Select DISTINCT from multiple columns of multiple tables with PHP and MySQL

Using PHP and MySQL I'm trying to get all the distinct values out the number and type columns from all 4 of the tables listed below:\[code\]table_1ID|t1_number|t1_type1|1|new2|1|old3|2|new4|3|new5|1|oldtable_2ID|t2_number|t2_type1|1|future2|1|new3|3|past4|3|new5|1|newtable_3ID|t3_number|t3_type1|1|past2|1|new3|1|new4|1|new5|1|oldtable_4ID|t4_number|t4_type1|1|new2|4|new3|3|old4|2|new5|1|new\[/code\]The values I want from the above tables would be:numbers: 1,2,3,4types: new,old,future,pastHere is what I have so far; but I'm not sure if the SQL is correct or how to format the while loop to get the values out.\[code\]$sql = "SELECT DISTINCT table_1.t1_number, table_2.t2_number, table_3.t3_number, table_4.t4_number, table_1.t1_type, table_2.t2_type, table_3.t3_type, table_4.t4_typeFROM table_1 JOIN table_2JOIN table_3JOIN table_4";$result = @mysql_query($sql, $con) or die(mysql_error());while($row = mysql_fetch_array($result)) { $numbers= $row[?????????];}\[/code\]
 
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