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Help with keys / tables

Good Evening everyone,

I need your help as I am getting very confused with keys and associations.

I have 13 tables each of which contain the columns Year, Month & Ship.

When I loaded the data into the system, it generated a synthetic key table.

Now when I am creating graphs based on Month I am getting odd results, sometimes the Months are not ordered correctly, sometimes I am getting a new bar names ' - ' which I can get rid of if I deselect null values, but I don't have any null values in the table data.

Am I doing something wrong?

1 Reply

Re: Help with keys / tables

If your tables contain the same content or at least are quite familiar together then it's often the best to concatenate these tables, like:


Load * From t1;


Load * From t2;


Load * From t3;


Commenly used are also combined keys between the tables to avoid the synthetic keys, like:

Year & '|' & Month & '|' & Ship as KEY

whereby I do not believe that those approach will be really suitable for you with 13 tables.

Many good postings about how to develop datamodels could you find here:

Get started with developing qlik datamodels.

- Marcus

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