追加X從一個查詢結果從另一個結果的X量的量（沒有外鍵連接）

Question

這個查詢帶回的結果是這樣的：select distinct date from dwh.product_count

April, 2013 
March, 2013 
February, 2013 
January, 2013 

我想追加然而許多成果^ ^那帶回從這個查詢結果：

select distinct p_id dwh.members a

5 
7 
8 
...etc 

所以，我的結果是這樣的：

5 April, 2013 
5 March, 2013 
5 February, 2013 
5 January, 2013 
7 April, 2013 
7 March, 2013 
7 February, 2013 
7 January, 2013 
etc.... 

什麼類型的查詢會帶來這些結果？

Answer 1

select id, dt 
from 
    (select distinct p_id as id from dwh.members) s 
    cross join 
    (select distinct date as dt from dwh.product_count) t 

Answer 2

select id, dt from 
(select distinct p_id as id from dwh.members) 
.(select distinct date as dt from dwh.product_count)