system.clusters | ClickHouse Documentation
clickhouse.com › operations › system-tablessystem.clusters. Contains information about clusters available in the config file and the servers in them. Columns: cluster ( String) — The cluster name. shard_num ( UInt32) — The shard number in the cluster, starting from 1. shard_weight ( UInt32) — The relative weight of the shard when writing data. replica_num ( UInt32) — The replica ...
cluster | ClickHouse Documentation
clickhouse.com › table-functions › clusterThe cluster and clusterAllReplicas table functions can be useful in the following cases: Accessing a specific cluster for data comparison, debugging, and testing. Queries to various ClickHouse clusters and replicas for research purposes. Infrequent distributed requests that are made manually. Connection settings like host, port, user, password ...
Overview | ClickHouse Documentation
https://clickhouse.com/docs18.05.2016 · ClickHouse® is a column-oriented database management system (DBMS) for online analytical processing . Overview English 中文 Русский 日本語 ... Introduction file merge numbers remote url mysql postgresql jdbc odbc hdfs s3 input generateRandom cluster view null function dictionary function hdfsCluster s3Cluster sqlite.