Method Precision

postgres/parser/types/types.go:1149–1157

Precision is the accuracy of the data type. DECIMAL : max # digits (must be >= Width/Scale) INTERVAL : max # fractional second digits TIME : max # fractional second digits TIMETZ : max # fractional second digits TIMESTAMP : max # fractional second digits TIMESTAMPTZ: max # fra

()

//
// Precision is always 0 for other types.
func (t *T) Precision() int32 {
	switch t.InternalType.Family {
	case IntervalFamily, TimestampFamily, TimestampTZFamily, TimeFamily, TimeTZFamily:
		if t.InternalType.Precision == 0 && !t.InternalType.TimePrecisionIsSet {
			return defaultTimePrecision
		}
	}
	return t.InternalType.Precision
}

// TypeModifier returns the type modifier of the type. This corresponds to the
// pg_attribute.atttypmod column. atttypmod records type-specific data supplied