Order by Vs. Group by Clause in SQL: Know the Difference Between Order by and Group by Clause in SQL
Both of these clauses help a user in organizing the data that SQL queries obtain. Although they serve a similar kind of purpose, there is a significant difference between Order by and Group by clause in SQL. People generally use the GROUP BY clause when they need to aggregate the available functions to multiple sets of rows. On the other hand, we use the ORDER BY clause when we need the available data in sorted order (data obtained by the given query). There are more ways in which both of these differ. Let us discuss that in detail.
What is Order by Clause in SQL?
The keyword- Order by sorts the available sets of results in an order. This order can be either descending or ascending. This type of clause (by default) sets the available results in ascending order. We must use the keyword DESC if we want to sort the same results in descending order.
What is Group by Clause in SQL?
The statement Group by helps a user in grouping the available rows with a similar value. We generally use this clause along with aggregate functions like MIN(), MAX(), AVG(), COUNT(), etc. One significant thing about this kind of clause is that it groups the available tuples on the basis of similarities between the values and attributes of the tuples.
Difference Between Order by and Group by Clause in SQL
Here is a list of the differences between Order by and Group by Clause in SQL.
| Parameters | Order By Clause in SQL | Group By Clause in SQL |
| Use | This statement helps a user in sorting the available results in either a descending or ascending order. | This statement helps a user in grouping all the rows that have a similar value. |
| CREATE VIEW Statement | You cannot use it in the case of a CREATE VIEW statement. | This clause is allowed in the case of a CREATE VIEW statement. |
| Select Statement | In this case, we always use the select statement before the keyword- order by. | In this case, we always use the select statement before the keyword- group by. |
| Attribute | The attributes can exist in this statement under the available aggregate functions. | An attribute cannot exist in this statement under the available aggregate functions. |
| Basis of Sorting and Grouping | In this clause, we sort the result set on the basis of descending or ascending orders. | In this clause, we group the tuples on the basis of the similarities between their attribute values. |
| Presentation of Table | It is capable of controlling the presentation of the available columns. | It is capable of controlling the presentation of the available rows/ tuples. |
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