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11 lines
787 B
SQL
11 lines
787 B
SQL
SET send_logs_level = 'none';
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DROP TABLE IF EXISTS delta_codec_for_alter;
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CREATE TABLE delta_codec_for_alter (date Date, x UInt32 Codec(Delta), s FixedString(128)) ENGINE = MergeTree ORDER BY tuple();
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SELECT compression_codec FROM system.columns WHERE database = currentDatabase() AND table = 'delta_codec_for_alter' AND name = 'x';
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ALTER TABLE delta_codec_for_alter MODIFY COLUMN x Codec(Delta, LZ4);
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SELECT compression_codec FROM system.columns WHERE database = currentDatabase() AND table = 'delta_codec_for_alter' AND name = 'x';
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ALTER TABLE delta_codec_for_alter MODIFY COLUMN x UInt64 Codec(Delta, LZ4);
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SELECT compression_codec FROM system.columns WHERE database = currentDatabase() AND table = 'delta_codec_for_alter' AND name = 'x';
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DROP TABLE IF EXISTS delta_codec_for_alter;
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