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HI,
I have two tables I am going to concatenate together, what should my default values be for dates, characters and values when I have fields that don't exist in one of the tables?
Thanks
Hello Ivan Drago,
Forgive me, but... I must break you... by agreeing as has been pointed out, if you are combining just two tables and there is a section where only one of the tables has extra fields, you don't need to do anything extra for their data types, just load them in with their current formats unchanged.
However, when you start sequencing from many sources, it becomes helpful to remember the "first touch" principle, where the first load statement for a concatenated field "casts" it for all subsequent loads. I put together an illustration that should cover some examples:
please post sample data for both tables.
regards
Marco
The fields which belonged together and contain the same content should have the same field-names and formattings. By the other fields isn't this really important:
On Format Codes for Numbers and Dates
- Marcus
Hello Ivan Drago,
Forgive me, but... I must break you... by agreeing as has been pointed out, if you are combining just two tables and there is a section where only one of the tables has extra fields, you don't need to do anything extra for their data types, just load them in with their current formats unchanged.
However, when you start sequencing from many sources, it becomes helpful to remember the "first touch" principle, where the first load statement for a concatenated field "casts" it for all subsequent loads. I put together an illustration that should cover some examples:
Hi,
Qlikview will put Null in the fields not available in other table, I think it doesn't matter what is the type of fields whether date, char which doesn't exists in other table as all such values will be null. Not sure if I understood the question.
TableA:
Field A, Field B
AAA, BBB
Concatenate
TableB:
Field A, Field C
AAA1, CCC
Output:
TableA:
Field A, Field B, Field C
AAA, BBB, -(Null Symbol)
AA1, -(Null), CCC
Null.