What Is Malloy
Bar Charts
The examples below all use the following semantic model.
## renderer_next source: flights is duckdb.table('../data/flights.parquet') extend { where: dep_time = @2001 join_one: carriers is duckdb.table('../data/carriers.parquet') on carrier = carriers.code measure: flight_count is count() aircraft_count is count(tail_num) }
Line charts take two or three parameters.
First parameter - X-axis is time field or numeric expression
Second parameter - Y-axis is a numeric expression
Third (optional) Pivot is dimensional field (numeric or string)
Single line line_chart
# line_chart run: flights -> { group_by: departure_month is dep_time.month aggregate: flight_count order_by: departure_month }
[ { "departure_month": "2001-01-01T00:00:00.000Z", "flight_count": 4071 }, { "departure_month": "2001-02-01T00:00:00.000Z", "flight_count": 3672 }, { "departure_month": "2001-03-01T00:00:00.000Z", "flight_count": 3869 }, { "departure_month": "2001-04-01T00:00:00.000Z", "flight_count": 4328 }, { "departure_month": "2001-05-01T00:00:00.000Z", "flight_count": 4407 }, { "departure_month": "2001-06-01T00:00:00.000Z", "flight_count": 4451 }, { "departure_month": "2001-07-01T00:00:00.000Z", "flight_count": 4440 }, { "departure_month": "2001-08-01T00:00:00.000Z", "flight_count": 4607 }, { "departure_month": "2001-09-01T00:00:00.000Z", "flight_count": 3616 }, { "departure_month": "2001-10-01T00:00:00.000Z", "flight_count": 3809 }, { "departure_month": "2001-11-01T00:00:00.000Z", "flight_count": 3819 }, { "departure_month": "2001-12-01T00:00:00.000Z", "flight_count": 4086 } ]
SELECT DATE_TRUNC('month', base."dep_time") as "departure_month", COUNT(1) as "flight_count" FROM '../data/flights.parquet' as base WHERE (base."dep_time">=TIMESTAMP '2001-01-01 00:00:00') and (base."dep_time"<TIMESTAMP '2002-01-01 00:00:00') GROUP BY 1 ORDER BY 1 ASC NULLS LAST
Multi line line_chart
There are two modes to generate mulitple lines in a chart. You can group by an additional parameter (that shows the results as lines) or you can explicitly tag the y-axis parameters.
The third parameter in a line chart adds a line for each dimension found.
# line_chart run: flights -> { group_by: departure_month is dep_time.month aggregate: flight_count group_by: carriers.nickname order_by: departure_month }
[ { "departure_month": "2001-01-01T00:00:00.000Z", "flight_count": 656, "nickname": "USAir" }, { "departure_month": "2001-01-01T00:00:00.000Z", "flight_count": 201, "nickname": "United" }, { "departure_month": "2001-01-01T00:00:00.000Z", "flight_count": 437, "nickname": "Delta" }, { "departure_month": "2001-01-01T00:00:00.000Z", "flight_count": 134, "nickname": "Continental" }, { "departure_month": "2001-01-01T00:00:00.000Z", "flight_count": 1315, "nickname": "Southwest" }, { "departure_month": "2001-01-01T00:00:00.000Z", "flight_count": 533, "nickname": "American" }, { "departure_month": "2001-01-01T00:00:00.000Z", "flight_count": 184, "nickname": "America West" }, { "departure_month": "2001-01-01T00:00:00.000Z", "flight_count": 493, "nickname": "Northwest" }, { "departure_month": "2001-01-01T00:00:00.000Z", "flight_count": 118, "nickname": "Alaska" }, { "departure_month": "2001-02-01T00:00:00.000Z", "flight_count": 1212, "nickname": "Southwest" }, { "departure_month": "2001-02-01T00:00:00.000Z", "flight_count": 154, "nickname": "America West" }, { "departure_month": "2001-02-01T00:00:00.000Z", "flight_count": 464, "nickname": "Northwest" }, { "departure_month": "2001-02-01T00:00:00.000Z", "flight_count": 