distinct in query repeating values - mysql

Question

I wonder if anyone can spot the problem with this 'view' query to show only 'company' and 'materials'. The problem is that it shows each entry a separate time for each material and company. I'm using this view to populate a dropdown box in a form but I would only like it to show the distinct values for each column (company/materials) - as of now if, for example, end result is the company 'Anderson' twice but with different materials for each...it shows 'Anderson' twice. I've tried using DISTINCT after the select statement for each of the two, but I don't achieve what I want.
select `b`.`company` AS `company`, `bp`.`material` AS `material`
from (((`caseys_wrdp4`.`windows_brands_products` `bp`
left join `caseys_wrdp4`.`windows_brands` `b` on((`bp`.`brand_id` = `b`.`id`)))
join `caseys_wrdp4`.`Windows_last_submissions` `ls`)
join `caseys_wrdp4`.`windows_materials` `wm`)
where ((`bp`.`width` = round(`ls`.`width`,0))
and (`bp`.`height` = round(`ls`.`height`,0))
and (`bp`.`material` = `wm`.`name`)
and (`bp`.`type` = `ls`.`type`)
and if ((`ls`.`minimumbid` <> '0.00'),
(`bp`.`cost` between `ls`.`minimumbid` and `ls`.`maximumbid`),
(`bp`.`cost` <= `ls`.`maximumbid`)))

Answer 1

Possible answer:
Add GROUP_CONCAT and GROUP BY to your query:
select `b`.`company` AS `company`, GROUP_CONCAT(`bp`.`material`) AS `materials`
from (((`caseys_wrdp4`.`windows_brands_products` `bp`
left join `caseys_wrdp4`.`windows_brands` `b` on((`bp`.`brand_id` = `b`.`id`)))
join `caseys_wrdp4`.`Windows_last_submissions` `ls`)
join `caseys_wrdp4`.`windows_materials` `wm`)
where ((`bp`.`width` = round(`ls`.`width`,0))
and (`bp`.`height` = round(`ls`.`height`,0))
and (`bp`.`material` = `wm`.`name`)
and (`bp`.`type` = `ls`.`type`)
and if ((`ls`.`minimumbid` <> '0.00'),
(`bp`.`cost` between `ls`.`minimumbid` and `ls`.`maximumbid`),
(`bp`.`cost` <= `ls`.`maximumbid`)))
GROUP BY(`b`.`company`);
This will give you back a single row for each company w/ company and materials. materials will be a comma-separated list (#Barmar). You could then parse that field for the 2nd drop down.
Example Rows:
'Anderson' 'Wood,Vinyl'
'WM' 'Metal','Plastic'
Assuming you're building a webpage, depending on how you're building the DOM, you can either use javascript str.split(), https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/split, or on the server side, any language should work.