Method IsDistinctFrom

pkg/sql/sem/tree/datum.go:185–201

IsDistinctFrom checks to see if two datums are distinct from each other. Any change in value is considered distinct, however, a NULL value is NOT considered disctinct from another NULL value.

(evalCtx *EvalContext, other Datums)

// change in value is considered distinct, however, a NULL value is NOT
// considered disctinct from another NULL value.
func (d Datums) IsDistinctFrom(evalCtx *EvalContext, other Datums) bool {
	if len(d) != len(other) {
		return true
	}
	for i, val := range d {
		if val == DNull {
			if other[i] != DNull {
				return true
			}
		} else {
			if val.Compare(evalCtx, other[i]) != 0 {
				return true
			}
		}
	}
	return false
}

// CompositeDatum is a Datum that may require composite encoding in
// indexes. Any Datum implementing this interface must also add itself to