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https://github.com/ClickHouse/ClickHouse.git
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40 lines
1.7 KiB
MySQL
40 lines
1.7 KiB
MySQL
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DROP TABLE IF EXISTS test.minmax_idx;
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CREATE TABLE test.minmax_idx
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(
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u64 UInt64,
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i32 Int32,
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f64 Float64,
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d Decimal(10, 2),
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s String,
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e Enum8('a' = 1, 'b' = 2, 'c' = 3),
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dt Date
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) ENGINE = MergeTree()
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ORDER BY u64
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INDEXES idx_all BY (i32, i32 + f64, d, s, e, dt) TYPE minmax GRANULARITY 2,
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idx_2 BY (u64 + toYear(dt), substring(s, 2, 4)) TYPE minmax GRANULARITY 3
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SETTINGS index_granularity = 2;
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/* many small inserts => table will make merges */
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INSERT INTO test.minmax_idx VALUES (1, 2, 4.5, 2.5, 'abc', 'a', '2014-01-01');
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INSERT INTO test.minmax_idx VALUES (0, 5, 4.7, 6.5, 'cba', 'b', '2014-01-04');
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INSERT INTO test.minmax_idx VALUES (1, 5, 6.9, 1.57, 'bac', 'c', '2017-01-01');
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INSERT INTO test.minmax_idx VALUES (1, 2, 4.5, 2.5, 'abc', 'a', '2016-01-01');
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INSERT INTO test.minmax_idx VALUES (2, 5, 4.7, 6.5, 'cba', 'b', '2015-01-01');
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INSERT INTO test.minmax_idx VALUES (1, 5, 6.9, 1.57, 'bac', 'c', '2014-11-11');
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INSERT INTO test.minmax_idx VALUES (1, 2, 4.5, 2.5, 'abc', 'a', '2014-02-11');
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INSERT INTO test.minmax_idx VALUES (0, 5, 4.7, 6.5, 'cba', 'b', '2014-03-11');
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INSERT INTO test.minmax_idx VALUES (1, 5, 6.9, 1.57, 'bac', 'c', '2014-04-11');
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INSERT INTO test.minmax_idx VALUES (1, 2, 4.5, 2.5, 'abc', 'a', '2014-05-11');
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INSERT INTO test.minmax_idx VALUES (2, 5, 4.7, 6.5, 'cba', 'b', '2014-06-11');
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INSERT INTO test.minmax_idx VALUES (1, 5, 6.9, 1.57, 'bac', 'c', '2014-07-11');
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/* simple select */
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SELECT * FROM test.minmax_idx WHERE i32 = 5 AND i32 + f64 < 12 AND 3 < d AND d < 7 AND (s = 'bac' OR s = 'cba') ORDER BY dt;
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/* select with hole made by primary key */
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SELECT * FROM test.minmax_idx WHERE u64 != 1 AND e = 'b' ORDER BY dt;
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DROP TABLE test.minmax_idx;
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