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Added test [#CLICKHOUSE-2754]

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This commit is contained in:
Alexey Milovidov 2018-02-18 00:26:22 +03:00
parent fb0920ff98
commit 2cf73473f7
2 changed files with 21 additions and 0 deletions
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8
dbms/tests/queries/0_stateless/00571_alter_nullable.reference Normal file
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hello
world
hello \N
world \N
hello \N
world \N
hello 0
world 0

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dbms/tests/queries/0_stateless/00571_alter_nullable.sql Normal file
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DROP TABLE IF EXISTS test.nullable;
CREATE TABLE test.nullable (x String) ENGINE = MergeTree ORDER BY x;
INSERT INTO test.nullable VALUES ('hello'), ('world');
SELECT * FROM test.nullable;
ALTER TABLE test.nullable ADD COLUMN n Nullable(UInt64);
SELECT * FROM test.nullable;
ALTER TABLE test.nullable DROP COLUMN n;
ALTER TABLE test.nullable ADD COLUMN n Nullable(UInt64) DEFAULT NULL;
SELECT * FROM test.nullable;
ALTER TABLE test.nullable DROP COLUMN n;
ALTER TABLE test.nullable ADD COLUMN n Nullable(UInt64) DEFAULT 0;
SELECT * FROM test.nullable;
DROP TABLE test.nullable;