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20 lines
601 B
MySQL
20 lines
601 B
MySQL
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DROP TABLE IF EXISTS alter_bug;
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create table alter_bug (
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epoch UInt64 CODEC(Delta,LZ4),
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_time_dec Float64
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) Engine = MergeTree ORDER BY (epoch);
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SELECT name, type, compression_codec FROM system.columns WHERE table='alter_bug' AND database=currentDatabase();
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ALTER TABLE alter_bug MODIFY COLUMN epoch DEFAULT toUInt64(_time_dec) CODEC(Delta,LZ4);
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SELECT name, type, default_expression, compression_codec FROM system.columns WHERE table='alter_bug' AND database=currentDatabase();
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INSERT INTO alter_bug(_time_dec) VALUES(1577351080);
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SELECT * FROM alter_bug;
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DROP TABLE IF EXISTS alter_bug;
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