Look up value from Table A and then look between two values in Table B

[ToddMate]

Hi,

I am trying to look up a postcode value from the "Accounts & Services" table, and then look into the "ExpressPost" table searching the postcode where it falls on or between the "Postcode Start" and "Postcode End" columns and then return the delivery ETA

This works, however it only returns a value where the postcode from the Accounts and Services table matches the postcodestart value .. all others return a blank value.

ExpressPost = CALCULATE(VALUES(ExpressPost[deliveryeta]),FILTER(expresspost,expresspost[postcodestart]>='Accounts & Services'[Postcode] && expresspost[postcodeend] <= 'Accounts & Services'[Postcode]))

Can anyone assist me with where i am going wrong?

Cheers 

Todd

[v-lionel-msft]

Hi @ToddMate ,

Is the data table you have like this?

A&S table:

ExpressPost table:

As you can see , i don't  know the relationship between two tables,

So , you can give me a sample data model, and it's better to give me the expected result.

Best regards,
Lionel Chen

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