mirror of
https://github.com/ClickHouse/ClickHouse.git
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56 lines
1.6 KiB
SQL
56 lines
1.6 KiB
SQL
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DROP TABLE IF EXISTS indexed_table;
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CREATE TABLE indexed_table
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(
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`tm` DateTime,
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`log_message` String,
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INDEX log_message log_message TYPE tokenbf_v1(4096, 2, 0) GRANULARITY 1
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)
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ENGINE = MergeTree
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ORDER BY (tm)
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SETTINGS index_granularity_bytes = 50;
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INSERT INTO indexed_table SELECT toDateTime('2019-05-27 10:00:00') + number % 100, 'h' FROM numbers(1000);
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INSERT INTO indexed_table
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SELECT
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toDateTime('2019-05-27 10:00:00') + number % 100,
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concat('hhhhhhhhhhhhhhhhhhhhhhhhh', 'xxxxxxxxxxxxxxxxxxxxxxxxxxxx', 'yyyyyyyyyyyyyyyyyyyyyyyyyy', toString(rand()))
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FROM numbers(1000);
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OPTIMIZE TABLE indexed_table FINAL;
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SELECT COUNT() FROM indexed_table WHERE log_message like '%x%';
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DROP TABLE IF EXISTS indexed_table;
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DROP TABLE IF EXISTS another_indexed_table;
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CREATE TABLE another_indexed_table
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(
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`tm` DateTime,
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`log_message` String,
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INDEX log_message log_message TYPE tokenbf_v1(4096, 2, 0) GRANULARITY 1
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)
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ENGINE = MergeTree
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ORDER BY (tm)
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SETTINGS index_granularity_bytes = 50,
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vertical_merge_algorithm_min_rows_to_activate=0,
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vertical_merge_algorithm_min_columns_to_activate=0;
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INSERT INTO another_indexed_table SELECT toDateTime('2019-05-27 10:00:00') + number % 100, 'h' FROM numbers(1000);
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INSERT INTO another_indexed_table
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SELECT
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toDateTime('2019-05-27 10:00:00') + number % 100,
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concat('hhhhhhhhhhhhhhhhhhhhhhhhh', 'xxxxxxxxxxxxxxxxxxxxxxxxxxxx', 'yyyyyyyyyyyyyyyyyyyyyyyyyy', toString(rand()))
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FROM numbers(1000);
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OPTIMIZE TABLE another_indexed_table FINAL;
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SELECT COUNT() FROM another_indexed_table WHERE log_message like '%x%';
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DROP TABLE IF EXISTS another_indexed_table;
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