import_stmt ::=
	'IMPORT' import_format string_or_placeholder opt_with_options
	| 'IMPORT' 'TABLE' table_name 'FROM' import_format string_or_placeholder opt_with_options
	| 'IMPORT' 'TABLE' table_name 'CREATE' 'USING' string_or_placeholder import_format 'DATA' '(' string_or_placeholder_list ')' opt_with_options
	| 'IMPORT' 'TABLE' table_name '(' table_elem_list ')' import_format 'DATA' '(' string_or_placeholder_list ')' opt_with_options
