Question

I have a mysql table named payment and there is a field in it called next_due_date which holds a manually entered date value from the user in yyyy-mm-dd format and the type is VARCHAR. I tried

  select * from payment where next_due_date  >= '$strtdate' AND next_due_date  <= '$endDate';

$strtdate holds current date and $endDate holds the date value before 30 days from the current date.

Answer 1

Logic issues – you are asking for records where the next_due_date is AFTER today AND where the next_due_date is BEFORE 30 days ago. Think about that and you’ll see why you get no records 🙂

You probably want something more like:

 select * from payment where next_due_date  <= '$strtdate' AND next_due_date  >= '$endDate';

Although that still looks ‘weird’ – probably because instead of:
“$strtdate holds current date and $endDate holds the date value before 30 days from the current date.”

Perhaps you want:
$strtdate holds 30 days before now and $endDate holds the current date.

THEN you can have:

from payment where next_due_date >= ‘$strtdate’ AND next_due_date <= ‘$endDate’;