443, "nickname": "American" }, { "departure_month": "2001-02-01T00:00:00.000Z", "flight_count": 138, "nickname": "Alaska" }, { "departure_month": "2001-02-01T00:00:00.000Z", "flight_count": 387, "nickname": "Delta" }, { "departure_month": "2001-02-01T00:00:00.000Z", "flight_count": 92, "nickname": "Continental" }, { "departure_month": "2001-02-01T00:00:00.000Z", "flight_count": 230, "nickname": "United" }, { "departure_month": "2001-02-01T00:00:00.000Z", "flight_count": 552, "nickname": "USAir" }, { "departure_month": "2001-03-01T00:00:00.000Z", "flight_count": 514, "nickname": "American" }, { "departure_month": "2001-03-01T00:00:00.000Z", "flight_count": 747, "nickname": "Southwest" }, { "departure_month": "2001-03-01T00:00:00.000Z", "flight_count": 150, "nickname": "America West" }, { "departure_month": "2001-03-01T00:00:00.000Z", "flight_count": 478, "nickname": "Northwest" }, { "departure_month": "2001-03-01T00:00:00.000Z", "flight_count": 127, "nickname": "Alaska" }, { "departure_month": "2001-03-01T00:00:00.000Z", "flight_count": 589, "nickname": "Delta" }, { "departure_month": "2001-03-01T00:00:00.000Z", "flight_count": 25, "nickname": "Continental" }, { "departure_month": "2001-03-01T00:00:00.000Z", "flight_count": 318, "nickname": "United" }, { "departure_month": "2001-03-01T00:00:00.000Z", "flight_count": 589, "nickname": "USAir" }, { "departure_month": "2001-03-01T00:00:00.000Z", "flight_count": 332, "nickname": "American Eagle" }, { "departure_month": "2001-04-01T00:00:00.000Z", "flight_count": 553, "nickname": "Delta" }, { "departure_month": "2001-04-01T00:00:00.000Z", "flight_count": 112, "nickname": "Continental" }, { "departure_month": "2001-04-01T00:00:00.000Z", "flight_count": 1218, "nickname": "Southwest" }, { "departure_month": "2001-04-01T00:00:00.000Z", "flight_count": 523, "nickname": "American" }, { "departure_month": "2001-04-01T00:00:00.000Z", "flight_count": 478, "nickname": "Northwest" }, { "departure_month": "2001-04-01T00:00:00.000Z", "flight_count": 120, "nickname": "Alaska" }, { "departure_month": "2001-04-01T00:00:00.000Z", "flight_count": 101, "nickname": "America West" }, { "departure_month": "2001-04-01T00:00:00.000Z", "flight_count": 641, "nickname": "USAir" }, { "departure_month": "2001-04-01T00:00:00.000Z", "flight_count": 305, "nickname": "American Eagle" }, { "departure_month": "2001-04-01T00:00:00.000Z", "flight_count": 277, "nickname": "United" }, { "departure_month": "2001-05-01T00:00:00.000Z", "flight_count": 1216, "nickname": "Southwest" }, { "departure_month": "2001-05-01T00:00:00.000Z", "flight_count": 466, "nickname": "American" }, { "departure_month": "2001-05-01T00:00:00.000Z", "flight_count": 151, "nickname": "America West" }, { "departure_month": "2001-05-01T00:00:00.000Z", "flight_count": 139, "nickname": "Alaska" }, { "departure_month": "2001-05-01T00:00:00.000Z", "flight_count": 491, "nickname": "Northwest" }, { "departure_month": "2001-05-01T00:00:00.000Z", "flight_count": 535, "nickname": "Delta" }, { "departure_month": "2001-05-01T00:00:00.000Z", "flight_count": 124, "nickname": "Continental" }, { "departure_month": "2001-05-01T00:00:00.000Z", "flight_count": 312, "nickname": "United" }, { "departure_month": "2001-05-01T00:00:00.000Z", "flight_count": 327, "nickname": "American Eagle" }, { "departure_month": "2001-05-01T00:00:00.000Z", "flight_count": 646, "nickname": "USAir" }, { "departure_month": "2001-06-01T00:00:00.000Z", "flight_count": 1254, "nickname": "Southwest" }, { "departure_month": "2001-06-01T00:00:00.000Z", "flight_count": 