在这种情况下如何获得结果？

Question

Suppose, We have two tables:- Branch and User

Branch:

BranchCode  |  BranchName  | IsActive  |
----------------------------------------
   1        |    aaa       |   0       |
----------------------------------------
   2        |    bbb       |    1      |
---------------------------------------
   3        |    ccc       |     0     |

---

User:

UserId   |  Name  |
-------------------
  333     |  jjjj |
-------------------
  444      |  kkkk|
-------------------

We want to select result as

MemberId
--------
2 - 333
--------
2 - 444
-------

that means, we take the branchcode for those who has isactive = 1

I am facing problem to retrieve the resultset as the table has no relation, is there a way to get the result as expected?

Answer 1

Use CROSS JOIN :

SELECT b.branchcode, u.UserId   
FROM brach b CROSS JOIN
     (SELECT UserId FROM User u) u
WHERE b.IsActive = 1;

Answer 2

SELECT CONCAT(b.branchcode,' - ', u.UserId) MemberId FROM User u,brach b WHERE b.IsActive = 1;

Answer 3

You might use RIGHT OUTER JOIN as :

select concat(b.branchcode,'-',u.userid) as MemberId
  from branch b
 right outer join "user" u
    on b.isactive = 1;

MemberId
--------
2 - 333
2 - 444

ps user is a reserved keyword in MSSQL, so I've used table "user" instead.

SQL Fiddle Demo