How about: $id1 = 1; $id2 = 0;
while ($id1) /** or ($id2 != 8) **/ { $sql = "select * from table where id1=$id1"; $row=query($sql); $id1=$row->id1; $id2=$row->id2; do_stuff(); $id1 = $id2 } On Tue, June 19, 2007 10:58, Matt Juszczak wrote: > Hi all, > > I've got a table such as the following: > > id1 char > id2 char > > sample data looks like this: > > id1 id2 > 1 3 > 2 4 > 3 5 > 5 6 > 6 8 > > And of course another table has something like: > > id info1 info2 info3 > 1 blah blah blah > 2 blah blah blah > > I'd like to store paths to specific destinations... > > In other words, the path from 1 to 8 is: > > 1,3,5,6,8 > > I was thinking of creating a table called relationships > > start end path > 1 8 {3,5,6} > > This would allow me to easily display the path if I know the start and > end, but > what it doesn't allow me to do is reuse the data. > > IE: say that I calculate the path from 1 to 8 as 1,3,5,6,8, and then I > want to > know the path from 3 to 6. even though this is already calculated, I have > to > recalculate it as another row... hence > > start end path > 1 8 {3,5,6} > 3 6 {5} > > I considered making another table, called hops, such as: > > start end relationshipID > 1 8 1 > > > table hops: > relationshipID start end > 1 1 3 > 1 3 5 > 1 5 6 > 1 6 8 > > Then I could almost "reuse" those hops somehow.... but not sure. > > Can anyone recommend a good way to store this data? > > Thanks! > > -Matt > > -- > MySQL General Mailing List > For list archives: http://lists.mysql.com/mysql > To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED] > > > -- > This message has been scanned for viruses and > dangerous content by MailScanner, and is > believed to be clean. > -- Later Mogens Melander +45 40 85 71 38 +66 870 133 224 -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]