543, "nickname": "American" }, { "departure_month": "2001-06-01T00:00:00.000Z", "flight_count": 160, "nickname": "America West" }, { "departure_month": "2001-06-01T00:00:00.000Z", "flight_count": 512, "nickname": "Northwest" }, { "departure_month": "2001-06-01T00:00:00.000Z", "flight_count": 133, "nickname": "Alaska" }, { "departure_month": "2001-06-01T00:00:00.000Z", "flight_count": 485, "nickname": "Delta" }, { "departure_month": "2001-06-01T00:00:00.000Z", "flight_count": 110, "nickname": "Continental" }, { "departure_month": "2001-06-01T00:00:00.000Z", "flight_count": 338, "nickname": "United" }, { "departure_month": "2001-06-01T00:00:00.000Z", "flight_count": 309, "nickname": "American Eagle" }, { "departure_month": "2001-06-01T00:00:00.000Z", "flight_count": 607, "nickname": "USAir" }, { "departure_month": "2001-07-01T00:00:00.000Z", "flight_count": 367, "nickname": "American Eagle" }, { "departure_month": "2001-07-01T00:00:00.000Z", "flight_count": 583, "nickname": "USAir" }, { "departure_month": "2001-07-01T00:00:00.000Z", "flight_count": 272, "nickname": "United" }, { "departure_month": "2001-07-01T00:00:00.000Z", "flight_count": 498, "nickname": "Delta" }, { "departure_month": "2001-07-01T00:00:00.000Z", "flight_count": 123, "nickname": "Continental" }, { "departure_month": "2001-07-01T00:00:00.000Z", "flight_count": 1299, "nickname": "Southwest" }, { "departure_month": "2001-07-01T00:00:00.000Z", "flight_count": 522, "nickname": "American" }, { "departure_month": "2001-07-01T00:00:00.000Z", "flight_count": 142, "nickname": "America West" }, { "departure_month": "2001-07-01T00:00:00.000Z", "flight_count": 143, "nickname": "Alaska" }, { "departure_month": "2001-07-01T00:00:00.000Z", "flight_count": 491, "nickname": "Northwest" }, { "departure_month": "2001-08-01T00:00:00.000Z", "flight_count": 1318, "nickname": "Southwest" }, { "departure_month": "2001-08-01T00:00:00.000Z", "flight_count": 557, "nickname": "American" }, { "departure_month": "2001-08-01T00:00:00.000Z", "flight_count": 153, "nickname": "America West" }, { "departure_month": "2001-08-01T00:00:00.000Z", "flight_count": 516, "nickname": "Northwest" }, { "departure_month": "2001-08-01T00:00:00.000Z", "flight_count": 133, "nickname": "Alaska" }, { "departure_month": "2001-08-01T00:00:00.000Z", "flight_count": 554, "nickname": "Delta" }, { "departure_month": "2001-08-01T00:00:00.000Z", "flight_count": 116, "nickname": "Continental" }, { "departure_month": "2001-08-01T00:00:00.000Z", "flight_count": 363, "nickname": "United" }, { "departure_month": "2001-08-01T00:00:00.000Z", "flight_count": 554, "nickname": "USAir" }, { "departure_month": "2001-08-01T00:00:00.000Z", "flight_count": 343, "nickname": "American Eagle" }, { "departure_month": "2001-09-01T00:00:00.000Z", "flight_count": 450, "nickname": "Delta" }, { "departure_month": "2001-09-01T00:00:00.000Z", "flight_count": 76, "nickname": "Continental" }, { "departure_month": "2001-09-01T00:00:00.000Z", "flight_count": 1150, "nickname": "Southwest" }, { "departure_month": "2001-09-01T00:00:00.000Z", "flight_count": 347, "nickname": "American" }, { "departure_month": "2001-09-01T00:00:00.000Z", "flight_count": 419, "nickname": "Northwest" }, { "departure_month": "2001-09-01T00:00:00.000Z", "flight_count": 67, "nickname": "Alaska" }, { "departure_month": "2001-09-01T00:00:00.000Z", "flight_count": 135, "nickname": "America West" }, { "departure_month": "2001-09-01T00:00:00.000Z", "flight_count": 227, "nickname": "American