Question

I have a csv file with 70,000 records and I need to compare dates.

These are currently stored for example DD/MM/YYYY

I believe that sqlite requires them to be stored YYYY-MM-DD so that I can use date functions on them.

Is there any easy way to convert the format of all of these records?

Many thanks

Answer 1

Get something like Notepad++ / Textpad and do a search and replace:

Textpad    \([0-9]{2}\)/\([0-9]{2}\)/\([0-9]{4}\)
Notepad++  ([0-9]{2})/([0-9]{2})/([0-9]{4})

Replace with: \3-\2-\1 

Make sure you’re searching with regular expressions/extended searching