An ORDER BY clause in SQL specifies that a SQL SELECT statement returns a result set with the rows being sorted by the values of one or more columns....

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

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...

In computing, SQL injection is a code injection technique used to attack data-driven applications, in which malicious SQL statements are inserted into...

Various smaller changes to the existing SQL language (all optional features): UNIQUE null treatment (F292) ORDER BY in grouped table (F868) GREATEST and...

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

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....

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...

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

In SQL, a window function or analytic function is a function which uses values from one or multiple rows to return a value for each row. (This contrasts...

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...

ordered — by definition — neither are the rows of a view. Therefore, an ORDER BY clause in the view definition is meaningless; the SQL standard (SQL:2003)...

NewSQL is a class of relational database management systems that seek to provide the scalability of NoSQL systems for online transaction processing (OLTP)...

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,...

standard SQL:1999 hierarchical queries are implemented by way of recursive common table expressions (CTEs). Unlike Oracle's earlier connect-by clause,...

An SQL INSERT statement adds one or more records to any single table in a relational database. Insert statements have the following form: INSERT INTO...

majority use SQL for writing and querying data. In the 2000s, non-relational databases became popular, collectively referred to as NoSQL, because they...

The SQL:1999 standard introduced a number of object–relational database features into SQL, chiefly among them structured user-defined types, usually called...

Framework 3.5 in 2007. LINQ extends the language by the addition of query expressions, which are akin to SQL statements, and can be used to conveniently extract...

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...

managing content in databases. It natively supports MySQL, MariaDB, PostgreSQL, SQLite, MS SQL, Oracle, Elasticsearch and MongoDB. Adminer is distributed...

System R MICRO Relational Database Management System Pick PRTV QBE IBM SQL/DS Sybase SQL Server OpenOffice.org Base HSQLDB StarBase Adabas D Alphora Dataphor...

option of using SQL (Structured Query Language) for querying and updating the database. The concept of relational database was defined by E. F. Codd at...

traversal examples in PHP Managing Hierarchical Data in MySQL Working with Graphs in MySQL See tree traversal implemented in various programming language...

administration tool for MySQL and MariaDB. As a portable web application written primarily in PHP, it has become one of the most popular MySQL administration tools...

spreadsheet, the datatype of a column is ordinarily defined by the schema describing the table. Some SQL systems, such as SQLite, are less strict about column...

owned by a database user and has the same name as that user. Each user owns a single schema. Schema objects can be created and manipulated with SQL. Ashdown...

language is SQL, though it is one that Codd regarded as seriously flawed. The objectives of normalization beyond 1NF (first normal form) were stated by Codd...

MySQLi Extension (MySQL Improved) is a relational database driver used in the PHP scripting language to provide an interface with MySQL protocol compatible...