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Нашёл 15 млн ответов for 'the effect of alcoholic UNION ALL SELECT NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL-- mmxb'.

Advanced_SQL_InjectionV2
Union: The SQL UNION is used to combine the results of two or more SELECT SQL statements into a Notice that each SELECT statement within the UNION must have the same number of columns. Change the first part of the query to a null or negative value so we can see what field will echo data...

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

Go Secure Coding Practices
select * from data where id=-1 union select null,null,database()

https://owasp.org/www-pdf-archive/Owasp-171123063052.pdf

The Core Rule Set
All required headers are there: Host, Accept, User-Agent Host is not an IP address Content length a must for none GET/HEAD methods. Characters: Valid encoding Only printable for headers Printable and formatting for parameters Only NULL not allowed in international applications.

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

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

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

Using the Group Functions Questions
The condition should be 'WHERE comm IS NULL'. 16. Which of the following statements is true about the group functions? A. The MIN function can with the sub query having all the NOT NULL columns of a table D. A view that is created with the sub query having the pseudo column ROWNUM keyword.

https://www.tutorialspoint.com/sql_certificate/pdf/using_the_group_functions_questions.pdf

Microsoft Word - Blindfolded SQL Injection - Final.doc
This comes in the form of the NULL keyword in SQL. Unlike injection of static fields, which are of a specific type (such as a string or an integer), NULL can match any type. It is therefore possible to inject a UNION SELECT statement where all fields are null, and there should be no type mismatch errors.

https://www.imperva.com/docs/IMPERVA_HII_blind-sql-injection-attacks.pdf

Microsoft PowerPoint - PresentationCabot.pptx
§ Examples. null:OCLVoid ada.discount=null : Boolean branch42.address=null : Boolean 1/0=null Union of set and set2 Intersection of set and set2 Difference set; elements of set, which do § Select and Reject return subsets of collections – Iterate over the complete collection and collect elements.

http://www.sti.uniurb.it/events/sfm12mde/slides/cabot.pdf

A name for the null pointer: nullptr (revision
A null pointer constant is an integral constant expression (expr.const) rvalue of integer type that evaluates to zero. A null pointer constant can be converted to In particular: § Distinguishing between null and zero. The null pointer and an integer 0 cannot be distin-guished well for overload resolution.

http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2431.pdf

iGraph tutorial
## Vertex sequence: ## [1] 1 2 3 4 E(g, P=NULL, path=NULL, directed=TRUE) # edge sequences. Figure 4: Create a star graph with 8 edges. Next, assign random numbers between 1 and 50 to vertices and select vertices for which this value is less than 30, set the color of these vertices to green. g...

https://cs.hse.ru/data/2015/04/30/1098187988/1._tutorial_igraph.pdf