ExternalTableFromReader creates an external table columnTypes are the clickhouse column type for each column in the table, e.g.

NewExternalTableReader creates an external table from a file It parses the data according to the fileType The type of each column in the file must correspond to the columnTypes specified Column types are the clickhouse column type for each column in the table, e.g.

ParseDSN returns a new config used to connect to database.

Config is a configuration parsed from a DSN string.

MultiInsertStatement that stores multiple Insert Statements attached to multiple connection.