The format of the time column. The syntax of the format is timeSize:timeUnit:timeFormat
timeFormat can be either EPOCH or SIMPLE_DATE_FORMAT. If it is SIMPLE_DATE_FORMAT, the pattern string is also specified. For example:
1:MILLISECONDS:EPOCH - epoch millis
1:HOURS:EPOCH - epoch hours
1:DAYS:SIMPLE_DATE_FORMAT:yyyyMMdd - date specified like 20191018
1:HOURS:SIMPLE_DATE_FORMAT:EEE MMM dd HH:mm:ss ZZZ yyyy - date specified like Mon Aug 24 12:36:50 America/Los_Angeles 2019
Noted that if TIMESTAMP type is used in dataType, format is ignored because JDBC standard SQL requires TIMESTAMP in yyyy-[m]m-[d]d hh:mm:ss[.f...]
format.