Method Compare

pkg/sql/sem/tree/datum.go:1111–1127

Compare implements the Datum interface.

(ctx *EvalContext, other Datum)

// Compare implements the Datum interface.
func (d *DString) Compare(ctx *EvalContext, other Datum) int {
	if other == DNull {
		// NULL is less than any non-NULL value.
		return 1
	}
	v, ok := UnwrapDatum(ctx, other).(*DString)
	if !ok {
		panic(makeUnsupportedComparisonMessage(d, other))
	}
	if *d < *v {
		return -1
	}
	if *d > *v {
		return 1
	}
	return 0
}

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