title: In MySQL, how do I select only rows with certain values for a given column?
body: <p>Let's say I have this table:</p>
  
  <pre><code>|user_id | first_name | last_name |
  ----------------------------------|
  | 0      |  joe       |  smith    |
  | 1      |  bob       |  jones    |
  | 2      |  joe       |  black    |
  | 3      |  mary      |  jeane    |
  | 4      |  peter     |  parker   |
  </code></pre>
  
  <p>How would I go about selecting the contents of the rows which correspond to the user_id's <code>1</code>, <code>2</code> and <code>3</code>? I want to use these rows later to display their contents in a list to the user.</p>