根据另一个表中的日期选择日期范围内的行。 (MYSQL)

Question

I have two tables, which share a key that link the two. Table A has a date column (of the format MM\/DD\/YYYY), and table B has a date field of the format (YYYY-MM-DD HH:MM:SS).

select *, 
DATE_FORMAT(STR_TO_DATE(`Eff_date`, '%m/%d/%Y'), '%Y-%m-%d') as formattedEffective 
from `customers`
    right join `dispatch` on `customers`.`Member_no` = `dispatch`.`Member_no` 
        AND `dispatch`.`sortdate` > formattedEffective 
        AND `dispatch`.`sortdate` < DATE_ADD(formattedEffective,INTERVAL 30 DAY)

Answer 1

What the community is asking for is the ability to create a scenario to give a definitive answer to your question (create table statements, sample data, etc..). The approach below is speculation.

The assumption the query makes is eff_date is a string and sortdate is stored as a MySQL date (ie, date, datetime, timestamp).

select d.*,
       str_to_date(c.eff_date, '%m/%d/%Y') ) as formattedEffective 
  from customer c
  join dispatch d on (   d.member_no = c.member_no
                     and d.sortdate between str_to_date(c.eff_date, '%m/%d/%Y')
                                        and str_to_date(c.eff_date, '%m/%d/%Y')  + interval 30 day );

Answer 2

In case the above answer does not work, move the matching range to where condition.

select d.*,
       str_to_date(c.eff_date, '%m/%d/%Y') ) as formattedEffective 
  from customer c
  join dispatch d on (   d.member_no = c.member_no) 
  where d.sortdate between str_to_date(c.eff_date, '%m/%d/%Y')
                                        and str_to_date(c.eff_date, '%m/%d/%Y')  + interval 30 day );