get connection, but also ensure it has at least one of the required tables
Usage
mhw_connect(duckdbfilepath, required_table_name = "ensembles")
Arguments
- duckdbfilepath
posix path to .duckdb file
- required_table_name
name of table that must be in db to check for
Value
duckdb DBI database connection object for use in DBI::dbGetQuery, etc or NA if not found