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...

A relational database management system uses SQL MERGE (also called upsert) statements to INSERT new records or UPDATE or DELETE existing records depending...

Structured Query Language (SQL) (pronounced /ˌɛsˌkjuˈɛl/ S-Q-L; or alternatively as /ˈsiːkwəl/ "sequel") is a domain-specific language used to manage...

corresponding to the relation join of SQL Join (SQL), relational join, a binary operation on SQL and relational database tables join (Unix), a Unix command similar...

NoSQL (originally meaning "Not only SQL" or "non-relational") refers to a type of database design that stores and retrieves data differently from the...

SQL:2023 or ISO/IEC 9075:2023 (under the general title "Information technology – Database languages – SQL") is the ninth edition of the ISO (1987) and...

Microsoft SQL Server is a proprietary relational database management system developed by Microsoft using Structured Query Language (SQL, often pronounced...

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

The SQL SELECT statement returns a result set of rows, from one or more tables. A SELECT statement retrieves zero or more rows from one or more database...

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...

database management system (RDBMS) emphasizing extensibility and SQL compliance. PostgreSQL features transactions with atomicity, consistency, isolation,...

collection of native Win32 ports of common GNU Unix-like utilities. Textutils Join (SQL) Relational algebra List of Unix commands printf – Shell and Utilities...

SQL-92 (also called SQL 2) was the third revision of the SQL database query language. Unlike SQL-89, it was a major revision of the standard. Aside from...

The history of Microsoft SQL Server begins with the first Microsoft SQL Server database product – SQL Server v1.0, a 16-bit relational database for the...

Therefore, an ORDER BY clause in the view definition is meaningless; the SQL standard (SQL:2003) does not allow an ORDER BY clause in the subquery of a CREATE...

The syntax of the SQL programming language is defined and maintained by ISO/IEC SC 32 as part of ISO/IEC 9075. This standard is not freely available....

reserved. SQL SQL syntax List of relational database management systems Page listing all reserved words in the SQL standard, from SQL-92 to SQL:2016: Standard...

procedures, and SQL Server constraints. The views and stored procedures can significantly reduce the network traffic for multi-table joins. SQL Server supports...

A HAVING clause in SQL specifies that an SQL SELECT statement must only return rows where aggregate values meet the specified conditions.: 125–127  HAVING...

by their common attributes. MySQL's approximation of a natural join is the Inner join operator. In SQL, an INNER JOIN prevents a cartesian product from...

them into a single iterator. Merge (revision control) Join (relational algebra) Join (SQL) Join (Unix) Skiena, Steven (2010). The Algorithm Design Manual...

databases, particularly query languages for such databases, chief among which is SQL. Relational databases store tabular data represented as relations. Queries...

An SQL UPDATE statement changes the data of one or more records in a table. Either all the rows can be updated, or a subset may be chosen using a condition...

sub-language" grounded in first-order logic. An example of such a language is SQL, though it is one that Codd regarded as seriously flawed. The objectives...

extends the language by the addition of query expressions, which are akin to SQL statements, and can be used to conveniently extract and process data from...

Ingres Database (/ɪŋˈɡrɛs/ ing-GRESS) is a proprietary SQL relational database management system intended to support large commercial and government applications...

filings, and personnel records. NoSQL databases are often very fast, do not require fixed table schemas, avoid join operations by storing denormalized...

MySQL Cluster , also known as MySQL Ndb Cluster is a technology providing shared-nothing clustering and auto-sharding for the MySQL database management...

partitioned JOIN tables, support for various XQuery regular expression/pattern-matching features, and enhancements to derived column names. The SQL standards...