What will be the order of sorting in the following MySQL statement?

SELECT emp_id, emp_name
FROM person
ORDER BY emp_id, emp_name;

Solution (By Examveda Team)

This question asks about how data will be sorted in a MySQL query. The ORDER BY clause tells MySQL to sort the results. Let's break it down:

The code you see is:

SELECT emp_id, emp_name
FROM person
ORDER BY emp_id, emp_name;

This query selects employee ID (emp_id) and employee name (emp_name) from a table called person. The ORDER BY clause says to sort the results first by emp_id, and then within each group of identical emp_id values, sort by emp_name.

Here's why the answer is Option A: Sorting {emp_id, emp_name}.
The order of the columns in the ORDER BY clause determines the sorting priority. Think of it like this:
1. Sort by `emp_id`: The results are first sorted by employee ID. 2. Then sort by `emp_name`: For each employee ID, the results are then sorted by employee name.

Let's say you have these employee records:
| emp_id | emp_name | |---|---| | 1 | John | | 2 | Alice | | 1 | Jane | | 2 | Bob |

After applying the ORDER BY clause, the data would be sorted as follows:
| emp_id | emp_name | |---|---| | 1 | Jane | | 1 | John | | 2 | Alice | | 2 | Bob |

Think of ORDER BY as a two-step sorting process. First, sort by the first column, then within groups of similar values in the first column, sort by the second column.