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53 lines
1.6 KiB
SQL
53 lines
1.6 KiB
SQL
DROP TABLE IF EXISTS codecs;
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CREATE TABLE codecs (id UInt32, val UInt32, s String)
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ENGINE = MergeTree ORDER BY id
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SETTINGS min_rows_for_wide_part = 10000;
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INSERT INTO codecs SELECT number, number, toString(number) FROM numbers(1000);
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SELECT sum(data_compressed_bytes), sum(data_uncompressed_bytes)
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FROM system.parts
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WHERE table = 'codecs' AND database = currentDatabase();
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SELECT sum(id), sum(val), max(s) FROM codecs;
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DETACH TABLE codecs;
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ATTACH table codecs;
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SELECT sum(id), sum(val), max(s) FROM codecs;
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DROP TABLE codecs;
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CREATE TABLE codecs (id UInt32 CODEC(NONE), val UInt32 CODEC(NONE), s String CODEC(NONE))
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ENGINE = MergeTree ORDER BY id
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SETTINGS min_rows_for_wide_part = 10000;
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INSERT INTO codecs SELECT number, number, toString(number) FROM numbers(1000);
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SELECT sum(data_compressed_bytes), sum(data_uncompressed_bytes)
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FROM system.parts
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WHERE table = 'codecs' AND database = currentDatabase();
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SELECT sum(id), sum(val), max(s) FROM codecs;
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DETACH TABLE codecs;
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ATTACH table codecs;
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SELECT sum(id), sum(val), max(s) FROM codecs;
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DROP TABLE codecs;
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CREATE TABLE codecs (id UInt32, val UInt32 CODEC(Delta, ZSTD), s String CODEC(ZSTD))
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ENGINE = MergeTree ORDER BY id
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SETTINGS min_rows_for_wide_part = 10000;
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INSERT INTO codecs SELECT number, number, toString(number) FROM numbers(1000);
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SELECT sum(data_compressed_bytes), sum(data_uncompressed_bytes)
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FROM system.parts
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WHERE table = 'codecs' AND database = currentDatabase();
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SELECT sum(id), sum(val), max(s) FROM codecs;
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DETACH TABLE codecs;
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ATTACH table codecs;
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SELECT sum(id), sum(val), max(s) FROM codecs;
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DROP TABLE codecs;
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