 | In SQL, null or NULL is a special marker used to indicate that a data value does not exist in the database. Introduced by the creator of the relational... 62 KB (7,601 words) - 13:07, 8 January 2024 |
certain sources of light Null (SQL) (or NULL), a special marker and keyword in SQL indicating that something has no value Null character, the zero-valued... 2 KB (288 words) - 06:15, 16 April 2024 |
"NUL" Null sign (∅), the empty set Null (SQL) (ω), a special marker and keyword NULL in SQL Empty string (λ, Λ, or ε), in formal language theory Null (disambiguation)... 413 bytes (90 words) - 17:53, 17 October 2020 |
 | department. These are the SQL statements to create the above tables: CREATE TABLE department( DepartmentID INT PRIMARY KEY NOT NULL, DepartmentName VARCHAR(20)... 41 KB (4,730 words) - 19:00, 26 February 2024 |
anything with Null directly, SQL provides two Null-specific comparison predicates: IS NULL and IS NOT NULL test whether data is or is not Null. SQL does not... 34 KB (3,925 words) - 22:19, 28 April 2024 |
Data definition language (redirect from Drop (SQL)) In the context of SQL, data definition or data description language (DDL) is a syntax for creating and modifying database objects such as tables, indices... 9 KB (961 words) - 23:22, 26 January 2023 |
reserved. SQL SQL syntax List of relational database management systems "Appendix C. SQL Key Words". PostgreSQL documentation. The PostgreSQL Global Development... 113 KB (159 words) - 11:04, 3 January 2024 |
concatenation, NULLs, and comparison case sensitivity vary from vendor to vendor. PostgreSQL and Mimer SQL strive for standards compliance, though PostgreSQL does... 39 KB (3,754 words) - 22:09, 28 April 2024 |
(T879–T882) Various smaller changes to the existing SQL language (all optional features): UNIQUE null treatment (F292) ORDER BY in grouped table (F868)... 4 KB (373 words) - 16:29, 16 April 2024 |
2008 SQL Server 2008 R2 SQL Server 2012 SQL Server 2014 SQL Server 2016 SQL Server 2017 SQL Server 2019 SQL Server 2022 From SQL Server 2016 onward, the... 61 KB (7,126 words) - 06:10, 27 April 2024 |