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64 lines
1.9 KiB
SQL
64 lines
1.9 KiB
SQL
DROP TABLE IF EXISTS table_rename_with_default;
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CREATE TABLE table_rename_with_default
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(
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date Date,
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key UInt64,
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value1 String,
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value2 String DEFAULT concat('Hello ', value1),
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value3 String ALIAS concat('Word ', value1)
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)
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ENGINE = MergeTree()
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PARTITION BY date
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ORDER BY key;
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INSERT INTO table_rename_with_default (date, key, value1) SELECT toDate('2019-10-01') + number % 3, number, toString(number) from numbers(9);
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SELECT * FROM table_rename_with_default WHERE key = 1 FORMAT TSVWithNames;
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SHOW CREATE TABLE table_rename_with_default;
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ALTER TABLE table_rename_with_default RENAME COLUMN value1 TO renamed_value1;
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SELECT * FROM table_rename_with_default WHERE key = 1 FORMAT TSVWithNames;
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SHOW CREATE TABLE table_rename_with_default;
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SELECT value2 FROM table_rename_with_default WHERE key = 1;
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SELECT value3 FROM table_rename_with_default WHERE key = 1;
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DROP TABLE IF EXISTS table_rename_with_default;
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DROP TABLE IF EXISTS table_rename_with_ttl;
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CREATE TABLE table_rename_with_ttl
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(
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date1 Date,
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date2 Date,
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value1 String,
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value2 String TTL date1 + INTERVAL 10000 MONTH
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)
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ENGINE = ReplicatedMergeTree('/clickhouse/test/table_rename_with_ttl', '1')
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ORDER BY tuple()
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TTL date2 + INTERVAL 10000 MONTH;
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INSERT INTO table_rename_with_ttl SELECT toDate('2019-10-01') + number % 3, toDate('2018-10-01') + number % 3, toString(number), toString(number) from numbers(9);
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SELECT * FROM table_rename_with_ttl WHERE value1 = '1' FORMAT TSVWithNames;
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SHOW CREATE TABLE table_rename_with_ttl;
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ALTER TABLE table_rename_with_ttl RENAME COLUMN date1 TO renamed_date1;
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SELECT * FROM table_rename_with_ttl WHERE value1 = '1' FORMAT TSVWithNames;
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SHOW CREATE TABLE table_rename_with_ttl;
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ALTER TABLE table_rename_with_ttl RENAME COLUMN date2 TO renamed_date2;
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SELECT * FROM table_rename_with_ttl WHERE value1 = '1' FORMAT TSVWithNames;
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SHOW CREATE TABLE table_rename_with_ttl;
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DROP TABLE IF EXISTS table_rename_with_ttl;
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