Eagle" }, { "departure_month": "2001-09-01T00:00:00.000Z", "flight_count": 449, "nickname": "USAir" }, { "departure_month": "2001-09-01T00:00:00.000Z", "flight_count": 296, "nickname": "United" }, { "departure_month": "2001-10-01T00:00:00.000Z", "flight_count": 456, "nickname": "USAir" }, { "departure_month": "2001-10-01T00:00:00.000Z", "flight_count": 290, "nickname": "American Eagle" }, { "departure_month": "2001-10-01T00:00:00.000Z", "flight_count": 361, "nickname": "United" }, { "departure_month": "2001-10-01T00:00:00.000Z", "flight_count": 346, "nickname": "Delta" }, { "departure_month": "2001-10-01T00:00:00.000Z", "flight_count": 110, "nickname": "Continental" }, { "departure_month": "2001-10-01T00:00:00.000Z", "flight_count": 1309, "nickname": "Southwest" }, { "departure_month": "2001-10-01T00:00:00.000Z", "flight_count": 455, "nickname": "American" }, { "departure_month": "2001-10-01T00:00:00.000Z", "flight_count": 94, "nickname": "America West" }, { "departure_month": "2001-10-01T00:00:00.000Z", "flight_count": 98, "nickname": "Alaska" }, { "departure_month": "2001-10-01T00:00:00.000Z", "flight_count": 290, "nickname": "Northwest" }, { "departure_month": "2001-11-01T00:00:00.000Z", "flight_count": 399, "nickname": "United" }, { "departure_month": "2001-11-01T00:00:00.000Z", "flight_count": 212, "nickname": "American Eagle" }, { "departure_month": "2001-11-01T00:00:00.000Z", "flight_count": 499, "nickname": "USAir" }, { "departure_month": "2001-11-01T00:00:00.000Z", "flight_count": 1224, "nickname": "Southwest" }, { "departure_month": "2001-11-01T00:00:00.000Z", "flight_count": 462, "nickname": "American" }, { "departure_month": "2001-11-01T00:00:00.000Z", "flight_count": 52, "nickname": "America West" }, { "departure_month": "2001-11-01T00:00:00.000Z", "flight_count": 113, "nickname": "Alaska" }, { "departure_month": "2001-11-01T00:00:00.000Z", "flight_count": 317, "nickname": "Northwest" }, { "departure_month": "2001-11-01T00:00:00.000Z", "flight_count": 101, "nickname": "Continental" }, { "departure_month": "2001-11-01T00:00:00.000Z", "flight_count": 440, "nickname": "Delta" }, { "departure_month": "2001-12-01T00:00:00.000Z", "flight_count": 1159, "nickname": "Southwest" }, { "departure_month": "2001-12-01T00:00:00.000Z", "flight_count": 486, "nickname": "American" }, { "departure_month": "2001-12-01T00:00:00.000Z", "flight_count": 115, "nickname": "America West" }, { "departure_month": "2001-12-01T00:00:00.000Z", "flight_count": 432, "nickname": "Northwest" }, { "departure_month": "2001-12-01T00:00:00.000Z", "flight_count": 108, "nickname": "Alaska" }, { "departure_month": "2001-12-01T00:00:00.000Z", "flight_count": 84, "nickname": "Continental" }, { "departure_month": "2001-12-01T00:00:00.000Z", "flight_count": 403, "nickname": "Delta" }, { "departure_month": "2001-12-01T00:00:00.000Z", "flight_count": 418, "nickname": "United" }, { "departure_month": "2001-12-01T00:00:00.000Z", "flight_count": 247, "nickname": "American Eagle" }, { "departure_month": "2001-12-01T00:00:00.000Z", "flight_count": 634, "nickname": "USAir" } ]
SELECT DATE_TRUNC('month', base."dep_time") as "departure_month", COUNT(1) as "flight_count", carriers_0."nickname" as "nickname" FROM '../data/flights.parquet' as base LEFT JOIN '../data/carriers.parquet' AS carriers_0 ON base."carrier"=carriers_0."code" WHERE (base."dep_time">=TIMESTAMP '2001-01-01 00:00:00') and (base."dep_time"<TIMESTAMP '2002-01-01 00:00:00') GROUP BY 1,3 ORDER BY 1 ASC NULLS LAST
Explicitly tagging the x and y axis.
