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Нашёл 14 млн ответов for 'textbook advertising UNION ALL SELECT NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL-- EVaL'.

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 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

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

Implementing Marked Nulls in
A more general null concept is one of a marked null, where nulls are given identiers and two nulls with the same marker/identier are considered equal. This project implements marked nulls in the Postgres avour of SQL. The aims are twofold: rstly to allow us to represent more general results and secondly...

https://project-archive.inf.ed.ac.uk/msc/20161877/msc_proj.pdf

Inserting NULL values into a table and Selecting NULL values
select * from Employee1; -- Employee1 table does NOT have FK constraint superssn to PK ssn, so any value including NULL or ' ' will be accepted but NULL is taken as missing Insert Into Employee1 Values ('James', 'X', 'Brog1', '888660001','10-Nov-27','450 Stone, Houston, TX', 'M','55000', Null,'1')

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

Inserting NULL values into a table and Selecting NULL values
select * from Employee1; -- Employee1 table does NOT have FK constraint superssn to PK ssn, so any value including NULL or ' ' will be accepted but NULL is taken as missing Insert Into Employee1 Values ('James', 'X', 'Brog1', '888660001','10-Nov-27','450 Stone, Houston, TX', 'M','55000', Null,'1')

http://cis.csuohio.edu/~sschung/cis430/HandlingNULLvalues.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

tidyeval
rlang::call2(.fn, ..., .ns = NULL) Create a call from a function and a list. QUOSURES (and quoted exprs) rlang::eval_tidy(expr, data = NULL, env = caller_env()) Evaluate expr in env, using data as a data mask. Many tidyverse functions are quoting functions: e.g. filter, select, mutate, summarise, etc.

https://psych252.github.io/psych252book/figures/cheatsheets/tidyeval.pdf

Sharing Kernel Objects Across Process...
If ppszDestEnd is non-NULL, it points to the terminating '\0' character at the end of the string contained by the destination buffer. One or more of the Most applications simply pass NULL for this argument so that the object is created with a default security build based on the current process security token.

https://luuvanhoan.files.wordpress.com/2015/07/windows-via-c-c_5th-edition.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