Question

I’m trying to check if the count from two tables are the same

I have one query:

SELECT Count(1) AS Items,
       [Basket Id],
       [Customer Id]
FROM   Order_Lookup
GROUP  BY [Basket Id],
          [Customer Id]

Which returns:

3   2   135674
5   4   115576
3   5   115576
2   3   118342
4   6   182368

And I also have:

SELECT Count(1) AS Items,
                 a.[Basket Id],
                 a.[Customer Id]
          FROM   C1059204.Order_Lookup a
          WHERE  a.[Product Id] NOT IN (SELECT [Product Id]
                                        FROM   Orders
                                        WHERE  [Customer_Id] = a.[Customer Id]
                                               AND OrderDate = Dateadd(DAY, Datediff(DAY, 0, Getutcdate()), -2)
                                               AND OrderStatus IN ('POSTED' ))
          GROUP  BY a.[Basket Id],
                    a.[Customer Id] 

Which returns:

3   2   135674
3   4   115576
3   5   115576
2   3   118342
4   6   182368

As you can see 115576 Basket Id 4 has a lower number.

I need to have a query like

SELECT * FROM TABLE
WHERE (COUNT OF FIRST SUBQUERY) = (COUNT OF SECOND SUBQUERY)

How can I do this, I have been trying for a long time now and can’t figure it out.

Thanks

Answer 1

You can wrap both subqueries and join on the alias names.

select *
from (
    SELECT Count(1) AS Items,
           [Basket Id],
           [Customer Id]
    FROM   Order_Lookup
    GROUP  BY [Basket Id],
              [Customer Id]
) as query1
join (
    SELECT Count(1) AS Items,
                     a.[Basket Id],
                     a.[Customer Id]
              FROM   C1059204.Order_Lookup a
              WHERE  a.[Product Id] NOT IN (SELECT [Product Id]
                                            FROM   Orders
                                            WHERE  [Customer_Id] = a.[Customer Id]
                                                   AND OrderDate = Dateadd(DAY, Datediff(DAY, 0, Getutcdate()), -2)
                                                   AND OrderStatus IN ('POSTED' ))
              GROUP  BY a.[Basket Id],
                        a.[Customer Id] 
) as query2 on query1.Items = query2.Items