Question

I need to grab a result from one query and pop it into another.

first query

$query = 'SELECT * FROM singleprop.jos_mls WHERE MSTMLSNO = ' . $mlsnum . ';';
$result = mysql_query($query);
$row = mysql_fetch_row($result);

second query

$aquery = 'SELECT * FROM singleprop.jos_agents WHERE AGTBRDIDMM = ' . $row[0] . ';';
$aresult = mysql_query($aquery);
$agent = mysql_fetch_row($aresult);

I know about JOIN, but don’t know how to apply it with a 3rd table. Does my model have something to do with $this->?

Answer 1

The code looks good. You could write a query using join, which you are aware of. What is the question?

SELECT * 
FROM   singleprop.jos_mls as mls JOIN singleprop.jos_agents 
          ON singleprop.jos_mls.KEY = singleprop.jos_agents.KEY
WHERE mls.MSTMLSNO = $mlsnum

where KEY is the join key

OR

SELECT * 
FROM   singleprop.jos_agents 
WHERE  AGTBRDIDMM = (
                     SELECT COL_NAME 
                     FROM   singleprop.jos_mls 
                     WHERE MSTMLSNO = ' . $mlsnum . '
                    )

where COL_NAME is the column name for AGTBRDIDMM in the first table