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

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

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

3/3
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/CxZkaO0/1590346252404-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

incompl.dvi
• Often ruled out: not null in SQL. • Essential when one integrates/exchanges data. • Perhaps the most poorly designed and the most often criticized part of. • Null is used if we don’t have a value for a given attribute. • What could null possibly mean? ◦ Value exists, but is unknown at the moment. ◦...

https://homepages.inf.ed.ac.uk/libkin/teach/dataintegr15/incompl.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

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

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

SQL Injection in Oracle Webapps
SELECT null,null,null,null FROM DUAL è Number of Columns = 4. Red-Database-Security GmbH. 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

newSQL.key | S.sname Sailors S EXISTS ( SELECT
NULLS in SQL. • Whenever we don’t have a value, we can put a NULL • Can mean many things: – Value does not exists – Value exists but is unknown – Value not • The schema specifies for each attribute whether it can be null (nullable attribute). • How does SQL cope with tables that have NULLs ?

http://avid.cs.umass.edu/courses/645/s2008/slides/03-SQL-2.pdf