Function unpreferred

pkg/sql/sem/tree/eval.go:1597–1600

(cmp *CmpOp)

	return makeCmpOpOverload(treecmp.IsNotDistinctFrom, a, b, true, v)
}
func unpreferred(cmp *CmpOp) *CmpOp {
	cmp.OverloadPreference = OverloadPreferenceUnpreferred
	return cmp
}

// CmpOps contains the comparison operations indexed by operation type.
var CmpOps = cmpOpFixups(map[treecmp.ComparisonOperatorSymbol]*CmpOpOverloads{