CREATE TABLE range_select_projection ( ts TIMESTAMP TIME INDEX, station STRING, "channel" STRING, unused_tag STRING, value_a DOUBLE, value_b DOUBLE, unused_value DOUBLE, PRIMARY KEY (station, "channel", unused_tag), ); Affected Rows: 0 INSERT INTO range_select_projection VALUES (0, 'station-a', 'channel-a', 'unused-a', 1.0, 10.0, 100.0), (5000, 'station-a', 'channel-a', 'unused-a', 2.0, 20.0, 200.0), (10000, 'station-a', 'channel-a', 'unused-a', 3.0, 30.0, 300.0), (0, 'station-a', 'channel-b', 'unused-b', 4.0, 40.0, 400.0), (5000, 'station-a', 'channel-b', 'unused-b', 5.0, 50.0, 500.0); Affected Rows: 5 -- SQLNESS REPLACE (-+) - -- SQLNESS REPLACE (\s\s+) _ -- SQLNESS REPLACE (elapsed_compute.*) REDACTED -- SQLNESS REPLACE (peers.*) REDACTED -- SQLNESS REPLACE (metrics.*) REDACTED -- SQLNESS REPLACE (partitioning.*) REDACTED -- SQLNESS REPLACE region=\d+\(\d+,\s+\d+\) region=REDACTED -- SQLNESS REPLACE Total\s+rows:\s+\d+ Total rows: REDACTED -- SQLNESS REPLACE Dictionary\(UInt32,\s*Utf8\(([^)]*)\)\) Utf8($1) EXPLAIN ANALYZE VERBOSE SELECT ts, station, "channel", avg(value_a + value_b) RANGE '10s' AS avg_value FROM range_select_projection WHERE station = 'station-a' AND unused_tag = 'unused-a' AND ts >= '1970-01-01 00:00:00' AND ts < '1970-01-01 00:00:15' ALIGN '5s' BY (station, "channel") ORDER BY station, "channel", ts; +-+-+-+ | stage | node | plan_| +-+-+-+ | 0_| 0_|_SortExec: expr=[station@1 ASC NULLS LAST, channel@2 ASC NULLS LAST, ts@0 ASC NULLS LAST], preserve_REDACTED |_|_|_ProjectionExec: expr=[ts@1 as ts, station@2 as station, channel@3 as channel, avg(range_select_projection.value_a + range_select_projection.value_b) RANGE 10s@0 as avg_value] REDACTED |_|_|_RangeSelectExec: range_expr=[avg(range_select_projection.value_a + range_select_projection.value_b) RANGE 10s], align=5000ms, align_to=0ms, align_by=[station@1, channel@2], time_index=ts REDACTED |_|_|_CooperativeExec REDACTED |_|_|_MergeScanExec: REDACTED |_|_|_| | 1_| 0_|_CooperativeExec REDACTED |_|_|_SeqScan: region=REDACTED, {"partition_count":{"count":1, "mem_ranges":1, "files":0, "file_ranges":0}, "projection": ["ts", "station", "channel", "value_a", "value_b"], "filters": ["station = Utf8(\"station-a\")", "unused_tag = Utf8(\"unused-a\")", "ts >= TimestampMillisecond(0, None)", "ts < TimestampMillisecond(15000, None)"], "flat_format": true, "REDACTED |_|_|_| |_|_| Total rows: REDACTED_| +-+-+-+ SELECT ts, station, "channel", avg(value_a + value_b) RANGE '10s' AS avg_value FROM range_select_projection WHERE station = 'station-a' AND unused_tag = 'unused-a' AND ts >= '1970-01-01 00:00:00' AND ts < '1970-01-01 00:00:15' ALIGN '5s' BY (station, "channel") ORDER BY station, "channel", ts; +---------------------+-----------+-----------+-----------+ | ts | station | channel | avg_value | +---------------------+-----------+-----------+-----------+ | 1969-12-31T23:59:55 | station-a | channel-a | 11.0 | | 1970-01-01T00:00:00 | station-a | channel-a | 16.5 | | 1970-01-01T00:00:05 | station-a | channel-a | 27.5 | | 1970-01-01T00:00:10 | station-a | channel-a | 33.0 | +---------------------+-----------+-----------+-----------+ DROP TABLE range_select_projection; Affected Rows: 0