spec_sql_exists_table
Value
dbExistsTable() returns a logical scalar, TRUE if the table or view
specified by the name argument exists, FALSE otherwise.
This includes temporary tables if supported by the database.
Failure modes
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 DBI::dbQuoteIdentifier() or
if this results in a non-scalar.
Specification
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:
dbExistsTable()will do the quoting, perhaps by callingdbQuoteIdentifier(conn, x = name)If the result of a call to
DBI::dbQuoteIdentifier(): no more quoting is done
For all tables listed by DBI::dbListTables(), dbExistsTable() returns TRUE.
See also
Other sql specifications:
spec_sql_append_table,
spec_sql_create_table,
spec_sql_list_fields,
spec_sql_list_objects,
spec_sql_list_tables,
spec_sql_quote_identifier,
spec_sql_quote_literal,
spec_sql_quote_string,
spec_sql_read_table,
spec_sql_remove_table,
spec_sql_unquote_identifier,
spec_sql_write_table