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73 lines
3.5 KiB
SQL
73 lines
3.5 KiB
SQL
-- Tags: no-replicated-database
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-- Tag no-replicated-database: Unsupported type of ALTER query
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DROP TABLE IF EXISTS t;
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# Memory, MergeTree, and ReplicatedMergeTree
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CREATE TABLE t (x UInt8) ENGINE = Memory COMMENT 'Hello';
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SELECT comment FROM system.tables WHERE database = currentDatabase() AND table = 't';
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ALTER TABLE t MODIFY COMMENT 'World';
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SELECT comment FROM system.tables WHERE database = currentDatabase() AND table = 't';
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DROP TABLE t;
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CREATE TABLE t (x UInt8) ENGINE = MergeTree ORDER BY () COMMENT 'Hello';
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SELECT comment FROM system.tables WHERE database = currentDatabase() AND table = 't';
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ALTER TABLE t MODIFY COMMENT 'World';
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SELECT comment FROM system.tables WHERE database = currentDatabase() AND table = 't';
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DROP TABLE t;
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# The case when there are many operations in one ALTER
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CREATE TABLE t (x UInt8) ENGINE = MergeTree ORDER BY () COMMENT 'Hello';
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SELECT comment FROM system.tables WHERE database = currentDatabase() AND table = 't';
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ALTER TABLE t MODIFY COMMENT 'World', MODIFY COLUMN x UInt16;
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SELECT comment FROM system.tables WHERE database = currentDatabase() AND table = 't';
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DROP TABLE t;
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# Note that the table comment is not replicated. We can implement it later.
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CREATE TABLE t (x UInt8) ENGINE = ReplicatedMergeTree('/clickhouse/tables/{database}/test_comment_table1/t', '1') ORDER BY () COMMENT 'Hello';
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SELECT comment FROM system.tables WHERE database = currentDatabase() AND table = 't';
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ALTER TABLE t MODIFY COMMENT 'World';
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SELECT comment FROM system.tables WHERE database = currentDatabase() AND table = 't';
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DROP TABLE t SYNC;
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CREATE TABLE t (x UInt8) ENGINE = ReplicatedMergeTree('/clickhouse/tables/{database}/test_comment_table2/t', '1') ORDER BY () COMMENT 'Hello';
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SELECT comment FROM system.tables WHERE database = currentDatabase() AND table = 't';
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ALTER TABLE t MODIFY COMMENT 'World', MODIFY COLUMN x UInt16;
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SELECT comment FROM system.tables WHERE database = currentDatabase() AND table = 't';
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DROP TABLE t SYNC;
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# The cases when there is no comment on creation
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CREATE TABLE t (x UInt8) ENGINE = Memory;
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SELECT comment FROM system.tables WHERE database = currentDatabase() AND table = 't';
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ALTER TABLE t MODIFY COMMENT 'World';
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SELECT comment FROM system.tables WHERE database = currentDatabase() AND table = 't';
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DROP TABLE t;
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CREATE TABLE t (x UInt8) ENGINE = MergeTree ORDER BY ();
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SELECT comment FROM system.tables WHERE database = currentDatabase() AND table = 't';
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ALTER TABLE t MODIFY COMMENT 'World';
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SELECT comment FROM system.tables WHERE database = currentDatabase() AND table = 't';
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DROP TABLE t;
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CREATE TABLE t (x UInt8) ENGINE = MergeTree ORDER BY ();
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SELECT comment FROM system.tables WHERE database = currentDatabase() AND table = 't';
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ALTER TABLE t MODIFY COMMENT 'World', MODIFY COLUMN x UInt16;
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SELECT comment FROM system.tables WHERE database = currentDatabase() AND table = 't';
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DROP TABLE t;
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CREATE TABLE t (x UInt8) ENGINE = ReplicatedMergeTree('/clickhouse/tables/{database}/test_comment_table3/t', '1') ORDER BY ();
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SELECT comment FROM system.tables WHERE database = currentDatabase() AND table = 't';
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ALTER TABLE t MODIFY COMMENT 'World';
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SELECT comment FROM system.tables WHERE database = currentDatabase() AND table = 't';
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DROP TABLE t SYNC;
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CREATE TABLE t (x UInt8) ENGINE = ReplicatedMergeTree('/clickhouse/tables/{database}/test_comment_table4/t', '1') ORDER BY ();
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SELECT comment FROM system.tables WHERE database = currentDatabase() AND table = 't';
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ALTER TABLE t MODIFY COMMENT 'World', MODIFY COLUMN x UInt16;
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SELECT comment FROM system.tables WHERE database = currentDatabase() AND table = 't';
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DROP TABLE t SYNC;
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