The code below allows you to make a nested/multiple select queries in Prisma.

const data = await prisma.user.findFirst({  
	where: {  
		username: params.username,  
	},  
	select: {  
		id: true,  
		name: true,  
		username: true,  
		image: true,  
		notes: {  
			select: { id: true, title: true },  
		},  
	},  
})