Comparing large text files in Base
Posted: Tue Jul 23, 2013 3:12 am
I've looked around but haven't found anyone asking my question so I am posting here - hopefully someone can help me out!
I've used Access and Paradox 15+ years ago but haven't touched a database since then. I'm familiar with the basics (tables, queries, reports) but its all really out of date knowledge.
I am trying to find duplicate phone numbers in two text files. They are large - one is 45 million records - so I am unable to open in Calc or Excel they way I usually would.
I need to do two things:
1. Standardize the content. One is just digits e.g. 5555551212 and the other has dashes, e.g. 555-555-1212. I need to run some kind of query or report to remove the dashes in the 2nd one.
2. Run a query or report to find the numbers in one file that are also in the other file and export that list.
I've created a new database and added the text files as sources but I can't seem to do much more. What am I missing?
Most options are greyed out. "Create table in design view", everything under Forms and Reports. All I can do it create a query, but the option to "Add table" so I can compare the two is also greyed out.
I assume this is because I'm working with the text files. When I create a table from scratch all the options are there but I don't see any way to import the data from the text files.
Any idea what I'm doing wrong?
Many thanks in advance for the help!
I've used Access and Paradox 15+ years ago but haven't touched a database since then. I'm familiar with the basics (tables, queries, reports) but its all really out of date knowledge.
I am trying to find duplicate phone numbers in two text files. They are large - one is 45 million records - so I am unable to open in Calc or Excel they way I usually would.
I need to do two things:
1. Standardize the content. One is just digits e.g. 5555551212 and the other has dashes, e.g. 555-555-1212. I need to run some kind of query or report to remove the dashes in the 2nd one.
2. Run a query or report to find the numbers in one file that are also in the other file and export that list.
I've created a new database and added the text files as sources but I can't seem to do much more. What am I missing?
Most options are greyed out. "Create table in design view", everything under Forms and Reports. All I can do it create a query, but the option to "Add table" so I can compare the two is also greyed out.
I assume this is because I'm working with the text files. When I create a table from scratch all the options are there but I don't see any way to import the data from the text files.
Any idea what I'm doing wrong?
Many thanks in advance for the help!