ClickHouse/tests/queries/0_stateless/02477_fuse_quantiles.sql

SET allow_experimental_analyzer = 1;
SET optimize_syntax_fuse_functions = 1, optimize_fuse_sum_count_avg = 1;

DROP TABLE IF EXISTS fuse_tbl;

CREATE TABLE fuse_tbl(a Nullable(Int32), b Int32) Engine = Log;

INSERT INTO fuse_tbl SELECT number, number + 1 FROM numbers(1000);

SELECT quantile(0.8)(a), toTypeName(quantile(0.8)(a)), quantile(0.9)(a), toTypeName(quantile(0.9)(a)) FROM fuse_tbl;
SELECT quantile(0.8)(b), toTypeName(quantile(0.8)(b)), quantile(0.9)(b), toTypeName(quantile(0.9)(b)) FROM fuse_tbl;
SELECT quantile(0.8)(b), toTypeName(quantile(0.8)(b)), quantile(0.1)(b), toTypeName(quantile(0.1)(b)) FROM fuse_tbl;

SELECT quantile(a - 1), quantile(b - 1) + 1, quantile(0.8)(b - 1) + 1, quantile(0.8)(b - 1) + 2, quantile(0.9)(b - 1) + 1 FROM fuse_tbl;

SELECT quantile(0.5)(b), quantile(0.9)(b) from (SELECT x + 1 as b FROM (SELECT quantile(0.5)(b) as x, quantile(0.9)(b) FROM fuse_tbl) GROUP BY x);
EXPLAIN QUERY TREE run_passes = 1 SELECT quantile(0.5)(b), quantile(0.9)(b) from (SELECT x + 1 as b FROM (SELECT quantile(0.5)(b) as x, quantile(0.9)(b) FROM fuse_tbl) GROUP BY x);

DROP TABLE fuse_tbl;