Compare two files with same columns

I've two inputs (A and and would like to compare and update data having A as primary. For example:

Input A Input A Input B Input B Output Output

- ID and Year are the key fields

- I'd like to update Address and Contact. If the field is null on B, keep A.

Real tables actually have 75 fields. Is there a way to create a single template formula for all 75 fields like IIF(Isnull([Field_B]), [Field_A], [Field_B]) instead of creating a formula for each field (one giant formula tool with 75 formulas) - nor using batch macros.

Datasets

Dynamic Processing

Accepted answers

LukeM

@ricardocg ,

The easiest way to do this is to transpose both datasets so your numerous fields are all stacked on top of each other. You can then filter for where you have nulls in A and then join them with B to replace them. All that is needed is to union them back together and then cross tab to get your full data structure back.

Hope this helps. Let me know how you get on.

Luke

All comments

MarqueeCrew

@ricardocg,

Would you like to try my CReW Delta macro to find the changes?

https://gallery.alteryx.com/#!app/CReW-Delta--Alpha-/5b41141b826fd3116445fee8

Cheers,

Mark

LukeM

@ricardocg ,

Hope this helps. Let me know how you get on.

Luke

ricardocg

@LukeM this works!

1. Transpose using ID, Year as Key field and the rest of the fields as Data

2. Filtered out empty data (Value)

3. Cross Tab using ID, Year as Group Data fields

4. Join: on J output I deselect L fields and keep/rename R fields removing the "Right_" prefix.

5. Union.

@MarqueeCrew also thanks for the macro. I see this isn't in the CreW Macro (2016) but I imported already. I'll surely use it in the near future.

jrasmus

This flow sounds like exactly what I am looking for, but I don't have the latest version of Alteryx. What version are you using? Is there a way to save this in a lower version or have created in the lower version to be able to use?

Thank you.

Jackie

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