rank_by_year_and_name
Using a composite partition key and writing conditional statements (WHERE).
SOURCE '0_create_keyspace.cql';
DROP TABLE IF EXISTS cycling.rank_by_year_and_name;
// Store race information by year and race name using a COMPOSITE PARTITION KEY
// START-use_and_compositepk
USE cycling;
CREATE TABLE IF NOT EXISTS rank_by_year_and_name (
race_year int,
race_name text,
cyclist_name text,
rank int,
PRIMARY KEY ((race_year, race_name), rank)
);
// END-use_and_compositepk
DROP TABLE IF EXISTS cycling.rank_by_year_and_name;
// START-compositepk
CREATE TABLE IF NOT EXISTS cycling.rank_by_year_and_name (
race_year int,
race_name text,
cyclist_name text,
rank int,
PRIMARY KEY ((race_year, race_name), rank)
);
// END-compositepk
// START-dropindex
DROP INDEX IF EXISTS cycling.rank_idx;
// END-dropindex
// START-createindex
CREATE INDEX IF NOT EXISTS rank_idx
ON cycling.rank_by_year_and_name (rank);
// END-createindex
// START-drop_race_year_idx
DROP INDEX IF EXISTS cycling.race_year_idx;
// END-drop_race_year_idx
// START-create_race_year_idx
CREATE INDEX IF NOT EXISTS race_year_idx ON
cycling.rank_by_year_and_name (race_year);
// END-create_race_year_idx
INSERT INTO cycling.rank_by_year_and_name (race_year, race_name, cyclist_name, rank) VALUES (2015, 'Tour of Japan - Stage 4 - Minami > Shinshu', 'Benjamin PRADES', 1);
INSERT INTO cycling.rank_by_year_and_name (race_year, race_name, cyclist_name, rank) VALUES (2015, 'Tour of Japan - Stage 4 - Minami > Shinshu', 'Adam PHELAN', 2);
INSERT INTO cycling.rank_by_year_and_name (race_year, race_name, cyclist_name, rank) VALUES (2015, 'Tour of Japan - Stage 4 - Minami > Shinshu', 'Thomas LEBAS', 3);
INSERT INTO cycling.rank_by_year_and_name (race_year, race_name, cyclist_name, rank) VALUES (2014, 'Tour of Japan - Stage 4 - Minami > Shinshu', 'Benjamin PRADES', 3);
INSERT INTO cycling.rank_by_year_and_name (race_year, race_name, cyclist_name, rank) VALUES (2014, 'Tour of Japan - Stage 4 - Minami > Shinshu', 'Daniel MARTIN', 1);
INSERT INTO cycling.rank_by_year_and_name (race_year, race_name, cyclist_name, rank) VALUES (2014, 'Tour of Japan - Stage 4 - Minami > Shinshu', 'Johan Esteban CHAVES', 2);
INSERT INTO cycling.rank_by_year_and_name (race_year, race_name, cyclist_name, rank) VALUES (2015, 'Giro d''Italia - Stage 11 - Forli > Imola', 'Ilnur ZAKARIN', 1);
INSERT INTO cycling.rank_by_year_and_name (race_year, race_name, cyclist_name, rank) VALUES (2015, 'Giro d''Italia - Stage 11 - Forli > Imola', 'Carlos BETANCUR', 2);
INSERT INTO cycling.rank_by_year_and_name (race_year, race_name, cyclist_name, rank) VALUES (2014, '4th Tour of Beijing', 'Phillippe GILBERT', 1);
INSERT INTO cycling.rank_by_year_and_name (race_year, race_name, cyclist_name, rank) VALUES (2014, '4th Tour of Beijing', 'Daniel MARTIN', 2);
INSERT INTO cycling.rank_by_year_and_name (race_year, race_name, cyclist_name, rank) VALUES (2014, '4th Tour of Beijing', 'Johan Esteban CHAVES', 3);
INSERT INTO cycling.rank_by_year_and_name (race_year, race_name, cyclist_name, rank) VALUES (2014, '4th Tour of Beijing', 'Phillippe GILBERT', 1);
INSERT INTO cycling.rank_by_year_and_name (race_year, race_name, cyclist_name, rank) VALUES (2014, '4th Tour of Beijing', 'Daniel MARTIN', 2);
INSERT INTO cycling.rank_by_year_and_name (race_year, race_name, cyclist_name, rank) VALUES (2014, '4th Tour of Beijing', 'Johan Esteban CHAVES', 3);
// Show all inserted data
CAPTURE 'select_all_from_rank_by_year_and_name.results';
SELECT *
FROM cycling.rank_by_year_and_name;
CAPTURE OFF;
CAPTURE 'select_all_from_rank_by_year_and_name_Japan_2014.results';
// START-select_with_name_and_year
SELECT *
FROM cycling.rank_by_year_and_name
WHERE race_year = 2014
AND race_name = 'Tour of Japan - Stage 4 - Minami > Shinshu';
// END-select_with_name_and_year
CAPTURE OFF;
// START-sepstatementswithand
SELECT
rank,
cyclist_name AS name
FROM cycling.rank_by_year_and_name
WHERE "race_name" = 'Tour of Japan - Stage 4 - Minami > Shinshu'
AND race_year = 2014;
// END-sepstatementswithand
// START-columnalias
CAPTURE 'select_best_rank_from_rank_by_year_and_name.results';
SELECT
MIN(rank) AS best_rank,
cyclist_name
FROM cycling.rank_by_year_and_name
WHERE "race_name" = 'Tour of Japan - Stage 4 - Minami > Shinshu'
AND race_year = 2014;
// END-columnalias
CAPTURE OFF;
// The following query generates a warning, which is normal
// START-countrows
SELECT COUNT(*)
FROM cycling.rank_by_year_and_name;
// END-countrows
// START-limitrows
SELECT cyclist_name
FROM cycling.rank_by_year_and_name
LIMIT 50000;
// END-limitrows
// Query by partition
CAPTURE 'select_all_from_rank_by_year_and_name_partition_limit.results';
// START-partlimit
SELECT *
FROM cycling.rank_by_year_and_name
PER PARTITION LIMIT 2;
// END-partlimit
CAPTURE OFF;
// Select rank - filter on a clustering column
CAPTURE 'select_all_from_rank_by_year_and_name_rank_1.results';
// START-selectrank
SELECT *
FROM cycling.rank_by_year_and_name
WHERE rank = 1;
// END-selectrank
CAPTURE OFF;
CAPTURE 'select_all_from_rank_by_year_and_name_2014.results';
// START-select_with_year
SELECT *
FROM cycling.rank_by_year_and_name
WHERE race_year = 2014;
// END-select_with_year
CAPTURE OFF;