Group By Function In SQL
In this session of @analyticsschool we will discuss GROUP BY function in SQL. The GROUP BY clause is used to group the same values and return a summary result. If a column that is used in the GROUP BY statement has NULL values, then this statement will consider them equal and group all NULL values in a single group.
We use this clause in with the SELECT statement and specify it after the WHERE clause. If you want to use ORDER BY statements in the same query, then you should place a GROUP BY statement before ORDER BY clauses. We also need to specify aggregate functions like COUNT, MIN, MAX, SUM, and AVG along with column names to get the desired output.
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