如果在 MS EXCEL 中匹配，则将具有重复项的列值替换为另一列

Question

I have a Table, say TABLE-1 with 4 columns. Columns are (ID, NAME, GROUP_NAME, IS_APPROVER), ID is not the primary key. There are many rows with same ID. Now I got a new Table, say TABLE-2 with Columns, (NEW_ID, OLD_IDs), in this table (TABLE-2), OLD_ID is the primary Key. I have to replace all the values of IDs in TABLE-1, with the NEW_ID (in TABLE-2) values compared using OLD_ID (in TABLE-2). How can I do this?

Answer 1

Assuming your tables look like the below:

You should just be able to use a combination of INDEX and MATCH to get your desired results:

=INDEX(TABLE-2[NEW_ID],(MATCH(TABLE-1[@ID],TABLE-2[OLD_IDs],0)))

If your data is not actually in tables but in ranges the general formula is:

=INDEX(ColumnFromWhichValueShouldBeReturned, (MATCH(LookupValue, ColumnAgainstWhichToLookup, 0)))

EDIT following further info from OP:

If not all the ID's are matched in TABLE-2 you can use the following:

=IFERROR(INDEX(TABLE-2[NEW_ID],(MATCH(TABLE-1[@ID],TABLE-2[OLD_IDs],0))), Table1[@ID])

In practice you can see this working below:

Answer 2

You could potentially use VLOOKUP to make it a little easier.

I added a new column to the first table and the formula for that column is simply

=VLOOKUP([@ID], Table2[#All], 2)

Answer 3

This is the solution..

Ref: https://www.ablebits.com/office-addins-blog/2014/08/13/excel-index-match-function-vlookup/

=INDEX(Table_2[NewIDs],MATCH(Table_1[@ID],Table_2[Old_ID],0)) Ex: =INDEX($K$2:$K$253,MATCH(B2,$J$2:$J$253,0))