2019-04-18 18:48:04 +00:00
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DROP TABLE IF EXISTS nullable_00571;
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CREATE TABLE nullable_00571 (x String) ENGINE = MergeTree ORDER BY x;
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INSERT INTO nullable_00571 VALUES ('hello'), ('world');
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SELECT * FROM nullable_00571;
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ALTER TABLE nullable_00571 ADD COLUMN n Nullable(UInt64);
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SELECT * FROM nullable_00571;
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ALTER TABLE nullable_00571 DROP COLUMN n;
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ALTER TABLE nullable_00571 ADD COLUMN n Nullable(UInt64) DEFAULT NULL;
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SELECT * FROM nullable_00571;
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ALTER TABLE nullable_00571 DROP COLUMN n;
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ALTER TABLE nullable_00571 ADD COLUMN n Nullable(UInt64) DEFAULT 0;
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SELECT * FROM nullable_00571;
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DROP TABLE nullable_00571;
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