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Нашёл 12 млн ответов for 'the effect of alcoholic UNION ALL SELECT NULL,NULL,NULL-- TBch'.

064-29: Creating Efficient SQL - Union Join without the Union...
SELECT col FROM a UNION SELECT col FROM b. data _null_; set a b; run; COL one two three six seven eight. The ambiguity whether to list table a or b first, before the UNION statement is a big hint that this query will perform sub-optimally at the database.

https://support.sas.com/resources/papers/proceedings/proceedings/sugi29/064-29.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. 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 OWASP Foundation
1'))) UNION ALL SELECT NULL, Concatenated SQL query# AND ((('RaNd' LIKE 'RaNd. The number of columns in the SELECT statement is fewer than the number of columns that you want to inject.

https://www.owasp.org/images/e/ed/SQLinjectionNotOnly.pdf

WE45
▸ abcd' UNION ALL SELECT NULL,(SELECT version())--. Let’s fetch the current db user. current_setting('password_encryption'))--. MORE SETTINGS. ▸ Extract Cong File: ▸ abcd' UNION ALL SELECT NULL,(SELECT.

https://www.owasp.org/images/8/86/Abhay_Boston_2017_World_Tour_Presentation.pdf

Advanced SQL Injection
2. Use NULL in UNION injections for most data type instead of trying to guess string, date, integer. >0 RAISERROR(''CreateObject %0X'', 14,1,@OLEResult) EXECUTE @OLEResult=sp_OAMethod @ShellID,''Run'',Null,''ping -n 8 127.0.0.1'',0,1IF...

https://repo.zenk-security.com/Techniques%20d.attaques%20%20.%20%20Failles/Advanced%20SQL%20Injection.pdf

SQL Injection Pocket Reference
• Error: AND(SELECT COUNT(*) FROM (SELECT 1 UNION SELECT null UNION SELECT !1)x GROUP BY CONCAT((SELECT table_name FROM information_schema.tables LIMIT 1),FLOOR(RAND(0)*2))).

https://repo.zenk-security.com/Techniques%20d.attaques%20%20.%20%20Failles/SQL_Injection_Pocket_Reference.pdf

Blindfolded
This type of NULL injection serves two purposes. The main purpose is to get a working UNION statement that has no errors. Once the NULL-based UNION statement works, it is a trivial process to identify the types of each column. In each iteration a single field is...

https://repo.zenk-security.com/Techniques%20d.attaques%20%20.%20%20Failles/SQL_Injection.pdf

Nulls Make Things Easier?
If employee.spouse is NULL, does it mean? ◮ The spouse’s name is unknown. ◮ The employee is not married and therefore (Please note that these comments and criticisms apply to any system that supports SQL-style NULLs, not just to SQL Server specically.)" …

https://momjian.us/main/writings/pgsql/nulls.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. Once the NULL-based UNION statement works, it is a trivial process to identify the types of each column. In each iteration a single field is...

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

A name for the null pointer: nullptr (revision
Two null pointer values of the same type shall compare equal. The conversion of a null pointer constant to a pointer to cv-qualified type is a single conver-sion, and not the sequence of a pointer conversion followed by a qualification conversion (conv.qual).

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