Jump to content

Comparing Two Files to find Differences


This topic is 7254 days old. Please don't post here. Open a new topic instead.

Recommended Posts

  • Newbies

I have two files of about 35,000 names and addresses, one before two months of "updates" the other "current" but due to computer problems some names (records) were lost, and some fields within records were lost (empty), about 2,000 records lost or corrupted. I want to run a "compare" to spit out a list of the lost/corrupted records to look at and determine which were truly lost and which were legitimately deleted. Is there a way to do this in Filemaker? I work with databases a lot but am not a database expert, I have never tried this. Any advice would be appreciated. THANKS - Jackie P.

Link to comment
Share on other sites

Here is one idea:

Create a new calculated field in each database called, for example, MatchField. Define it as a concatenation of all the fields in the databases you would like to compare:

MatchField = Name&Address&City&ZipCode&etc...(Make sure the calculation result is text.

Define this field in both databases.

Now, define a relationship based on a match between the MatchField in each file.

In the first file, create a calculation field called MatchChecker. Define it as Count(RelationshipName::MatchField). Any exact matches will return 1. Exact duplicates will return a number greater than 1. Nonmatches will return blank. You can perform a find on this MatchChecker field to determine which records don't match up. Enter Find mode, type in 1, check omit, and you get all your non-matches.

I can send a couple of sample files if that would help.

Link to comment
Share on other sites

This topic is 7254 days old. Please don't post here. Open a new topic instead.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share

×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.