mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-10-21 07:50:49 +00:00
64 lines
2.6 KiB
SQL
64 lines
2.6 KiB
SQL
DROP TABLE IF EXISTS test.clear_column;
|
|
CREATE TABLE test.clear_column (d Date, num Int64, str String) ENGINE = MergeTree(d, d, 8192);
|
|
|
|
INSERT INTO test.clear_column VALUES ('2016-12-12', 1, 'a'), ('2016-11-12', 2, 'b');
|
|
|
|
SELECT num, str FROM test.clear_column ORDER BY num;
|
|
ALTER TABLE test.clear_column CLEAR COLUMN num IN PARTITION '201612';
|
|
SELECT num, str FROM test.clear_column ORDER BY num;
|
|
|
|
DROP TABLE test.clear_column;
|
|
|
|
-- Replicated case
|
|
|
|
DROP TABLE IF EXISTS test.clear_column1;
|
|
DROP TABLE IF EXISTS test.clear_column2;
|
|
CREATE TABLE test.clear_column1 (d Date, i Int64) ENGINE = ReplicatedMergeTree('/clickhouse/tables/test/clear_column', '1', d, d, 8192);
|
|
CREATE TABLE test.clear_column2 (d Date, i Int64) ENGINE = ReplicatedMergeTree('/clickhouse/tables/test/clear_column', '2', d, d, 8192);
|
|
|
|
INSERT INTO test.clear_column1 (d) VALUES ('2000-01-01'), ('2000-02-01');
|
|
|
|
SET replication_alter_partitions_sync=2;
|
|
ALTER TABLE test.clear_column1 ADD COLUMN s String;
|
|
ALTER TABLE test.clear_column1 CLEAR COLUMN s IN PARTITION '200001';
|
|
|
|
INSERT INTO test.clear_column1 VALUES ('2000-01-01', 1, 'a'), ('2000-02-01', 2, 'b');
|
|
INSERT INTO test.clear_column1 VALUES ('2000-01-01', 3, 'c'), ('2000-02-01', 4, 'd');
|
|
|
|
SELECT 'all';
|
|
SELECT * FROM test.clear_column1 ORDER BY d, i, s;
|
|
|
|
SELECT 'w/o i 1';
|
|
ALTER TABLE test.clear_column1 CLEAR COLUMN i IN PARTITION '200001';
|
|
SELECT * FROM test.clear_column2 ORDER BY d, i, s;
|
|
|
|
SELECT 'w/o is 1';
|
|
ALTER TABLE test.clear_column1 CLEAR COLUMN s IN PARTITION '200001';
|
|
SELECT * FROM test.clear_column2 ORDER BY d, i, s;
|
|
|
|
SELECT 'w/o is 12';
|
|
ALTER TABLE test.clear_column1 CLEAR COLUMN i IN PARTITION '200002';
|
|
ALTER TABLE test.clear_column1 CLEAR COLUMN s IN PARTITION '200002';
|
|
SELECT DISTINCT * FROM test.clear_column2 ORDER BY d, i, s;
|
|
SELECT DISTINCT * FROM test.clear_column2 ORDER BY d, i, s;
|
|
|
|
SELECT 'sizes';
|
|
SELECT sum(data_uncompressed_bytes) FROM system.columns WHERE database='test' AND table LIKE 'clear_column_' AND (name = 'i' OR name = 's') GROUP BY table;
|
|
|
|
-- double call should be OK
|
|
ALTER TABLE test.clear_column1 CLEAR COLUMN s IN PARTITION '200001';
|
|
ALTER TABLE test.clear_column1 CLEAR COLUMN s IN PARTITION '200002';
|
|
|
|
-- clear column in empty partition should be Ok
|
|
ALTER TABLE test.clear_column1 CLEAR COLUMN s IN PARTITION '200012', CLEAR COLUMN i IN PARTITION '200012';
|
|
-- Drop empty partition also Ok
|
|
ALTER TABLE test.clear_column1 DROP PARTITION '200012', DROP PARTITION '200011';
|
|
|
|
|
|
-- check optimize for non-leader replica (it is not related with CLEAR COLUMN)
|
|
OPTIMIZE TABLE test.clear_column1;
|
|
OPTIMIZE TABLE test.clear_column2;
|
|
|
|
DROP TABLE IF EXISTS test.clear_column1;
|
|
DROP TABLE IF EXISTS test.clear_column2;
|