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73 lines
2.4 KiB
SQL
73 lines
2.4 KiB
SQL
DROP TABLE IF EXISTS prop_table;
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CREATE TABLE prop_table
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(
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column_default UInt64 DEFAULT 42,
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column_materialized UInt64 MATERIALIZED column_default * 42,
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column_alias UInt64 ALIAS column_default + 1,
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column_codec String CODEC(ZSTD(10)),
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column_comment Date COMMENT 'Some comment',
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column_ttl UInt64 TTL column_comment + INTERVAL 1 MONTH
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)
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ENGINE MergeTree()
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ORDER BY tuple()
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TTL column_comment + INTERVAL 2 MONTH;
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SHOW CREATE TABLE prop_table;
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SYSTEM STOP TTL MERGES prop_table;
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INSERT INTO prop_table (column_codec, column_comment, column_ttl) VALUES ('str', toDate('2019-10-01'), 1);
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SELECT column_default, column_materialized, column_alias, column_codec, column_comment, column_ttl FROM prop_table;
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ALTER TABLE prop_table MODIFY COLUMN column_comment REMOVE COMMENT;
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SHOW CREATE TABLE prop_table;
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ALTER TABLE prop_table MODIFY COLUMN column_codec REMOVE CODEC;
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SHOW CREATE TABLE prop_table;
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ALTER TABLE prop_table MODIFY COLUMN column_alias REMOVE ALIAS;
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SELECT column_default, column_materialized, column_alias, column_codec, column_comment, column_ttl FROM prop_table;
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SHOW CREATE TABLE prop_table;
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INSERT INTO prop_table (column_alias, column_codec, column_comment, column_ttl) VALUES (33, 'trs', toDate('2020-01-01'), 2);
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SELECT column_default, column_materialized, column_alias, column_codec, column_comment, column_ttl FROM prop_table ORDER BY column_ttl;
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ALTER TABLE prop_table MODIFY COLUMN column_materialized REMOVE MATERIALIZED;
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SHOW CREATE TABLE prop_table;
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INSERT INTO prop_table (column_materialized, column_alias, column_codec, column_comment, column_ttl) VALUES (11, 44, 'rts', toDate('2020-02-01'), 3);
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SELECT column_default, column_materialized, column_alias, column_codec, column_comment, column_ttl FROM prop_table ORDER BY column_ttl;
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ALTER TABLE prop_table MODIFY COLUMN column_default REMOVE DEFAULT;
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SHOW CREATE TABLE prop_table;
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INSERT INTO prop_table (column_materialized, column_alias, column_codec, column_comment, column_ttl) VALUES (22, 55, 'tsr', toDate('2020-03-01'), 4);
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SELECT column_default, column_materialized, column_alias, column_codec, column_comment, column_ttl FROM prop_table ORDER BY column_ttl;
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ALTER TABLE prop_table REMOVE TTL;
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SHOW CREATE TABLE prop_table;
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ALTER TABLE prop_table MODIFY COLUMN column_ttl REMOVE TTL;
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SHOW CREATE TABLE prop_table;
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SYSTEM START TTL MERGES prop_table;
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OPTIMIZE TABLE prop_table FINAL;
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SELECT COUNT() FROM prop_table;
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DROP TABLE IF EXISTS prop_table;
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