How to eliminate duplicates from select query?

Question

Before asking this question I searched using Google but I couldn't understand or maybe could not find a solution suitable for my situation.

So, I have one Table with 10 columns, I want to eliminate duplicates from select result. And in the result all columns should be presented which has unique userID's

+-----------------------------------+------+---------------------+------+
| name                              | yr   |   some Columns      |userID|
+-----------------------------------+------+---------------------+------+
| abc                               | 2000 |                     |   10 |
| jack                              | 2000 |                     |   11 |
| dadas                             | 2000 |                     |   12 |
| jack                              | 2004 | .............       |   11 |
| jack                              | 2000 | ...........         |   11 |
| nell                              | 2006 | .............       |   13 |
| ......                            | 2000 | .............       |   1  |
| .............                     | 2000 | .............       |   2  |
| again                             | 2000 | .............       |   3  |
| again                             | 2000 |                     |   3  |
| .......                           | 1973 | .............       |   2  |
| abc                               | 2000 |                     |   10 |

Answer 1

Try this one:

SELECT * FROM TABLE_NAME GROUP BY userID