试图从另一个表中获取价值-SQL

Question

I have two tables:

Food and Aisle.

Food contains the fields foodID, Name, Cost, and Sale Price.

Aisle contains foodaisleID, Aisle Name, Aisle Location AND foodID

What I am doing is displaying all of the foodaisleID's on my page along with the Aisle Name and the Aisles location (doing this from the Aisle table).

What I am trying to do is along with displaying all the foodaisleIDs, Aisle Name and Aisle Location, I'm trying to display the foodID and the food name too, but as that's in a different table I have no idea how to display the corresponding one. (If I choose a specific Aisle, I want to display only the foods in that aisle).

My current SQL statement is:

"SELECT * FROM aisle WHERE foodaisleID = $foodaisleID"

and then I am echo'ing out the aisle name etc, any idea how I could incorporate the other table into the statement so I can echo the food name and cost too?

I have looked at "joins" but not sure how to actually implement them in

Answer 1

Might be worth making foodAisleID a foreign key inside the Food table (at this point I assume that it is a primary key inside the Aisle table, so correct me if I'm wrong) so that you display the foodID and food name that correspond to the correct foodAisleID. Then you could use a join to retrieve the correct data from both tables.

Answer 2

 SELECT * FROM aisle JOIN food ON Food.FoodId = Aisle.FoodId WHERE foodaisleID = $foodaisleID

应该做的把戏