Dose pytorch support join operator in SQL？
I have a tensor a and a tensor b, I want to join the first row of a and the second row of b to get c, based on the second row of a and the first row of b.
Dose any function support it? Or how can I achieve it with short time and small memory?
a = torch.tensor([[11, 1],
                  [12, 1],
                  [12, 2]])

b = torch.tensor([[1, 21],
                  [1, 22],
                  [2, 23]])

c = torch.tensor([[11, 21],
                  [11, 22],
                  [12, 21],
                  [12, 22],
                  [12, 23]])

c = f(a,b)