This function is used to check if the provided column names are existed in the dataset.
Value
TRUEif the provided column names are existed in the dataset based on thestrictargument.Otherwise list of column names that are not existed in the dataset or a stop message if
stop_messageisTRUE.
See also
Other checks function:
check_duplicate_records(),
check_non_missing_value(),
check_object_type(),
check_value_match(),
detect_decimal_value(),
detect_numeric_value(),
is_datadict_tbl()
