spec_sql_remove_table
dbRemoveTable() returns TRUE, invisibly.
If the table does not exist, an error is raised.
An attempt to remove a view with this function may result in an error.
An error is raised when calling this method for a closed
or invalid connection.
An error is also raised
if name cannot be processed with dbQuoteIdentifier()
or if this results in a non-scalar.
A table removed by dbRemoveTable() doesn't appear in the list of tables
returned by dbListTables(),
and dbExistsTable() returns FALSE.
The removal propagates immediately to other connections to the same database.
This function can also be used to remove a temporary table.
The name argument is processed as follows,
to support databases that allow non-syntactic names for their objects:
If an unquoted table name as string: dbRemoveTable() will do the
quoting,
perhaps by calling dbQuoteIdentifier(conn, x = name)
If the result of a call to dbQuoteIdentifier(): no more quoting is done