Connect to a Greenplum database.
Manually disconnecting a connection is not necessary with RGreenplum, but still recommended; if you delete the object containing the connection, it will be automatically disconnected during the next GC with a warning. methods
## S4 method for signature 'GreenplumDriver' dbConnect(drv, dbname = NULL, host = NULL, port = NULL, password = NULL, user = NULL, service = NULL, ..., bigint = c("integer64", "integer", "numeric", "character"))
drv: RGreenplum::Greenplum()dbname: Database name. If NULL, defaults to the user name. Note that this argument can only contain the database name, it will not be parsed as a connection string (internally, expand_dbname is set to false in the call to PQconnectdbParams()).host, port: Host and port. If NULL, will be retrieved from PGHOST and PGPORT env vars.user, password: User name and password. If NULL, will be retrieved from PGUSER and PGPASSWORD envvars, or from the appropriate line in ~/.pgpass. See http://www.postgresql.org/docs/9.6/static/libpq-pgpass.html for more details.service: Name of service to connect as. If NULL, will be ignored. Otherwise, connection parameters will be loaded from the pg_service.conf file and used. See http://www.postgresql.org/docs/9.6/static/libpq-pgservice.html for details on this file and syntax....: Other name-value pairs that describe additional connection options as described at http://www.postgresql.org/docs/9.6/static/libpq-connect.html#LIBPQ-PARAMKEYWORDSbigint: The R type that 64-bit integer types should be mapped to, default is [bit64::integer64], which allows the full range of 64 bit integers.