Can I use two GROUP BY in SQL?

Can we have 2 GROUP BY in SQL?

SQL GROUP BY multiple columns is the technique using which we can retrieve the summarized result set from the database using the SQL query that involves grouping of column values done by considering more than one column as grouping criteria.

Can we use two GROUP BY in same query?

Yes, it is possible to use MySQL GROUP BY clause with multiple columns just as we can use MySQL DISTINCT clause. Consider the following example in which we have used DISTINCT clause in first query and GROUP BY clause in the second query, on 'fname' and 'Lname' columns of the table named 'testing'.

How can use multiple GROUP BY in SQL Server?

Syntax: SELECT column1, function_name(column2) FROM table_name WHERE condition GROUP BY column1, column2 HAVING condition ORDER BY column1, column2; function_name: Name of the function used for example, SUM() , AVG(). table_name: Name of the table. condition: Condition used.

Can we use GROUP BY for two tables?

Using COUNT with GROUP BY is fine if you're only joining two tables, but once you add a second one-to-many table to the mix, it throws all the aggregate functions out of whack because it causes the extras rows to multiple against each other.