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23 lines
600 B
SQL
23 lines
600 B
SQL
DROP TABLE IF EXISTS test_00615;
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CREATE TABLE test_00615
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(
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dt Date,
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id Int32,
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key String,
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data Nullable(Int8)
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) ENGINE = MergeTree(dt, (id, key, dt), 8192);
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INSERT INTO test_00615 (dt,id, key,data) VALUES ('2000-01-01', 100, 'key', 100500);
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alter table test_00615 drop column data;
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alter table test_00615 add column data Nullable(Float64);
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INSERT INTO test_00615 (dt,id, key,data) VALUES ('2000-01-01', 100, 'key', 100500);
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SELECT * FROM test_00615 ORDER BY data NULLS FIRST;
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OPTIMIZE TABLE test_00615;
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SELECT * FROM test_00615 ORDER BY data NULLS FIRST;
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DROP TABLE test_00615;
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