# line_chart run: flights -> { group_by: # x departure_month is dep_time.month aggregate: # y south_west is flight_count {where: carriers.nickname = 'Southwest'} # y american is flight_count {where: carriers.nickname = 'American'} order_by: departure_month }
[ { "departure_month": "2001-01-01T00:00:00.000Z", "south_west": 1315, "american": 533 }, { "departure_month": "2001-02-01T00:00:00.000Z", "south_west": 1212, "american": 443 }, { "departure_month": "2001-03-01T00:00:00.000Z", "south_west": 747, "american": 514 }, { "departure_month": "2001-04-01T00:00:00.000Z", "south_west": 1218, "american": 523 }, { "departure_month": "2001-05-01T00:00:00.000Z", "south_west": 1216, "american": 466 }, { "departure_month": "2001-06-01T00:00:00.000Z", "south_west": 1254, "american": 543 }, { "departure_month": "2001-07-01T00:00:00.000Z", "south_west": 1299, "american": 522 }, { "departure_month": "2001-08-01T00:00:00.000Z", "south_west": 1318, "american": 557 }, { "departure_month": "2001-09-01T00:00:00.000Z", "south_west": 1150, "american": 347 }, { "departure_month": "2001-10-01T00:00:00.000Z", "south_west": 1309, "american": 455 }, { "departure_month": "2001-11-01T00:00:00.000Z", "south_west": 1224, "american": 462 }, { "departure_month": "2001-12-01T00:00:00.000Z", "south_west": 1159, "american": 486 } ]
SELECT DATE_TRUNC('month', base."dep_time") as "departure_month", (COUNT(CASE WHEN carriers_0."nickname"='Southwest' THEN 1 END)) as "south_west", (COUNT(CASE WHEN carriers_0."nickname"='American' THEN 1 END)) as "american" FROM '../data/flights.parquet' as base LEFT JOIN '../data/carriers.parquet' AS carriers_0 ON base."carrier"=carriers_0."code" WHERE (base."dep_time">=TIMESTAMP '2001-01-01 00:00:00') and (base."dep_time"<TIMESTAMP '2002-01-01 00:00:00') GROUP BY 1 ORDER BY 1 ASC NULLS LAST
Line Charts nested in tables
When line charts are nested in tables the size is reduced. Nested line charts increase the density of information provided by the result.
