mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-18 05:32:52 +00:00
28 lines
625 B
MySQL
28 lines
625 B
MySQL
|
USE test;
|
||
|
|
DROP TABLE IF EXISTS test;
|
||
|
|
DROP TABLE IF EXISTS replacing;
|
||
|
|
|
||
|
|
CREATE TABLE test
|
||
|
|
(
|
||
|
|
date Date,
|
||
|
|
x Int32,
|
||
|
|
ver UInt64
|
||
|
|
)
|
||
|
|
ENGINE = MergeTree(date, x, 4096);
|
||
|
|
|
||
|
|
INSERT INTO test VALUES ('2018-03-21', 1, 1), ('2018-03-21', 1, 2);
|
||
|
|
CREATE TABLE replacing ENGINE = ReplacingMergeTree(date, x, 4096, ver) AS SELECT * FROM test;
|
||
|
|
|
||
|
|
SELECT * FROM test ORDER BY ver;
|
||
|
|
|
||
|
|
SELECT * FROM replacing ORDER BY ver;
|
||
|
|
SELECT * FROM replacing FINAL ORDER BY ver;
|
||
|
|
|
||
|
|
OPTIMIZE TABLE replacing PARTITION '201803' FINAL;
|
||
|
|
|
||
|
|
SELECT * FROM replacing ORDER BY ver;
|
||
|
|
SELECT * FROM replacing FINAL ORDER BY ver;
|
||
|
|
|
||
|
|
DROP TABLE test;
|
||
|
|
DROP TABLE replacing;
|