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I have a column with time of measurments in timestamps in INT, and I need group data by interval of a hour. I already discovered MySQL function FROM_UNIXTIME(), but is there internal instrument in MySQL to extract hour from results of this function?
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MySQL FROM_UNIXTIME() function is used to return the date/datetime from a version of Unix timestamp. The format of return value would be either 'YYYY-MM-DD HH:MM:SS' or 'YYYYMMDDHHMMSS.
MySQL HOUR() function MySQL HOUR() returns the HOUR of a time. The return value is within the range of 0 to 23 for time-of-day values. The range of time values may be larger than 23. Where time is a time.
CURRENT_TIME() function in MySQL is used to check the current time. It returns the current time as a value in 'hh:mm:ss' or hhmmss format, depending on whether the function is used in string or numeric context.
The HOUR() function returns the hour part for a given date (from 0 to 838).
I think you mean FROM_UNIXTIME
GROUP BY
DATE_FORMAT(FROM_UNIXTIME(time_column), '%Y %m %d %H'))
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