Data query language: Difference between revisions

Revision as of 07:49, 15 October 2022

Revision as of 10:33, 9 January 2023

Line 1:

{{Distinguish|Query language}}

'''Data Queryquery Languagelanguage''' ('''DQL''') is part of the base grouping of [[SQL]] sub-languages. These sub-languages are mainly categorized into four categories: a data query language (DQL), a [[data definition language]] (DDL), a [[data control language]] (DCL), and a [[data manipulation language]] (DML). Sometimes a transaction control language (TCL) is argued to be part of the sub-language set as well.

DQL statements are used for performing queries on the data within schema objects. The purpose of DQL commands is to get the schema relation based on the query passed to it.