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Нашёл 2 млн ответов for 'Tafsir ibnue UNION ALL SELECT NULL,NULL,NULL,NULL,NULL,NULL,NULL-- xBwr'.

Advanced_SQL_InjectionV2
All queries in an SQL statement containing a UNION operator must have an equal number of expressions in their target lists. Change the first part of the query to a null or negative value so we can see what field will echo data back to us.

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

The Core Rule Set
Valid encoding Only printable for headers Printable and formatting for parameters Only NULL not allowed in international applications. Requires minimal tweaking. Exceptions for automated software used by the application.

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

4/4
UNION SELECT NULL,NULL,NULL-- etc. If the number of nulls does not match the number of columns, the database returns an error, such as: All 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...

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

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. Another purpose of this empty UNION is to get a 100...

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

Java Security.key | ‘; "select * from employees where last_name = '';'"
Type: UNION query Title: MySQL UNION query (NULL) - 6 columns Payload: name=Baaz' UNION ALL SELECT NULL,NULL,NULL,NULL,CONCAT(0x717a6b6471,0x4f6145586b4a6e436d71 | NULL.

https://s3.amazonaws.com/cmj-presentations/hacking-rwx-2017/Hacking_and_Hardening_Java_Web_Applications.pdf

Java Security.key | ‘; "select * from employees where last_name = '';'"
Type: UNION query Title: MySQL UNION query (NULL) - 6 columns Payload: name=Baaz' UNION ALL SELECT NULL,NULL,NULL,NULL,CONCAT(0x717a6b6471,0x4f6145586b4a6e436d71 | NULL.

https://s3.amazonaws.com/cmj-presentations/hacking-devoxx-2017/Hacking+and+Hardening+Java+Web+Applications.pdf

Java Security.key | ‘; "select * from employees where last_name = '';'"
Type: UNION query Title: MySQL UNION query (NULL) - 6 columns Payload: name=Baaz' UNION ALL SELECT NULL,NULL,NULL,NULL,CONCAT(0x717a6b6471,0x4f6145586b4a6e436d71 | NULL.

https://s3.amazonaws.com/cmj-presentations/hacking-uberconf-2017/Hacking+and+Hardening+Java+Web+Applications.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 Set Operators Questions
B. It returns duplicate values ignoring NULL values C. It returns duplicate values including NULL values D. It eliminates duplicate values and does not ignore A. It throws an error as TO_CHAR NULL cannot be used B. It executes successfully and gives the values for employees' id, first_name and current job.

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