Question

I have a couple of views that generates the following two outputs in SQL Server.
First one (Flats output) shows the number of flats in a particular town with Tileroofs and Brickwalls. Second one shows the same, but for houses.

What I’m trying to do is to create a final table that looks like the 3rd example where the flats and house counts are combined with the corresponding Tileroof and Brickwall combinations.

I have tried union and then grouping, but I’m really struggling to get the Flats and Houses count columns side by side. Is anyone able to help please?

Thanks

--View one
| Town | Flats | TileRoofs | Brick Wall |
-----------------------------------------
| A    | 3     | Y         | N          |
| A    | 4     | N         | Y          |
| A    | 8     | N         | N          |


--View two
| Town | Houses | TileRoofs | Brick Wall |
------------------------------------------
| A    | 1      | Y         | Y          |
| A    | 2      | Y         | N          |
| A    | 5      | N         | Y          |
| A    | 2      | N         | N          |


--Prefered output, by combining the two--

| Town | Flats | Houses | TileRoofs | Brick Wall |
--------------------------------------------------
| A    | 0     |  1     | Y         | Y          |
| A    | 3     |  2     | Y         | N          |
| A    | 4     |  5     | N         | Y          |
| A    | 8     |  2     | N         | N          |

Answer 1

Full outer join might help here.

select isnull(a.Town, b.Town) Town,
       isnull(a.TileRoofs, b.TileRoofs) TileRoofs,
       isnull(a.[Brick wall], b.[Brick wall]) [Brick wall],
       isnull(a.Flats, 0) Flats,
       isnull(b.Houses, 0) Houses
  from ViewOne a
  full outer join ViewTwo b
    on a.Town = b.Town
   and a.TileRoofs = b.TileRoofs
   and a.[Brick wall] = b.[Brick wall]