run: flights -> { group_by: destination aggregate: flight_count # line_chart nest: by_month is { group_by: departure_month is dep_time.month aggregate: flight_count group_by: carriers.nickname order_by: departure_month } limit: 5 }
[ { "destination": "DFW", "flight_count": 2604, "by_month": [ { "departure_month": "2001-01-01T00:00:00.000Z", "flight_count": 8, "nickname": "USAir" }, { "departure_month": "2001-01-01T00:00:00.000Z", "flight_count": 19, "nickname": "Delta" }, { "departure_month": "2001-01-01T00:00:00.000Z", "flight_count": 8, "nickname": "Continental" }, { "departure_month": "2001-01-01T00:00:00.000Z", "flight_count": 3, "nickname": "United" }, { "departure_month": "2001-01-01T00:00:00.000Z", "flight_count": 112, "nickname": "American" }, { "departure_month": "2001-01-01T00:00:00.000Z", "flight_count": 7, "nickname": "Northwest" }, { "departure_month": "2001-01-01T00:00:00.000Z", "flight_count": 2, "nickname": "America West" }, { "departure_month": "2001-02-01T00:00:00.000Z", "flight_count": 14, "nickname": "Delta" }, { "departure_month": "2001-02-01T00:00:00.000Z", "flight_count": 1, "nickname": "Continental" }, { "departure_month": "2001-02-01T00:00:00.000Z", "flight_count": 4, "nickname": "USAir" }, { "departure_month": "2001-02-01T00:00:00.000Z", "flight_count": 100, "nickname": "American" }, { "departure_month": "2001-02-01T00:00:00.000Z", "flight_count": 4, "nickname": "Northwest" }, { "departure_month": "2001-02-01T00:00:00.000Z", "flight_count": 2, "nickname": "America West" }, { "departure_month": "2001-03-01T00:00:00.000Z", "flight_count": 83, "nickname": "American Eagle" }, { "departure_month": "2001-03-01T00:00:00.000Z", "flight_count": 9, "nickname": "USAir" }, { "departure_month": "2001-03-01T00:00:00.000Z", "flight_count": 11, "nickname": "Delta" }, { "departure_month": "2001-03-01T00:00:00.000Z", "flight_count": 8, "nickname": "United" }, { "departure_month": "2001-03-01T00:00:00.000Z", "flight_count": 101, "nickname": "American" }, { "departure_month": "2001-03-01T00:00:00.000Z", "flight_count": 5, "nickname": "Northwest" }, { "departure_month": "2001-03-01T00:00:00.000Z", "flight_count": 2, "nickname": "America West" }, { "departure_month": "2001-04-01T00:00:00.000Z", "flight_count": 83, "nickname": "American Eagle" }, { "departure_month": "2001-04-01T00:00:00.000Z", "flight_count": 3, "nickname": "USAir" }, { "departure_month": "2001-04-01T00:00:00.000Z", "flight_count": 27, "nickname": "Delta" }, { "departure_month": "2001-04-01T00:00:00.000Z", "flight_count": 3, "nickname": "Continental" }, { "departure_month": "2001-04-01T00:00:00.000Z", "flight_count": 7, "nickname": "United" }, { "departure_month": "2001-04-01T00:00:00.000Z", "flight_count": 124, "nickname": "American" }, { "departure_month": "2001-04-01T00:00:00.000Z", "flight_count": 9, "nickname": "Northwest" }, { "departure_month": "2001-04-01T00:00:00.000Z", "flight_count": 2, "nickname": "America West" }, { "departure_month": "2001-05-01T00:00:00.000Z", "flight_count": 16, "nickname": "Delta" }, { "departure_month": "2001-05-01T00:00:00.000Z", "flight_count": 1, "nickname": "Continental" }, { "departure_month": "2001-05-01T00:00:00.000Z", "flight_count": 85, "nickname": "American Eagle" }, { "departure_month": "2001-05-01T00:00:00.000Z", "flight_count": 9, "nickname": "USAir" }, { "departure_month": "2001-05-01T00:00:00.000Z", "flight_count": 