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...

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...

NoSQL (originally referring to "non-SQL" or "non-relational") is an approach to database design that focuses on providing a mechanism for storage and...

Structured Query Language (SQL) (pronounced S-Q-L; historically "sequel") is a domain-specific language used to manage data, especially in a relational...

computing: Join (relational algebra), a binary operation on tuples corresponding to the relation join of SQL Join (SQL), relational join, a binary operation...

has always a set or replace semantics. Join in particular: Join (SQL) join (Unix) "E.1. Release 15". PostgreSQL Documentation. 13 October 2022. Archived...

Transact-SQL (T-SQL) is Microsoft's and Sybase's proprietary extension to the SQL (Structured Query Language) used to interact with relational databases...

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...

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...

Microsoft SQL Server (Structured Query Language) is a proprietary relational database management system developed by Microsoft. As a database server,...