Question

I have date stored as string in an sqlite database like “28/11/2010”.
I want to convert the string to date.

Specifically I have to convert lots of string dates between two dates.

In postgresql, I use to_date('30/11/2010','dd/MM/yyyy'), how can I do the same thing with sqlite?

Something like this:

SELECT * FROM table
    WHERE   to_date(column,'dd/MM/yyyy')
    BETWEEN to_date('01/11/2010','dd/MM/yyyy')
    AND     to_date('30/11/2010','dd/MM/yyyy')

Answer 1

As SQLite doesn’t have a date type you will need to do string comparison to achieve this. For that to work you need to reverse the order – eg from dd/MM/yyyy to yyyyMMdd, using something like

where substr(column,7)||substr(column,4,2)||substr(column,1,2) 
      between '20101101' and '20101130'