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merge two mapping files into one


I have 2 different mapping files MapA and MapB having the common ID field. I want to merge them into one QV table having the ID as Key, as follows:


NewMap.Type = MapA.Type or MapB.Type depending on which of the tables having a value for that field.

I have tried diffrent methods but the one getting close to work (but just close) is.

Load MapA

Load MapB while renaming all the fields to unique names

Give me a MaPA table that is auto concatenated on ID and contains all the fields from MapA and MapB

I then load MaPA into NewMap testing if(isnull(MapA.AType), MapA.Btype, MapA.Atype) as NewMap.Type

The consequences is unfortunately that I get duplicated ID's in NewMap table

Do I need to use the Qualify function or is it other ways to do it.



2 Replies
Honored Contributor II

Re: merge two mapping files into one


See if the below logic works for you:

Load MapA from table;

Load MapB from table

where not exist(ID);

and after that remove null from the table



Not applicable

Re: merge two mapping files into one

Thanks sushil,

Sorry being a bit new I do not fully follow the logic.

What do you mean by where not exist(ID)?

And how do you remove null from the table?

I might have explained the issue badly.

MapA.ID     MapA.Type     MapA.SubType

1                    Atype          null

2                    Btype          CSubType

3                    null               DSubType

MapB.ID          MapB.Type     MapB.SubType

1                         null             BSubType

3                        Btype          null

To become

NewMap.ID     NewMap.Type     NewMap.SubType

1                    Atype                    BsubType              

2                    Btype                    CsubType

3                    Btype                    DsubType



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