[SPARK-29389] Support synonyms for interval units

• Type: Sub-task
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 3.1.0
• Component/s: SQL
• Assignee: Unassigned
• Reporter: Max Gekk
• Created: 08/Oct/19 10:47
• Updated: 29/Mar/20 02:16

Description

Should be supported the following synonyms:

                 ["MILLENNIUM", ("MILLENNIA", "MIL", "MILS"),
                   "CENTURY", ("CENTURIES", "C", "CENT"),
                   "DECADE", ("DECADES", "DEC", "DECS"),
                   "YEAR", ("Y", "YEARS", "YR", "YRS"),
                   "QUARTER", ("QTR"),
                   "MONTH", ("MON", "MONS", "MONTHS"),
                   "DAY", ("D", "DAYS"),
                   "HOUR", ("H", "HOURS", "HR", "HRS"),
                   "MINUTE", ("M", "MIN", "MINS", "MINUTES"),
                   "SECOND", ("S", "SEC", "SECONDS", "SECS"),
                   "MILLISECONDS", ("MSEC", "MSECS", "MILLISECON", "MSECONDS", "MS"),
                   "MICROSECONDS", ("USEC", "USECS", "USECONDS", "MICROSECON", "US"),
                   "EPOCH"]

For example:

maxim=# select '100000000y 10mon -1000000000d -100000h -10min -10.000001s ago'::interval;
                            interval                            
----------------------------------------------------------------
 -100000000 years -10 mons [phone] days 100000:10:10.000001
(1 row)