SQL group by having clause
SELECT
customer_id,
YEAR (order_date),
COUNT (order_id) order_count
FROM
sales.orders
GROUP BY
customer_id,
YEAR (order_date)
HAVING
COUNT (order_id) >= 2
ORDER BY
customer_id;
Code language: SQL (Structured Query Language) (sql)group by clause in ms sql
/*Group by clause is used to group a selected set of rows into a set of summary
rows by the values of one or more column or expression. It is always used in
Conjunction with one or more aggregate function.*/
SELECT AGGREGATE_FUNCTION(Column_Name) FROM Table_Name
/*Group by exmaple*/
SELECT city, sum(Salary) as TotalSalary FROM tblEmployee GROUP BY CityCopyright © 2021 Codeinu
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