Method Compare

pkg/sql/sem/tree/datum.go:1301–1311

Compare implements the Datum interface.

(ctx *EvalContext, other Datum)

// Compare implements the Datum interface.
func (d *DCollatedString) Compare(ctx *EvalContext, other Datum) int {
	if other == DNull {
		// NULL is less than any non-NULL value.
		return 1
	}
	v, ok := UnwrapDatum(ctx, other).(*DCollatedString)
	if !ok || d.Locale != v.Locale {
		panic(makeUnsupportedComparisonMessage(d, other))
	}
	return bytes.Compare(d.Key, v.Key)
}

// Prev implements the Datum interface.
func (d *DCollatedString) Prev(_ *EvalContext) (Datum, bool) {