Question

I’ve tables related with foreign keys and i try to prepare a view to compose them via inner joins on SQL Server. I don’t know if using inner join’s is the way, but I can’t get what I want anyway.

Tables are like below (I have more than 2 tables):

Table1:

| ID | Bla Bla... |

Table2:

| ID | Table1ID | Bla Bla... |

The query I tried is like this:

Select 
    Table1.ID, COUNT(Table2.ID) as FooCount
From
    Table1 
Inner Join
    Table2 on Table2.Table1ID = Table1.ID

The result I want to see should be this:

|    ID    | FooCount |
-----------------------
|    1     |    45    |
|    2     |    75    |
|    3     |    98    |
|    4     |    100   |
|    5     |    11    |
|    6     |    37    |

How can I do this?

Answer 1

You don’t even need a join to do this:

SELECT Table1Id AS ID, COUNT(*) as FooCount FROM Table2 GROUP BY Table1Id