Which of these is not optional?

SELECT select_list FROM table_list WHERE row_constraint GROUP BY grouping_columns;

Solution (By Examveda Team)

This question is about the basic structure of a SELECT statement in MySQL. Let's break it down:

SELECT select_list FROM table_list WHERE row_constraint GROUP BY grouping_columns;

* SELECT select_list: This part tells MySQL what columns you want to retrieve from the database. You must specify the columns you want, so this is not optional.
* FROM table_list: This part tells MySQL which table(s) to get the data from. You must specify the table(s) you want to query, so this is not optional.
* WHERE row_constraint: This part filters the data based on certain conditions. This is optional. If you want to retrieve all data, you can skip this part.
* GROUP BY grouping_columns: This part groups rows with the same values in the specified columns. This is optional. You only need this part if you want to perform calculations or analysis on grouped data.

Therefore, the correct answer is Option D: grouping_columns.

In summary:
* You must specify the columns you want to select (select_list) and the table(s) you want to query from (table_list).
* The WHERE clause and GROUP BY clause are optional.