Question

I have a table in Microsoft Dynamics AX ERP Database of SQL Server 2008 R2, which has some rows, there is a field named qty in table, some rows have negative qty and some rows have positive quantity. There is another field TransactionID, now I want to select all those TransactionIDs which have negative qty, AND also those TransactionIDs which have some rows with positive QTys and negative qtys too.

TransactionID is a foreign key field of a master table.

So far I wrote below code which is not working.

select * from RBOTRANSACTIONSALESTRANS main where main.qty < 0 
                                               and main.DATAAREAID = 'DAT'
and exists 
(
select 1 from RBOTRANSACTIONSALESTRANS where QTY > 0 
and RBOTRANSACTIONSALESTRANS.DATAAREAID = main.DATAAREAID
and RBOTRANSACTIONSALESTRANS.STORE = main.STORE 
and RBOTRANSACTIONSALESTRANS.TERMINALID = main.TERMINALID 
)

order by main.TRANSACTIONID

Answer 1

A recap, you want to select all rows for which there exists at least one row with the same TransactionID that has a negative quantity?

select * 
from RBOTRANSACTIONSALESTRANS main 
where main.DATAAREAID = 'DAT'
 and exists 
  (
    select 1 
    from RBOTRANSACTIONSALESTRANS sub 
    where sub.QTY < 0 
      and sub.DATAAREAID = main.DATAAREAID
      and sub.STORE = main.STORE 
      and sub.TERMINALID = main.TERMINALID
      and sub.TRANSACTIONID = main.TRANSACTIONID
  )
order by main.TRANSACTIONID

The main difference is, that you had a main.QTY < 0 check. And I added sub.TRANSACTIONID = main.TRANSACTIONID.