Method evalArgs

pkg/sql/sem/tree/eval.go:4066–4079

EvalArgsAndGetGenerator evaluates the arguments and instanciates a ValueGenerator for use by set projections. func (expr *FuncExpr) EvalArgsAndGetGenerator(ctx *EvalContext) (ValueGenerator, error) { if expr.fn == nil || expr.fnProps.Class != GeneratorClass { return nil, errors.AssertionFailedf("

(ctx *EvalContext)

// evalArgs evaluates just the function application's arguments.
// The returned bool indicates that the NULL should be propagated.
func (expr *FuncExpr) evalArgs(ctx *EvalContext) (bool, Datums, error) {
	args := make(Datums, len(expr.Exprs))
	for i, e := range expr.Exprs {
		arg, err := e.(TypedExpr).Eval(ctx)
		if err != nil {
			return false, nil, err
		}
		if arg == DNull && !expr.fnProps.NullableArgs {
			return true, nil, nil
		}
		args[i] = arg
	}
	return false, args, nil
}

// Eval implements the TypedExpr interface.
func (expr *FuncExpr) Eval(ctx *EvalContext) (Datum, error) {