sql - Selecting rows that are within a date range based on a date from another table. (MYSQL) -


i have 2 tables, share key link two. table has date column (of format mm/dd/yyyy), , table b has date field of format (yyyy-mm-dd hh:mm:ss).

what need select in table b, have key matching table , date field within 30 days of date field found in table a.

edit: both variables varchars, here have (error using alias formattedeffective in join). think below work, if use aliases in way.

select *,  date_format(str_to_date(`eff_date`, '%m/%d/%y'), '%y-%m-%d') formattedeffective  `customers`     right join `dispatch` on `customers`.`member_no` = `dispatch`.`member_no`          , `dispatch`.`sortdate` > formattedeffective          , `dispatch`.`sortdate` < date_add(formattedeffective,interval 30 day)

what community asking ability create scenario give definitive answer question (create table statements, sample data, etc..). approach below speculation.

the assumption query makes eff_date string , sortdate stored mysql date (i.e., date, datetime, timestamp).

select d.*,        str_to_date(c.eff_date, '%m/%d/%y') ) formattedeffective    customer c   join dispatch d on (   d.member_no = c.member_no                      , d.sortdate between str_to_date(c.eff_date, '%m/%d/%y')                                         , str_to_date(c.eff_date, '%m/%d/%y')  + interval 30 day );

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