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today we're going to talk about cross joins and when they should be used [Music] all right so the cross join is one of the more most seldom used joins that's because it creates what's called a cartesian product so let's see what that means i have a couple tables here so we're going to select from a products table and we're going to select from a division table and we run those together so the products table has three products soap toothbrush and shampoo and the divisions table has two divisions north and south if we want to bring every combination together of products and divisions we would use the cross join so let's write this out so we select from our products and then we cross join and we're cross-joining with divisions now in every other join we always put an on clause in order to say what we're joining on in the cross join we don't care the cross join should give us every combination of the two tables so let's run that and what we see here is basically on the division side we ha...
