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Нашёл 3 млн ответов for 'college strategies UNION ALL SELECT NULL,NULL,NULL,NULL,NULL-- ICKR'.

Programming the SQL Way with Common Table Expressions
SQL: SELECT ’Hello’ UNION ALL SELECT ’Hello’ UNION ALL SELECT ’Hello’ UNION ALL 1 The CTE column starts as col1, is renamed in the WITH clause as col2, and the outer SELECT renames it to ) SELECT * FROM source UNION ALL SELECT MIN(lanname), NULL FROM source; lanname...

https://momjian.us/main/writings/pgsql/cte.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. 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...

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

Exploiting Webapps using Oracle Databases
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

Microsoft Word - Blindfolded SQL Injection - Final.doc
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 tested for its type. All three types (number, integer, string) are tested for the field, one of them should work. This way, it takes up to three times the number of...

http://injection.rulezz.ru/Blindfolded_SQL_Injection.pdf

A Scalable Null Model for Directed Graphs
This serves as a good null model to compare algorithms or perform experimental studies. Furthermore, there are scalable algorithms that implement these models and they are invaluable in the study of graphs. However, networks in the real-world are often directed, and have a signicant proportion of...

https://arxiv.org/pdf/1210.5288

A scalable null model for
We propose a null model for directed graphs inspired by the Chung-Lu model that matches the in-, out-, and reciprocal-degree distributions of the real graphs. Our algorithm is scalable and requires O(m) random numbers to generate a graph with m edges. We perform a series of experiments on real...

https://arxiv.org/pdf/1210.5288v2.pdf

A Scalable Null Model for Directed Graphs
This serves as a good null model to compare algorithms or perform experimental studies. Furthermore, there are scalable algorithms that implement these models and they are invaluable in the study of graphs. However, networks in the real-world are often directed, and have a signicant proportion of...

https://arxiv.org/pdf/1210.5288v3.pdf

SQL: Queries, Programming, Triggers | Conceptual Evaluation Strategy
n Null values are allowed in all the domain types. To preclude null values declare attribute to be not null. n This strategy is not a super efficient way to compute a query! An optimizer will find more efficient strategies. to compute the same answers.

https://www.cs.ubc.ca/~laks/cpsc304/Unit06-SQL.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 | UNION ALL
When multiple SELECT queries are joined using UNION operator, Oracle displays the combined result from all the compounded SELECT queries,after removing all duplicates and in sorted order ascendingbydefault, without ignoring the NULL values.

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