Question

What I have is a mySQL query that will select some drinks and return basic information about the drink, as well as a list of the ingredients of that particular drink, as well as the rating for the particular drink. I have 3 tables drinks, drinks_ratings, drinks_ing

So, my issue is that say I want to get information about drinks that contain vodka, and are in a highball glass I would run the query below…

It works, its just my issue is that it doesnt return ALL the ingredients back. For Example, if I return “randomDrinkName1” and it happened to have vodka and soda in it….when i get the information back it leaves out the soda because i said WHERE ing = voda, so I understand why this is happeneing…but Is there some other type of WHERE clause I can do to check if it has “vodka” and return it along with all the other ingredient information that might also be there?

I know I could just do a query before this query that gets be back ids that have vodka in them from my drinks_ing table.

But this seems like it could be bad idea …like if there were 1000s of drinks with vodka in them just to do a query on a select with a 1000 OR statements.

I’m interested if there is a way i can easily do this all in one query. thanks!

select dIngs.id,
    dIngs.name,
    dIngs.descrip,
    dIngs.type,
    dIngs.ing,
    AVG(b.rating) as arating,
    COUNT(b.id) as tvotes
from (
    select a.id,
        a.name,
        a.descrip,
        a.type,
        concat (
            '[',
            GROUP_CONCAT('{\"ing\":', c.ing, ',\"parts\":', c.parts, '}'),
            ']'
            ) ing
    from drinks a
    left join drinks_ing c on a.id = c.did
    where c.ing = "vodka"
        and a.type = "highball"
    group by a.id
    ) dIngs
left join drinks_ratings b on dIngs.id = b.id
group by dIngs.id
order by arating desc,
    tvotes desc LIMIT 0,
    50;

edit:
to illustrate a result that I would want to get is like this:

           [0]
              descrip = "the description text will be here"
              arating = 0
              id = 4
              ing = [ {"ing": "vodka", "parts": 4}, {"ing": "soda", "parts": 2}, {"ing": "sprite", "parts": 2} ]
              name = "awesomeDrink"
              type = "highball"
              tvotes = 0

but what im actually getting back just includes the vodka ing because thats what i was checking for

           [0]
              descrip = "the description text will be here"
              arating = 0
              id = 4
              ing = [ {"ing": "vodka", "parts": 4} ]
              name = "awesomeDrink"
              type = "highball"
              tvotes = 0

To be clear, if i dont supply something like where ing = vodka, i get all the ingredients back just fine. thats not the issue….

I need it to just check if one of the potential ingredients happens to be vodka, then basically return all the ing data…and if vodka isn’t a potential ingredient, ignore that drink and NOT return it.

edit:
what my tables look like..

drinks_ing
---------------
did (which is the drink id its associated with)
id (the id of the ingredient aka "vodka")
parts

drinks
---------------
id
name
description
type
timestamp

drinks_ratings
-----------------
id
userid
rating
timestamp

Answer 1

Your best approach may be to use a self join. This is where you reference the same table twice, but by different names. Roughly this would look like:

SELECT     d.stuff
FROM       drinks d
INNER JOIN drinks v on d.id = v.id
WHERE      v.ingredient = "vodka"

Update: Making this better correspond to the tables in question. This is saying: given all of the vodka ingredients, find all of the ingredients that are found in the same drink as that vodka ingredient.

SELECT     d.*
FROM       drinks_ing d
INNER JOIN drinks_ing v on d.did = v.did
WHERE      v.ing = "vodka"