A join clause in the Structured Query Language (SQL) combines columns from one or more tables into a new table. The operation corresponds to a join operation...
42 KB (4,777 words) - 15:02, 30 July 2024
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) - 02:41, 24 July 2024
NoSQL (originally referring to "non-SQL" or "non-relational") is an approach to database design that focuses on providing a mechanism for storage and...
29 KB (2,404 words) - 22:55, 9 August 2024
Structured Query Language (SQL) (pronounced S-Q-L; historically "sequel") is a domain-specific language used to manage data, especially in a relational...
39 KB (3,757 words) - 12:24, 5 August 2024
computing: Join (relational algebra), a binary operation on tuples corresponding to the relation join of SQL Join (SQL), relational join, a binary operation...
2 KB (234 words) - 19:37, 30 July 2024
has always a set or replace semantics. Join in particular: Join (SQL) join (Unix) "E.1. Release 15". PostgreSQL Documentation. 13 October 2022. Archived...
10 KB (1,013 words) - 12:39, 31 March 2024
Transact-SQL (T-SQL) is Microsoft's and Sybase's proprietary extension to the SQL (Structured Query Language) used to interact with relational databases...
6 KB (704 words) - 10:07, 8 June 2023
SQL-92 was the third revision of the SQL database query language. Unlike SQL-89, it was a major revision of the standard. Aside from a few minor incompatibilities...
4 KB (415 words) - 18:30, 12 October 2023
operations in SQL is a type of operations which allow the results of multiple queries to be combined into a single result set. Set operators in SQL include...
8 KB (863 words) - 17:19, 20 July 2023
Microsoft SQL Server (Structured Query Language) is a proprietary relational database management system developed by Microsoft. As a database server,...
61 KB (7,116 words) - 21:09, 14 August 2024