Question:
I need to retrieve all rows from a table where the created_at timestamp is during a certain hour ... say 04:00 and 05:00. Anyone know how to do this?
Solution:1
RecordNameHere.find_by_sql("SELECT * FROM `table_name_here` WHERE HOUR(created_at) = HOUR('4:01:00')") The MySQL documentation is awesome: http://dev.mysql.com/doc/refman/5.1/en/date-and-time-functions.html#function_hour
Solution:2
For multiple hour range (eg: records between in 4:00 to 6:00)
User.all(:conditions => "HOUR(created_at) BETWEEN ? AND ?", 4, 5) For single hour use the following syntax:
User.all(:conditions => "HOUR(created_at) = ?", 4) Note 1 The HOUR method returns the hour in 24 hour format. Provide the hour value accordingly.
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