Question

How to remove (or select) all unique rows from a mysql db?

+-----------+----------+------------+
| FirstName | LastName | BirthDate |
+-----------+----------+------------+
| Tia | Carrera | 1975-09-18 |
| Tia | Carrera | 1975-09-18 |
| Nikki | Taylor | 1972-03-04 |
| Yamila | Taylor | 1972-03-04 |
+-----------+----------+------------+

The removed or selected rows must be an exact duplicate. Example output

+-----------+----------+------------+
| FirstName | LastName | BirthDate |
+-----------+----------+------------+
| Tia | Carrera | 1975-09-18 |
| Nikki | Taylor | 1972-03-04 |
| Yamila | Taylor | 1972-03-04 |
+-----------+----------+------------+

Answer 1

You want to use a SELECT DISTINCT query instead of a SELECT query.

Example:

SELECT DISTINCT
    FirstName,
    LastName,
    BirthDate

FROM YourTable;

This will collapse all identical rows into one result.