presto-main/src/main/java/io/prestosql/sql/relational/SqlToRowExpressionTranslator.java/SqlToRowExpressionTranslator/visitArithmeticBinary
class SqlToRowExpressionTranslator:        @Override
        protected RowExpression visitArithmeticBinary(ArithmeticBinaryExpression node, Void context)
        {
            RowExpression left = process(node.getLeft(), context);
            RowExpression right = process(node.getRight(), context);

            return call(
                    standardFunctionResolution.arithmeticFunction(node.getOperator(), left.getType(), right.getType()),
                    getType(node),
                    left,
                    right);
        }