private static boolean checkIsSideTable(String tableField) {
        String[] fieldInfos = StringUtils.split(tableField, ",");
        for (String field : fieldInfos) {
            Matcher matcher = SIDE_PATTERN.matcher(field.trim());
            if (matcher.find()) {
                return true;
            }
        }

        return false;
    }
judge dim table of PERIOD FOR SYSTEM_TIME

@param tableField
@return
core/src/main/java/com/dtstack/flink/sql/table/AbstractTableInfoParser.java