Explain group by clause in sql, Database Management System

Assignment Help:

Explain group By clause in SQL?

Group By clause in SQL: The GROUP BY clause can be used in a SELECT statement to collect data across multiple records and group the results through one or more columns.

The syntax for the GROUP BY clause is:

SELECT column1, column2, ... column_n, aggregate_function (expression)
FROM tables
WHERE predicates
GROUP BY column1, column2, ... column_n;
aggregate_function could be a function like as SUM, COUNT, MIN, or MAX.

Related Discussions:- Explain group by clause in sql

Identify the critical activities, Consider a systems development project wi...

Consider a systems development project with the following data Activity Duration (weeks) Precedence Relationship 1. Software design

What is disadvantage of multiple inheritances, What is disadvantage of mult...

What is disadvantage of multiple inheritances? There is potential ambiguity if the similar variable or method can be inherited from more than one superclass.eg: student class m

Define instance and schema, Define instance and schema? Instance: Colle...

Define instance and schema? Instance: Collection of data stored in the data base at a certain moment is Schema: The overall design of the data base is known as the data base

Convert the er - diagram into a relational database, Convert the following ...

Convert the following ER - diagram (Entity Relationship Diagram) into a relational database (the primary keys are underlined): Ans: The relational database schema f

Northwind Pty Ltd sells a variety of food products throughou, i want help t...

i want help to complete my task

Online examination system project, entity relationship diagram for online e...

entity relationship diagram for online examination system

Find out the names and company names from database, Find out the names and ...

Find out the names and company names of all employees sorted in ascending order of company name and descending order of employee names of by which company. SELECT EMPLOYEE_NAME,

What are the parts of sql language, What are the parts of SQL language? ...

What are the parts of SQL language? The SQL language has various parts: data - definitition language Data manipulation language View definition Transaction contr

Explain the benefit of oom, Explain the benefit of OOM. Main benefits o...

Explain the benefit of OOM. Main benefits of object oriented modeling are development of system become fast, quality of the system get improve. It gives freedom of use of alrea

Locking, define locking in simple language and decribed it

define locking in simple language and decribed it

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages