php - Struggling to get month name by using mysql join query -

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i want month name below query :

select     a.`user_name`,     month(b.`registered_month`)     `users` a,    `registered_details` b     a.`user_id`=b.`user_id`

but returns null value in month(b.registered_month) field.

the month function work on date fields. returns numeric month of given date (i.e. 1 2014-01-01). there function called monthname gives name of month of given date.

one other note query. typically, join should use on instead of join tables.

 `users` join   `registered_details` b  on    a.`user_id`=b.`user_id`

edit since registered_month numeric value (1,2,3 etc), you'll need use case statement

select   case b.registered_month   when 1 'january'   when 2 'february'   end case themonth

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