deltaLakeCluster

​

Syntax

deltaLakeCluster(cluster_name, url [,aws_access_key_id, aws_secret_access_key] [,format] [,structure] [,compression] [,extra_credentials])
deltaLakeCluster(cluster_name, named_collection[, option=value [,..]])

deltaLakeS3Cluster(cluster_name, url [,aws_access_key_id, aws_secret_access_key] [,format] [,structure] [,compression] [,extra_credentials])
deltaLakeS3Cluster(cluster_name, named_collection[, option=value [,..]])

deltaLakeAzureCluster(cluster_name, connection_string|storage_account_url, container_name, blobpath, [,account_name], [,account_key] [,format] [,compression_method])
deltaLakeAzureCluster(cluster_name, named_collection[, option=value [,..]])

​

Arguments

• cluster_name — Name of a cluster that is used to build a set of addresses and connection parameters to remote and local servers.
• Description of all other arguments coincides with description of arguments in equivalent deltaLake table function.
• An optional extra_credentials parameter can be used to pass a role_arn for role-based access in ClickHouse Cloud. See Secure S3 for configuration steps.

​

Returned value

​

Virtual Columns

• _path — Path to the file. Type: LowCardinality(String).
• _file — Name of the file. Type: LowCardinality(String).
• _size — Size of the file in bytes. Type: Nullable(UInt64). If the file size is unknown, the value is NULL.
• _time — Last modified time of the file. Type: Nullable(DateTime). If the time is unknown, the value is NULL.
• _etag — The etag of the file. Type: LowCardinality(String). If the etag is unknown, the value is NULL.

​

Related

• deltaLake engine
• deltaLake table function