I am used to dealing with tables and queries in Access, so some shift in my knowledge is necessary.
- I have a 350K row query in Power Query, Excel 2016
- I need to essentially do a VLOOKUP of one of the column to another table with just 20 values in it and return ALL rows in the main query, with a column that shows what matches so I can quickly filter/unfilter as needed.
In Access, I'd just do a left join and add the column from the 20 record table to the query and could easily filter on nulls or values.
In Excel, it seems the only way to do this is the "MERGE" generates a 3rd query. This is another 350,000 record database. This 3rd query is correct, but my Excel file effectively doubles in size.
Is there no way to have this matched column added to the first query of 350K records and eliminate the need for the massive data requirements the 3rd query adds?
I could have, of course, done the vlookup in the first table much faster and with much less data overhead, but a VLookup in a 350,000 record database makes filtering unbearable. System totally bogs down.
Ed