Using AVERAGE with Time Series Examples | Teradata Vantage - Examples: Using AVERAGE with Time Series - Advanced SQL Engine - Teradata Database

Example: Calculating an Average for PTI and non-PTI Tables

The following example shows how the AVG function can be used with both Primary Time Index (PTI) and non-PTI tables.

The examples use the tables and data setup in Table and Data Definition for Time Series Aggregates Examples.

/*PTI Table*/
SELECT $TD_TIMECODE_RANGE, $TD_GROUP_BY_TIME, BUOYID, AVG(TEMPERATURE), COUNT(*)
FROM OCEAN_BUOYS
WHERE TD_TIMECODE BETWEEN TIMESTAMP '2014-01-06 08:00:00' AND TIMESTAMP '2014-01-06 10:30:00'
GROUP BY TIME (MINUTES(10) AND BUOYID)
ORDER BY 2, 3;

/*Non-PTI Table*/
SELECT $TD_TIMECODE_RANGE, $TD_GROUP_BY_TIME, BUOYID, AVG(TEMPERATURE), COUNT(*)
FROM OCEAN_BUOYS_NONPTI
WHERE TIMECODE BETWEEN TIMESTAMP '2014-01-06 08:00:00' AND TIMESTAMP '2014-01-06 10:30:00'
GROUP BY TIME (MINUTES(10) AND BUOYID)
USING TIMECODE(TIMECODE)
ORDER BY 2, 3;

Result:

Example: Using the HAVING Clause to Filter the AVG Function Results for PTI and non-PTI Tables

The following example shows how the AVG function can be used with the HAVING clause to filter the results.

The examples use the tables and data setup in Table and Data Definition for Time Series Aggregates Examples.

/*PTI Table*/
SELECT $TD_TIMECODE_RANGE, $TD_GROUP_BY_TIME, BUOYID, AVG(TEMPERATURE), COUNT(*)
FROM OCEAN_BUOYS
WHERE TD_TIMECODE BETWEEN TIMESTAMP '2014-01-06 08:00:00' AND TIMESTAMP '2014-01-06 10:30:00'
GROUP BY TIME (MINUTES(10) AND BUOYID)
HAVING AVG(TEMPERATURE) > 50
ORDER BY 2, 3;

/*Non-PTI Table*/
SELECT $TD_TIMECODE_RANGE, $TD_GROUP_BY_TIME, BUOYID, AVG(TEMPERATURE), COUNT(*)
FROM OCEAN_BUOYS_NONPTI
WHERE TIMECODE BETWEEN TIMESTAMP '2014-01-06 08:00:00' AND TIMESTAMP '2014-01-06 10:30:00'
GROUP BY TIME (MINUTES(10) AND BUOYID)
USING TIMECODE(TIMECODE)
HAVING AVG(TEMPERATURE) > 50
ORDER BY 2, 3;

Result: