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POThe used SELECT statements have a different number of columns (REDUX!!)
 

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  1. POThe used SELECT statements have a different number of columns (REDUX!!)
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    <p>There's another question out there similar to this, but it didn't seem to answer <em>my</em> question.</p> <p>My question is this: why am I getting back this error <code>ERROR 1222 (21000): The used SELECT statements have a different number of columns</code> from the following SQL </p> <pre><code>SELECT * FROM friends LEFT JOIN users AS u1 ON users.uid = friends.fid1 LEFT JOIN users AS u2 ON users.uid = friends.fid2 WHERE (friends.fid1 = 1) AND (friends.fid2 &gt; 1) UNION SELECT fid2 FROM friends WHERE (friends.fid2 = 1) AND (friends.fid1 &lt; 1) ORDER BY RAND() LIMIT 6; </code></pre> <p>Here's <code>users</code>:</p> <pre><code>+------------+---------------+------+-----+---------+----------------+ | Field | Type | Null | Key | Default | Extra | +------------+---------------+------+-----+---------+----------------+ | uid | int(11) | NO | PRI | NULL | auto_increment | | first_name | varchar(50) | NO | | NULL | | | last_name | varchar(50) | NO | | NULL | | | email | varchar(128) | NO | UNI | NULL | | | mid | varchar(40) | NO | | NULL | | | active | enum('N','Y') | NO | | NULL | | | password | varchar(64) | NO | | NULL | | | sex | enum('M','F') | YES | | NULL | | | created | datetime | YES | | NULL | | | last_login | datetime | YES | | NULL | | | pro | enum('N','Y') | NO | | NULL | | +------------+---------------+------+-----+---------+----------------+ </code></pre> <p>Here's <code>friends</code>:</p> <pre><code>+---------------+--------------------------------------+------+-----+---------+----------------+ | Field | Type | Null | Key | Default | Extra | +---------------+--------------------------------------+------+-----+---------+----------------+ | friendship_id | int(11) | NO | MUL | NULL | auto_increment | | fid1 | int(11) | NO | PRI | NULL | | | fid2 | int(11) | NO | PRI | NULL | | | status | enum('pending','accepted','ignored') | NO | | NULL | | +---------------+--------------------------------------+------+-----+---------+----------------+ </code></pre> <p>If you want to give any feedback on anything crazy you see going on here, as well, please feel free to do so. I'll take my lumps.</p>
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    1. CO+1: Thanks for posting a new question for a new error msg.
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    2. COThanks for suggesting it! I really do appreciate it, particularly when I'm new to Stack's general mores.
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