Can be set for an individual connection or for PUBLIC. You must have the SET ANY PUBLIC OPTION system privilege to set this
option for PUBLIC or for another user or role. Takes effect immediately.
The database option date_order is used to determine whether 10/11/12 is Oct 11 1912, Nov 12 1910, or Nov 10 1912.
Note
If you change the setting for date_order in a way that re-orders the date format, to change the date_format and timestamp_format
options to reflect the same change, and vice versa. See date_format option, and timestamp_format option.