lookup table values using a filter

[ValeriaBreve]

Hello,

I have 2 tables, A and B.

I need to lookup column "ID" from table A, but only for the values of table B related column "ID2" are not null.

I would normally do a merge, only how do I handle the condition?

Thanks!

Kind regards

Valeria

[v-yanjiang-msft · Accepted solution]

Hi @ValeriaBreve ,

According to your description, you want to do a conditional merge queries. Here's my solution.

Sample data:

TableA:

TableB:

In my understanding, for null value in TableB, after merge queries with TableA, you want to return blank instead of 40(Sales for null in TableA).

Here's the original code when doing the general merge. Simply replace the three parameter in the Table.NestedJoin-"TableA" to "Table.SelectRows(#"TableA",each [ID]<>null)".

                                         

Get the correct result:

I attach my sample below for your reference.

Best Regards,
Community Support Team _ kalyj

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[ValeriaBreve]

Thanks! This looks so easy... I was trying solutions that were more complicated, I did not know you could declare a subset of the table in the merge function ! So thank you so much for showing me 🙂