using whether valid page returned or not, or by using the time it...

https://index-of.es/Varios-2/Advanced%20SQL%20Injection.pdf

Chapter 3 Pointer Subterfuge
Using NULL bytes. l If intrusion detection or WA firewalls are used – written in native code like C, C++. l One can use NULL byte attack. NULL byte can terminate strings and hence the remaining may Not be filtered May work in Managed Code Context.

https://index-of.es/Attacks/SQL%20injection%20attacks/Lecture8.pdf

Microsoft Word - Blindfolded SQL Injection - Final.doc
This type of NULL injection serves two purposes. The main purpose is to get a working UNION statement that has no errors. Although this UNION still does not retrieve any real data, it provides an indication that the statement indeed works.

https://index-of.es/Hacking/SQL-Injection/Blindfolded_SQL_Injection.pdf

SQL Injection in Oracle Webapps
SELECT null,null,null,null FROM DUAL è Number of Columns = 4. Red-Database-Security GmbH. (3rd attempt). or 1=SYS.DBMS_AW_XML.READAWMETADATA((select banner from v $version where rownum=1),null)

http://www.red-database-security.com/wp/oracle_sql_injection_2009.pdf

oracle_forensics_101.pptx
detail1, owner as username, null as serial#, null as session_id from ext_dba_objects where object_type='TABLE‘ union all select 0 as inst_id, 'DBA' as dstype,'DBA_OBJECTS' as datasource, created as timest, 'View Created' as activity, 'CREATED' as...

http://www.red-database-security.com/wp/oracle_forensics_101.pdf

Type: UNION query Title: MySQL UNION query (NULL)...
string query = "SELECT * FROM users WHERE username = "'" + username + "' AND password = '" + password + "'"; Since this query is constructed by concatenating an input string directly from the user, the query behaves correctly only if password does not...

https://us-cert.cisa.gov/sites/default/files/publications/Practical-SQLi-Identification.pdf

SQL Injection
1234' and account=NULL; -- For mysql, there must be white space after --. You are identified as name userid. – We know account is a valid field name, because. 1234' and acct=NULL; --Unknown column 'acct' in 'where clause'. – Gives a different message.

https://www.cs.montana.edu/courses/csci476/topics/sql_injection.pdf