mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-05 23:31:24 +00:00
21 lines
1004 B
SQL
21 lines
1004 B
SQL
DROP TABLE IF EXISTS A;
|
|
DROP TABLE IF EXISTS B;
|
|
|
|
CREATE TABLE A(k UInt32, t DateTime, a Float64) ENGINE = MergeTree() ORDER BY (k, t);
|
|
INSERT INTO A(k,t,a) VALUES (1,1,1),(1,2,2),(1,3,3),(1,4,4),(1,5,5); -- multiple joined values
|
|
INSERT INTO A(k,t,a) VALUES (2,1,1),(2,2,2),(2,3,3),(2,4,4),(2,5,5); -- one joined value
|
|
INSERT INTO A(k,t,a) VALUES (3,1,1),(3,2,2),(3,3,3),(3,4,4),(3,5,5); -- no joined values
|
|
|
|
CREATE TABLE B(k UInt32, t DateTime, b Float64) ENGINE = MergeTree() ORDER BY (k, t);
|
|
INSERT INTO B(k,t,b) VALUES (1,2,2),(1,4,4);
|
|
INSERT INTO B(k,t,b) VALUES (2,3,3);
|
|
|
|
SELECT A.k, toString(A.t, 'UTC'), A.a, B.b, toString(B.t, 'UTC'), B.k FROM A ASOF LEFT JOIN B USING(k,t) ORDER BY (A.k, A.t);
|
|
|
|
SELECT A.k, toString(A.t, 'UTC'), A.a, B.b, toString(B.t, 'UTC'), B.k FROM A ASOF INNER JOIN B ON A.k == B.k AND A.t >= B.t ORDER BY (A.k, A.t);
|
|
|
|
SELECT A.k, toString(A.t, 'UTC'), A.a, B.b, toString(B.t, 'UTC'), B.k FROM A ASOF JOIN B USING(k,t) ORDER BY (A.k, A.t);
|
|
|
|
DROP TABLE A;
|
|
DROP TABLE B;
|