No results from mysql_query - php

Question

I am coding some PHP working with two MySQL databases. What I am working toward is different information to be sourced from the two databases which will then populate some form fields like the drop-down menu. The form will then be posted to create a printable document yada yada...
What Works
The connection to the first database works fine, the field is populated and there are no errors.
What Doesn't Work
When I introduce the second Database I get no errors but the form wont populate. I make this change...
From One Database:
$sql = mysql_query"SELECT * FROM car WHERE color='blue' ORDER BY sqm ASC";
To Two Databases:
$sql = mysql_query("SELECT * FROM car WHERE color='blue' ORDER BY sqm ASC", $conn);
The Connection
Source: http://rosstanner.co.uk/2012/01/php-tutorial-connect-multiple-databases-php-mysql/
How do you connect to multiple MySQL databases on a single webpage?
<?php
// connect to the database server
$conn = mysql_connect("localhost", "cars", "password");
// select the database to connect to
mysql_select_db("manufacturer", $conn);
// connect to the second database server
$conn2 = mysql_connect("localhost", "cars", "password");
// select the database to connect to
mysql_select_db("intranet", $conn2);
?>
The Execution
It appears that $sql = mysql_query("SELECT * FROM car WHERE color='blue' ORDER BY sqm ASC", $conn); Is my problem
<form name="form" method="post" action="review.php">
<table><td>
<select>
<option value="">--Select--</option>
<?php $sql = mysql_query("SELECT * FROM car WHERE color='blue' ORDER BY sqm ASC", $conn);
$rs_result = mysql_query ($sql);
// get the entry from the result
while ($row = mysql_fetch_assoc($rs_result)) {
// Print out the contents of each row into a table
echo "<option value=\"".$row['carname']."\">".$row['carname']."</option>";
}
?>
</select>
</td></table>
</form>
Thanks In advance for any help :)

Answer 1

you've got 2 mysql query commands going...
<?php
$sql = mysql_query("SELECT * FROM car WHERE color='blue' ORDER BY sqm ASC", $conn);
$rs_result = mysql_query ($sql); // <-- $sql here is the result of the first query (ie. not a sql command)
should be
<form name="form" method="post" action="review.php">
<table><td>
<select>
<option value="">--Select--</option>
<?php
$sql = "SELECT * FROM car WHERE color='blue' ORDER BY sqm ASC";
$rs_result = mysql_query( $sql, $conn );
// get the entry from the result
while ($row = mysql_fetch_assoc($rs_result)) {
// Print out the contents of each row into a table
echo "<option value=\"".$row['carname']."\">".$row['carname']."</option>";
}
?>
</select>
</td></table>
</form>
good luck!