
PostgreSQL: Documentation: 11: 8.5. Date/Time Types
2022-2-10Precision can be specified for time, timestamp, and interval types, and can range from 0 to 6. If no precision is specified in a constant specification, it defaults to the precision of the literal value (but not more than 6 digits). 8.5.1.1. Dates. Table 8.10 shows some possible inputs for the date type. Table 8.10.