16, 4z, 8z or 16z. The number indicates the gray level and the optional z is used to enable compression in sprite definition. 23.4 Importing Sprite You can also launch the GUI to generate a sprite character from a give Unicode value %chr(65) A %darken Return a darken color of a given color with some ratio %darken("red", 20) #CC0000 %date Retrieve current date. You can provide an optional format for the light one %is_light("#000000") false %lighten Return a lighten color of a given color with some ratio %lighten("red", 20) #CC3333 %load_json Load JSON data from local file or external URL %load_json

v_fast AS ratio FROM ( SELECT PE.Names, query_duration_ms > 3000 AS slow, avg(PE.Values) AS value, FROM system.query_thread_log WHERE query = '...' GROUP BY PE.Names, slow ) HAVING ratio > 1.1 ORDER ORDER BY ratio DESC 51 / 77 Тестирование ClickHouse, которого мы заслуживаем Тесты производительности: анализ запросов PE.Names v_slow v_fast ratio SoftPageFaults 10226.823 6060.816 1.6873 SystemTimeMicroseconds

ISMULTIPLE ( A BIGPOSNUM, B BIGPOSNUM) RETURNS (RES BOOL3) AS -- Отношение является BIGINT DECLARE RATIO TYPE OF BIGPOSNUM; – Такой же остаток DECLARE REMAINDER TYPE OF BIGPOSNUM; BEGIN IF (:A IS NULL BEGIN IF (:A = 0) THEN RES = 1; ELSE RES = 0; END ELSE BEGIN RATIO = :A / :B; -- Целочисленное деление! REMAINDER = :A - :B*:RATIO; IF (:REMAINDER = 0) THEN RES = 1; ELSE RES = 0; END END^ SET

настройки ● ClickHouse settings (profile, server settings) configuration: settings: compression/case/method: zstd ● Zoned deployment, Affinity rules ● AntiAffinity rules ● Service templates

16, 4z, 8z or 16z. The number indicates the gray level and the optional z is used to enable compression in sprite definition. 15.2 Importing Sprite You can also launch the GUI to generate a sprite

16, 4z, 8z or 16z. The number indicates the gray level and the optional z is used to enable compression in sprite definition. 15.2 Importing Sprite You can also launch the GUI to generate a sprite

16, 4z, 8z or 16z. The number indicates the gray level and the optional z is used to enable compression in sprite definition. 15.2 Importing Sprite You can also launch the GUI to generate a sprite

16, 4z, 8z or 16z. The number indicates the gray level and the optional z is used to enable compression in sprite definition. 17.2 Importing Sprite You can also launch the GUI to generate a sprite

16, 4z, 8z or 16z. The number indicates the gray level and the optional z is used to enable compression in sprite definition. 17.2 Importing Sprite You can also launch the GUI to generate a sprite

16, 4z, 8z or 16z. The number indicates the gray level and the optional z is used to enable compression in sprite definition. 17.2 Importing Sprite You can also launch the GUI to generate a sprite