聊聊clickhouse分布式表的操作

CREATE TABLE [IF NOT EXISTS] [db.]table_name [ON CLUSTER cluster]
(
    name1 [type1] [DEFAULT|MATERIALIZED|ALIAS expr1],
    name2 [type2] [DEFAULT|MATERIALIZED|ALIAS expr2],
    ...
) ENGINE = Distributed(cluster, database, table[, sharding_key[, policy_name]])
[SETTINGS name=value, ...]

CREATE TABLE distribute_test_all on cluster c1
(
 name String,
 age Int16,
 weight Float32
)
ENGINE = Distributed(c1, db1, distribute_test_local, rand());

CREATE TABLE [IF NOT EXISTS] [db.]table_name [ON CLUSTER cluster]
(
    name1 [type1] [NULL|NOT NULL] [DEFAULT|MATERIALIZED|EPHEMERAL|ALIAS expr1] [compression_codec] [TTL expr1] [COMMENT 'comment for column'],
    name2 [type2] [NULL|NOT NULL] [DEFAULT|MATERIALIZED|EPHEMERAL|ALIAS expr2] [compression_codec] [TTL expr2] [COMMENT 'comment for column'],
    ...
) ENGINE = engine
  COMMENT 'comment for table'

CREATE TABLE distribute_test_local on cluster c1
(
 name String,
 age Int16,
 weight Float32
)
Engine=MergeTree()
ORDER BY name;

--删除分布式表
DROP TABLE distribute_test_all ON CLUSTER c1

-删除本地表
DROP TABLE distribute_test_local ON CLUSTER c1