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Creator II
Creator II

Getting duplicate records after using Joins for three different tables

Hi All,

Requirement: I have to match the OrderID from the Table 1 in the Table 2 and then for the respective AssignmentID in the Table 2, I need to find a match in the Table 3 to complete the connection between the three tables to get the Post Date and Creation Date for each OrderID which i need for the calculations. Now I tried to apply Left Join between Table 1 and Table 2 and then again a Left Join between the resulting table and the Table 3. This works for unique values in the key fields but in real time, it is fairly common to have multiple records for the same OrderID with different Post Dates, DocNumber etc and similarly multiple records for the same AssignmentID with different Creation Date/DeliveryNumber, you get the gist of it. 

For Ex: If there are two records for the same OrderID in Table 1 and have two records in the Table 3 for the respective AssignmentID, then after applying the Joins, I will have 4 records in the resulting table rather than just 2 i.e. a duplicate for each record. What i want is to have both Creation Date and Post Date in my final table for each record in the Table 1 without any duplicates. I couldn't use ApplyMap() because of the duplicates in the Key fields(or is there a workaround?)

Below is a simple example of how the data looks and how it is connected.Please help me out here to get the desired result as without getting this done, there's no moving forward. Let me know if the problem is not clear enough


Table 1

OrderID        Post Date        DocNumnber       ....More Columns

1234                06/23/19          98273445

1235                06/23/19          98273450

1235                06/24/19          98273493


Table 2

OrderID        AssignmentID     ....More Columns

1234                 873         

1235                 874     


Table 3

AssignmentID        Creation Date      DeliveryNumber

873                                  06/23/19              98749335

874                                  06/23/19              98749337

874                                  06/25/19              98749342




2 Replies

I think that if you put the same name to the fields qlikview  will do the match for you.


Creator II
Creator II

Yeah it will, but all three tables will remain separate which means Post and Creation Dates would be in separate tables and i won't be able to do calculations using them for each record.

Also it doesn't solve the 4 records instead of 2 problem.