mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-23 08:02:02 +00:00
85 lines
2.5 KiB
SQL
85 lines
2.5 KiB
SQL
DROP TABLE IF EXISTS src;
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DROP TABLE IF EXISTS dst;
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CREATE TABLE src (p UInt64, k String, d UInt64) ENGINE = MergeTree PARTITION BY p ORDER BY k;
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CREATE TABLE dst (p UInt64, k String, d UInt64) ENGINE = MergeTree PARTITION BY p ORDER BY k;
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SELECT 'Initial';
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INSERT INTO src VALUES (0, '0', 1);
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INSERT INTO src VALUES (1, '0', 1);
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INSERT INTO src VALUES (1, '1', 1);
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INSERT INTO src VALUES (2, '0', 1);
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INSERT INTO dst VALUES (0, '1', 2);
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INSERT INTO dst VALUES (1, '1', 2), (1, '2', 2);
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INSERT INTO dst VALUES (2, '1', 2);
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SELECT count(), sum(d) FROM src;
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SELECT count(), sum(d) FROM dst;
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SELECT 'REPLACE simple';
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ALTER TABLE dst REPLACE PARTITION 1 FROM src;
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ALTER TABLE src DROP PARTITION 1;
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SELECT count(), sum(d) FROM src;
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SELECT count(), sum(d) FROM dst;
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SELECT 'REPLACE empty';
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ALTER TABLE src DROP PARTITION 1;
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ALTER TABLE dst REPLACE PARTITION 1 FROM src;
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SELECT count(), sum(d) FROM dst;
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SELECT 'REPLACE recursive';
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ALTER TABLE dst DROP PARTITION 1;
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INSERT INTO dst VALUES (1, '1', 2), (1, '2', 2);
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CREATE TEMPORARY table test_block_numbers (m UInt64);
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INSERT INTO test_block_numbers SELECT max(max_block_number) AS m FROM system.parts WHERE database=currentDatabase() AND table='dst' AND active AND name LIKE '1_%';
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ALTER TABLE dst REPLACE PARTITION 1 FROM dst;
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SELECT count(), sum(d) FROM dst;
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INSERT INTO test_block_numbers SELECT max(max_block_number) AS m FROM system.parts WHERE database=currentDatabase() AND table='dst' AND active AND name LIKE '1_%';
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SELECT (max(m) - min(m) > 1) AS new_block_is_generated FROM test_block_numbers;
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DROP TEMPORARY TABLE test_block_numbers;
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SELECT 'ATTACH FROM';
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ALTER TABLE dst DROP PARTITION 1;
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DROP TABLE src;
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CREATE TABLE src (p UInt64, k String, d UInt64) ENGINE = MergeTree PARTITION BY p ORDER BY k;
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INSERT INTO src VALUES (1, '0', 1);
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INSERT INTO src VALUES (1, '1', 1);
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SYSTEM STOP MERGES dst;
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INSERT INTO dst VALUES (1, '1', 2);
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ALTER TABLE dst ATTACH PARTITION 1 FROM src;
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SELECT count(), sum(d) FROM dst;
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SELECT 'OPTIMIZE';
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SELECT count(), sum(d), uniqExact(_part) FROM dst;
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SYSTEM START MERGES;
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SET optimize_throw_if_noop=1;
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OPTIMIZE TABLE dst;
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SELECT count(), sum(d), uniqExact(_part) FROM dst;
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SELECT 'After restart';
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DETACH TABLE dst;
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ATTACH TABLE dst;
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SELECT count(), sum(d) FROM dst;
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SELECT 'DETACH+ATTACH PARTITION';
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ALTER TABLE dst DETACH PARTITION 0;
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ALTER TABLE dst DETACH PARTITION 1;
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ALTER TABLE dst DETACH PARTITION 2;
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ALTER TABLE dst ATTACH PARTITION 1;
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SELECT count(), sum(d) FROM dst;
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DROP TABLE IF EXISTS src;
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DROP TABLE IF EXISTS dst;
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