title: MySQL Left Join returns error
body: <p>Maybe I just haven't done a LEFT JOIN in too long, but I'm perplexed.</p>
  
  <p>Here are my tables:</p>
  
  <pre><code>Table: user_phones
  
  user    phone       carrier
  ----------------------------
  danny   5045551234  Verizon
  mom     5551234567  T-Mob
  tony    5121234567  T-Mob
  
  Table carriers
  
  carrier    email_exchange
  --------------------------
  Verizon    vtext.com
  T-Mob      tmomail.net
  </code></pre>
  
  <p>And here is my query:</p>
  
  <pre><code>SELECT user, CONCAT(phone, '@', email_exchange) AS sms
  LEFT JOIN carriers ON (user_phones.carrier = carriers.carrier)
  FROM user_phones
  </code></pre>
  
  <p>And I keep getting back:</p>
  
  <blockquote>
    <p>'LEFT JOIN carriers ON (user_phones.carrier = carriers.carrier) FROM
    user_phones'</p>
  </blockquote>
  
  <p>I know this is a bonehead oversight, but variations are not helping (putting the <code>ON</code> clause in parenthesis, etc) is not working.</p>
  
  <p>Where am I slipping up?</p>