PTI tables have their own timecode column. To override TD_TIMECODE as the default timecode column, specify it in the USING TIMECODE clause. For example, suppose the OCEAN_BUOYS table had another column called my_timecode that was of TIMESTAMP(6) type. Note that when the USING TIMECODE clause is not specified, the timecode column is the default system generated TD_TIMECODE column when a PTI table is given in the query:
-- use default timecode TD_TIMECODE select avg(temperature) from ocean_buoys group by time(minutes(10)); -- override default create table my_ocean_buoys as ocean_buoys with no data; alter table my_ocean_buoys add my_timecode timestamp(6); show table my_ocean_buoys; CREATE SET TABLE my_ocean_buoys ,NO FALLBACK , NO BEFORE JOURNAL, NO AFTER JOURNAL, CHECKSUM = DEFAULT, DEFAULT MERGEBLOCKRATIO ( TD_TIMEBUCKET BIGINT NOT NULL GENERATED SYSTEM TIMECOLUMN, TD_TIMECODE TIMESTAMP(6) NOT NULL GENERATED TIMECOLUMN, BUOYID INTEGER, SALINITY INTEGER, TEMPERATURE INTEGER, my_timecode TIMESTAMP(6)) PRIMARY TIME INDEX (TIMESTAMP(6), DATE '2012-01-01', HOURS(1), COLUMNS(BUOYID), NONSEQUENCED); -- use my_timecode instead of TD_TIMECODE. select avg(temperature) from my_ocean_buoys group by time(minutes(100)) using timecode(my_timecode);