mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-22 23:52:03 +00:00
33 lines
1.2 KiB
SQL
33 lines
1.2 KiB
SQL
SET input_format_defaults_for_omitted_fields=1;
|
|
|
|
DROP TABLE IF EXISTS defaults;
|
|
CREATE TABLE defaults
|
|
(
|
|
x UInt32,
|
|
y UInt32,
|
|
a DEFAULT x + y,
|
|
b Float32 DEFAULT round(log(1 + x + y), 5),
|
|
c UInt32 DEFAULT 42,
|
|
e MATERIALIZED x + y,
|
|
f ALIAS x + y
|
|
) ENGINE = MergeTree ORDER BY x;
|
|
|
|
INSERT INTO defaults FORMAT JSONEachRow {"x":1, "y":1};
|
|
INSERT INTO defaults (x, y) SELECT x, y FROM defaults LIMIT 1;
|
|
INSERT INTO defaults FORMAT JSONEachRow {"x":2, "y":2, "c":2};
|
|
INSERT INTO defaults FORMAT JSONEachRow {"x":3, "y":3, "a":3, "b":3, "c":3};
|
|
INSERT INTO defaults FORMAT JSONEachRow {"x":4} {"y":5, "c":5} {"a":6, "b":6, "c":6};
|
|
|
|
SELECT * FROM defaults ORDER BY (x, y);
|
|
|
|
ALTER TABLE defaults ADD COLUMN n Nested(a UInt64, b String);
|
|
INSERT INTO defaults FORMAT JSONEachRow {"x":7, "y":7, "n.a":[1,2], "n.b":["a","b"]};
|
|
SELECT * FROM defaults WHERE x = 7 FORMAT JSONEachRow;
|
|
|
|
ALTER TABLE defaults ADD COLUMN n.c Array(UInt8) DEFAULT arrayMap(x -> 0, n.a) AFTER n.a;
|
|
INSERT INTO defaults FORMAT JSONEachRow {"x":8, "y":8, "n.a":[3,4], "n.b":["c","d"]};
|
|
INSERT INTO defaults FORMAT JSONEachRow {"x":9, "y":9};
|
|
SELECT * FROM defaults WHERE x > 7 ORDER BY x FORMAT JSONEachRow;
|
|
|
|
DROP TABLE defaults;
|