Rounding a MYSQL datetime to earliest 15 minute interval in milliseconds (PHP)

Question

I\'m fetching a datetime from MYSQL which looks like:

2010-08-11 11:18:28

I need to convert it into the \"floor\" or the earliest 15 minute interval and outp

Answer 1

Give this a try and see what happens:

select DATE(myColumn) 
       + CONVERT(HOUR(myColumn),CHAR(2)) + ':'
       + CASE 
         WHEN MINUTE(myColumn) < 15 THEN '00'
         WHEN MINUTE(myColumn) < 30 THEN '15'
         WHEN MINUTE(myColumn) < 45 THEN '30'
         ELSE '45'
       END 
       + ':00' as myDate