What is the use of group by in SQL?

Question

The SQL GROUP BY Statement The GROUP BY statement groups rows that have the same values into summary rows, like "find the number of customers in each country". The GROUP BY statement is often used with aggregate functions ( COUNT() , MAX() , MIN() , SUM() , AVG() ) to group the result-set by one or more columns.

Where GROUP BY is used in SQL?

The SQL GROUP BY clause is used in collaboration with the SELECT statement to arrange identical data into groups. This GROUP BY clause follows the WHERE clause in a SELECT statement and precedes the ORDER BY clause.

What is the use of GROUP BY clause give an example?

The GROUP BY clause is used to get the summary data based on one or more groups. The groups can be formed on one or more columns. For example, the GROUP BY query will be used to count the number of employees in each department, or to get the department wise total salaries.

What is the use of GROUP BY class?

The GROUP BY clause is a SQL command that is used to group rows that have the same values. The GROUP BY clause is used in the SELECT statement. Optionally it is used in conjunction with aggregate functions to produce summary reports from the database. That's what it does, summarizing data from the database.

What is the use of GROUP BY and having clause in SQL?

The GROUP BY Clause is used to group the rows, which have the same values. The SELECT statement in SQL is used with the GROUP BY clause. In the Group BY clause, the SELECT statement can use constants, aggregate functions, expressions, and column names.

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