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Нашёл 13 млн ответов for 'the effect of alcoholic UNION ALL SELECT NULL,NULL,NULL,NULL,NULL,NULL-- SPoU'.

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 to all the columns on that single...

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

064-29: Creating Efficient SQL - Union Join without the Union Clause
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 column 'col' instead with a 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

PowerPoint Presentation
from ds1 outer union corresponding select id. Terminology: A qseuteorypeornator cthoemFbRinOeMs tchlaeurseesuisltcsaollfetdwo oanr mino-lrineeqvuierwie.s. Check: obs with duplicate identifiers. select 'DS1' as DataSet,* from ds1 where id in (select id.

https://www.sas.com/content/dam/SAS/en_ca/User%20Group%20Presentations/TASS/bost_combine_data_sets.pdf

Advanced_SQL_InjectionV2
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 took for your valid page to return as the...

https://owasp.org/www-chapter-belgium/assets/2010/2010-06-16/Advanced_SQL_InjectionV2.pdf

OWASPBostonv1
▸ abcd' UNION ALL SELECT NULL,(SELECT version())--. Let’s fetch the current db user. ▸ Fetch all DB users and passwords: ▸ abcd' UNION ALL SELECT NULL,(SELECT. concat(usename,' : ',passwd) from pg_shadow)

https://owasp.org/www-pdf-archive/Abhay_Boston_2017_World_Tour_Presentation.pdf

OWASP Backend Security Project 1.0beta
This example examines the effects of a different malicious value passed to the query constructed and executed in Example 1. If an Consider the following snippet of code snippet 2. Connection connection = null; Statement statement = null; ResultSet resultSet = null; String username = req.getParameter...

https://owasp.org/www-pdf-archive/OWASP_Backend_Security_Project_1.0beta.pdf

iqapgv2.book
For the purpose of grouping, all NULL values are considered to be in the same group, even though NULL values are not equal to one another. The HAVING clause acts as a filter, much like the WHERE clause, on the results of the GROUP BY clause. Consider the semantics of a simple query...

http://infocenter.sybase.com/help/topic/com.sybase.infocenter.dc00800.1510/pdf/iqapgv2.pdf

iqapgv2.book
For the purpose of grouping, all NULL values are considered to be in the same group, even though NULL values are not equal to one another. 4 The resulting rows are grouped together based on distinct values of the expressions in the GROUP BY clause, treating NULL as a special value in each...

http://infocenter.sybase.com/help/topic/com.sybase.infocenter.dc00800.1520/pdf/iqapgv2.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' or 1=1 union select null from balances; -- The used SELECT statements have a different number of columns.

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

SQL - unions clause
The SQL UNION clause/operator is used to combine the results of two or more SELECT statements without returning any duplicate rows. To use UNION, each SELECT must have the same number of columns selected, the same number of column expressions, the same data type...

http://www.tutorialspoint.com/sql/pdf/sql-unions-clause.pdf