Support Connector name in SQL identifiers

**Is your feature request related to a problem? Please describe.**
In case of connectors are ingesting data from different tables with the same name, a naming convention in SQL is necessary to identify the table or the field to use.

**Describe the solution you'd like**
Allow to specify a table identifier like `connection_name.table_name` and a field identifier like `connection_name.table_name.field_name`