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55 lines
1.5 KiB
SQL
55 lines
1.5 KiB
SQL
DROP TABLE IF EXISTS mutation_table;
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CREATE TABLE mutation_table (
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id int,
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price Nullable(Int32)
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)
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ENGINE = MergeTree()
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PARTITION BY id
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ORDER BY id;
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INSERT INTO mutation_table (id, price) VALUES (1, 100);
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ALTER TABLE mutation_table UPDATE price = 150 WHERE id = 1 SETTINGS mutations_sync = 2;
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SELECT * FROM mutation_table;
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DROP TABLE IF EXISTS mutation_table;
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create table mutation_table ( dt Nullable(Date), name Nullable(String))
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engine MergeTree order by tuple();
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insert into mutation_table (name, dt) values ('car', '2020-02-28');
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insert into mutation_table (name, dt) values ('dog', '2020-03-28');
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select * from mutation_table order by dt, name;
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alter table mutation_table update dt = toDateOrNull('2020-08-02')
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where name = 'car' SETTINGS mutations_sync = 2;
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select * from mutation_table order by dt, name;
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insert into mutation_table (name, dt) values ('car', Null);
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insert into mutation_table (name, dt) values ('cat', Null);
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alter table mutation_table update dt = toDateOrNull('2020-08-03')
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where name = 'car' and dt is null SETTINGS mutations_sync = 2;
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select * from mutation_table order by dt, name;
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alter table mutation_table update dt = toDateOrNull('2020-08-04')
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where name = 'car' or dt is null SETTINGS mutations_sync = 2;
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select * from mutation_table order by dt, name;
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insert into mutation_table (name, dt) values (Null, '2020-08-05');
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alter table mutation_table update dt = Null
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where name is not null SETTINGS mutations_sync = 2;
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select * from mutation_table order by dt, name;
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DROP TABLE IF EXISTS mutation_table;
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