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Нашёл 7 млн ответов for 'Tafsir ibnue UNION ALL SELECT NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL-- HBRt'.

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

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

OWASPBostonv1
▸ abcd' UNION ALL SELECT NULL,(SELECT version())--. Let’s fetch the current db user. current_user variables and the getpgusername() function: ▸ abcd' UNION ALL SELECT NULL,(SELECT user)

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

1'))) UNION ALL SELECT NULL, Concatenated SQL query# AND...
ORDER BY clause brute-forcing NULL brute-forcing Sequential number brute-forcing. The number of columns in the SELECT statement is fewer SELECT: it goes blind or UNION query to retrieve the output DDL, DML, etc: it goes batched query to run it. Front Range OWASP Conference, Denver (USA).

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

Microsoft PowerPoint...
Comparisons Involving NULL and Three-Valued Logic. Meanings of NULL. Unknown value Unavailable or withheld value Not applicable attribute. Each individual NULL value considered to be different from every other NULL value SQL uses a three-valued logic: TRUE, FALSE, and UNKNOWN.

http://eecs.csuohio.edu/~sschung/cis430/Elmasri_6e_Ch05AddedAllSetDivision_Nov2016_2.pdf

242-31: SQL Set Operators: So Handy Venn You Need Them
Notice that “UNION” is inserted between two SELECTs (each of which has, as it must, a subordinate A set operator works on the results of two SELECTs. This is unlike a join, which is implemented The OUTER UNION operator preserves columns which do not align, and generates nulls (missing values)...

https://support.sas.com/resources/papers/proceedings/proceedings/sugi31/242-31.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.dc00800.1510/pdf/iqapgv2.pdf

Magnetoresistive Sensor ICs, Nanopower Series Product Datasheet
— Temperature error: Null drift Sensitivity drift. sensing.honeywell.com 3. Linear Hall-effect Sensor ICs. Figure 3. Peformance Graphics Null Shift vs Temperature.

https://sensing.honeywell.com/index.php?ci_id=50359

SQL Injection in Oracle Webapps
SELECT firstname, lastname FROM customers UNION SELECT username, null FROM ALL_USERS ORDER BY 1,2. The most common techniques are the usage of "ORDER BY" or adding NULL values to the second query. SELECT * FROM table UNION.

http://www.red-database-security.com/wp/oracle_sql_injection_2009.pdf