111, "nickname": "American" }, { "departure_month": "2001-05-01T00:00:00.000Z", "flight_count": 3, "nickname": "America West" }, { "departure_month": "2001-05-01T00:00:00.000Z", "flight_count": 3, "nickname": "Northwest" }, { "departure_month": "2001-05-01T00:00:00.000Z", "flight_count": 6, "nickname": "United" }, { "departure_month": "2001-06-01T00:00:00.000Z", "flight_count": 123, "nickname": "American" }, { "departure_month": "2001-06-01T00:00:00.000Z", "flight_count": 5, "nickname": "America West" }, { "departure_month": "2001-06-01T00:00:00.000Z", "flight_count": 9, "nickname": "Northwest" }, { "departure_month": "2001-06-01T00:00:00.000Z", "flight_count": 4, "nickname": "United" }, { "departure_month": "2001-06-01T00:00:00.000Z", "flight_count": 24, "nickname": "Delta" }, { "departure_month": 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"departure_month": "2001-10-01T00:00:00.000Z", "flight_count": 12, "nickname": "Alaska" }, { "departure_month": "2001-10-01T00:00:00.000Z", "flight_count": 2, "nickname": "America West" }, { "departure_month": "2001-10-01T00:00:00.000Z", "flight_count": 1, "nickname": "Delta" }, { "departure_month": "2001-11-01T00:00:00.000Z", "flight_count": 3, "nickname": "Delta" }, { "departure_month": "2001-11-01T00:00:00.000Z", "flight_count": 3, "nickname": "USAir" }, { "departure_month": "2001-11-01T00:00:00.000Z", "flight_count": 11, "nickname": "Northwest" }, { "departure_month": "2001-11-01T00:00:00.000Z", "flight_count": 24, "nickname": "American" }, { "departure_month": "2001-11-01T00:00:00.000Z", "flight_count": 52, "nickname": "Southwest" }, { "departure_month": "2001-11-01T00:00:00.000Z", "flight_count": 10, "nickname": "Alaska" }, { "departure_month": "2001-11-01T00:00:00.000Z", "flight_count": 24, "nickname": "United" }, { "departure_month": "2001-12-01T00:00:00.000Z", "flight_count": 10, "nickname": "Northwest" }, { "departure_month": "2001-12-01T00:00:00.000Z", "flight_count": 81, "nickname": "Southwest" }, { "departure_month": "2001-12-01T00:00:00.000Z", "flight_count": 23, "nickname": "American" }, { "departure_month": "2001-12-01T00:00:00.000Z", "flight_count": 6, "nickname": "Alaska" }, { "departure_month": "2001-12-01T00:00:00.000Z", "flight_count": 5, "nickname": "America West" }, { "departure_month": "2001-12-01T00:00:00.000Z", "flight_count": 19, "nickname": "United" } ] } ]
WITH __stage0 AS ( SELECT group_set, base."destination" as "destination__0", CASE WHEN group_set=0 THEN COUNT(1) END as "flight_count__0", CASE WHEN group_set=1 THEN DATE_TRUNC('month', base."dep_time") END as "departure_month__1", CASE WHEN group_set=1 THEN carriers_0."nickname" END as "nickname__1", CASE WHEN group_set=1 THEN COUNT(1) END as "flight_count__1" FROM '../data/flights.parquet' as base LEFT JOIN '../data/carriers.parquet' AS carriers_0 ON base."carrier"=carriers_0."code" CROSS JOIN (SELECT UNNEST(GENERATE_SERIES(0,1,1)) as group_set ) as group_set WHERE (base."dep_time">=TIMESTAMP '2001-01-01 00:00:00') and (base."dep_time"<TIMESTAMP '2002-01-01 00:00:00') GROUP BY 1,2,4,5 ) SELECT "destination__0" as "destination", MAX(CASE WHEN group_set=0 THEN "flight_count__0" END) as "flight_count", COALESCE(LIST({ "departure_month": "departure_month__1", "flight_count": "flight_count__1", "nickname": "nickname__1"} ORDER BY "departure_month__1" ASC NULLS LAST) FILTER (WHERE group_set=1),[]) as "by_month" FROM __stage0 GROUP BY 1 ORDER BY 2 desc NULLS LAST LIMIT 5