MySQL – Derived Tables Table of content MySQL Derived Tables The Derived tables are pretty much what their name describes: they are the tables that are derived from another MySQL database table (main table). In other words, the derived table is a virtual result-set obtained from a SELECT statement given as a subquery to another […]
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MySQL – Create Index Table of content A database index improves the speed of operations in a database table. They can be created on one or more columns, providing the basis for both rapid random lookups and efficient ordering of access to records. Practically, indexes are a special type of lookup tables, that hold a […]
MySQL − Queries Table of content MySQL is an open-source relational management system (RDBMS) that allows us to store and manage data or information. The queries in MySQL are commands that are used to retrieve or manipulate the data from a database table. Following are the commonly used commands in MySQL: SELECT, UPDATE, DELETE, INSERT […]