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For valid expressions, see expressi… GROUP BY column-expressionGroups the SELECT statement results according to the values in a list of one or more column expressions. The column must appear in the FROM clause of the SELECT statement, but is not required to appear in the SELECT list. This column can belong to a table, derived table, or view.

GROUP BY (Transact-SQL) - SQL Server | Microsoft Docs Ĭolumn-expressionSpecifies a column or a non-aggregate calculation on a column.

Syntax The basic syntax of a GROUP BY clause is shown in the following code block. This GROUP BY clause follows the WHERE clause in a SELECT statement and precedes the ORDER BY clause.

The SQL GROUP BY clause is used in collaboration with the SELECT statement to arrange identical data into groups. The following statement groups rows with the same values in both department_id and job_id columns in the same group then return the rows for each of these groups.

SQL GROUP BY - SQL Tutorial Ĭode language: SQL (Structured Query Language) (sql) This clause will group all employees with the same values in both department_id and job_id columns in one group.

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. 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".