AM or PM can be in uppercase or lowercase and must be preceded by a single blank. The timeslice operator aggregates data by time period, so you can create bucketed results based on a fixed interval (for example, five-minute buckets).The minute part can be omitted, for example, 1:00 PM is equivalent to 1 PM.If time literals use the USA format, they also conform to the following rules: If the USA format is not used and both minute and second are all zeros, the time literal can be the only hour such as 13 instead of 13:00:00.The second part of a time literal can be omitted.The leading zeros of the hour parts can be skipped, for example, 01:00:00 is the same as 1:00:00.Time literals cannot have leading blanks but can have trailing blanks.Time literals must conform to the following rules: Japanese industrial standard Christian era I am trying to group some records into 5-, 15-, 30- and 60-minute intervals: SELECT AVG(value) as 'AvgValue', sampledate/(560) as 'TimeFive' FROM DATA WHERE id 123 AND sampledate > i want to run several queries, each would group my average values into the desired time increments. The first, second, and third bytes represent the hour, minute, and second respectively.ĭb2 stores time values in a special internal format and converts the time values to one of the following formats for the output: Format name Each byte consists of two packed decimal digits. Internally, DB2 uses three bytes to store a time value. You should read it from inside out.Code language: SQL (Structured Query Language) ( sql ) NOTE: I've divided this in 3 subqueries for clarity. the 'T00:00:00' is the starting point for the periodsĭatediff(minute, 'T00:00:00', T.Time)/5 AS FiveMinutesPeriod, note the division by 5 and the "minute" to build the 5 minute periods This calculates the period (five minutes in this instance) To add a new TIMESTAMP column named d : ALTER TABLE t2 ADD d TIMESTAMP. this groups by the period and gets the average ALTER TABLE t2 MODIFY a TINYINT NOT NULL, CHANGE b c CHAR(20). note the 5, the "minute", and the starting point to convert theĭATEADD(minute, AP.FiveMinutesPeriod * 5, 'T00:00:00') AS Period,
DB2 TIMESLICE TIMESTAMP SQL 15 MINUTES 30 MINUTES HOURLY UPDATE
UPDATE As the original question was edited to require the data to be shown in date-time format after the grouping, I've added this simple query that will do what the OP wants: - This convert the period to date-time format group by datediff(minute, 'T00:00:00', yourDatetime) /5 If you are using expressions for partial days, such as 1/24 (1 hour) or 1/24/60 (1 minute), ensure that the numbercompat database configuration parameter is set to ON so that the division is. I've cheked it will be evaluated as an integer division, so you'll get an integer number you can use to group by. For example, TIMESTAMP ' 12:00:00' + 1.3 adds 1 day, 7 hours, and 12 minutes to the TIMESTAMP value, resulting in ' 19:12:00'. The number of digits in the fractional seconds portion is. The time portion of a timestamp value can includes a specification of fractional seconds. Then you can divide by 5, 15, 30 or 60, and group by the result of this division. A timestamp is a six-part or seven-part value (year, month, day, hour, minute, second, and optional fractional second) with an optional time zone specification, that represents a date and time. Will give you the number of minutes since (you can use the desired base date). Using datediff(minute, 'T00:00:00', yourDatetime)
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