Comparing data in 2 text files

Ronanm

Board Regular
Joined
Nov 13, 2010
Messages
107
I have written a piece of code that asks the user to open one text file and it loads it into an Excel sheet. Then asks for a second text file which it loads into another sheet. Then runs through the second sheet to find corresponding records and when it does it compares a column of data.

This works OK (a little slow maybe), but unfortunately the second file contains a little more than the Excel maximum 1,048,576 rows.

How hard is it to load the second text file into memory, say a dictionary and then do the comparrison. Any pointers?

Thanks...
 

sandy666

Well-known Member
Joined
Oct 24, 2015
Messages
3,816
try PowerQuery (Get&Transform) : merge with InnerJoin
 

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