From 05ebf87269fa7c0bb890ee6f3f5ba76d6d45480c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?L=C3=AA=20T=E1=BA=A5n=20Kh=C3=B4i?=
 <43715386+HelpMe-Pls@users.noreply.github.com>
Date: Tue, 30 Jan 2024 01:15:10 +0700
Subject: [PATCH] =?UTF-8?q?fix:=20=E2=9C=8F=EF=B8=8F=20Fixed=20PR=20#45=20?=
 =?UTF-8?q?(#47)?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../02.solution.select/app/routes/users+/$username.tsx          | 2 +-
 .../03.problem.nested-select/app/routes/users+/$username.tsx    | 2 +-
 .../03.solution.nested-select/app/routes/users+/$username.tsx   | 2 +-
 .../app/routes/users+/$username_+/notes.tsx                     | 2 +-
 .../01.problem.delete/app/routes/users+/$username.tsx           | 2 +-
 .../01.problem.delete/app/routes/users+/$username_+/notes.tsx   | 2 +-
 .../01.solution.delete/app/routes/users+/$username.tsx          | 2 +-
 .../01.solution.delete/app/routes/users+/$username_+/notes.tsx  | 2 +-
 .../02.problem.update/app/routes/users+/$username.tsx           | 2 +-
 .../02.problem.update/app/routes/users+/$username_+/notes.tsx   | 2 +-
 .../02.solution.update/app/routes/users+/$username.tsx          | 2 +-
 .../02.solution.update/app/routes/users+/$username_+/notes.tsx  | 2 +-
 .../03.problem.transactions/app/routes/users+/$username.tsx     | 2 +-
 .../app/routes/users+/$username_+/notes.tsx                     | 2 +-
 .../03.solution.transactions/app/routes/users+/$username.tsx    | 2 +-
 .../app/routes/users+/$username_+/notes.tsx                     | 2 +-
 .../04.problem.nested/app/routes/users+/$username.tsx           | 2 +-
 .../04.problem.nested/app/routes/users+/$username_+/notes.tsx   | 2 +-
 .../04.solution.nested/app/routes/users+/$username.tsx          | 2 +-
 .../04.solution.nested/app/routes/users+/$username_+/notes.tsx  | 2 +-
 exercises/08.sql/01.problem.sql/app/routes/users+/$username.tsx | 2 +-
 .../01.problem.sql/app/routes/users+/$username_+/notes.tsx      | 2 +-
 .../08.sql/01.solution.sql/app/routes/users+/$username.tsx      | 2 +-
 .../01.solution.sql/app/routes/users+/$username_+/notes.tsx     | 2 +-
 .../02.problem.validation/app/routes/users+/$username.tsx       | 2 +-
 .../app/routes/users+/$username_+/notes.tsx                     | 2 +-
 .../02.solution.validation/app/routes/users+/$username.tsx      | 2 +-
 .../app/routes/users+/$username_+/notes.tsx                     | 2 +-
 .../08.sql/03.problem.join/app/routes/users+/$username.tsx      | 2 +-
 .../03.problem.join/app/routes/users+/$username_+/notes.tsx     | 2 +-
 .../08.sql/03.solution.join/app/routes/users+/$username.tsx     | 2 +-
 .../03.solution.join/app/routes/users+/$username_+/notes.tsx    | 2 +-
 .../08.sql/04.problem.order/app/routes/users+/$username.tsx     | 2 +-
 .../04.problem.order/app/routes/users+/$username_+/notes.tsx    | 2 +-
 .../08.sql/04.solution.order/app/routes/users+/$username.tsx    | 2 +-
 .../04.solution.order/app/routes/users+/$username_+/notes.tsx   | 2 +-
 .../01.problem.foreign-keys/app/routes/users+/$username.tsx     | 2 +-
 .../app/routes/users+/$username_+/notes.tsx                     | 2 +-
 .../01.solution.foreign-keys/app/routes/users+/$username.tsx    | 2 +-
 .../app/routes/users+/$username_+/notes.tsx                     | 2 +-
 .../app/routes/users+/$username.tsx                             | 2 +-
 .../app/routes/users+/$username_+/notes.tsx                     | 2 +-
 .../app/routes/users+/$username.tsx                             | 2 +-
 .../app/routes/users+/$username_+/notes.tsx                     | 2 +-
 44 files changed, 44 insertions(+), 44 deletions(-)

diff --git a/exercises/06.querying/02.solution.select/app/routes/users+/$username.tsx b/exercises/06.querying/02.solution.select/app/routes/users+/$username.tsx
index 749b583c..d56bab9c 100644
--- a/exercises/06.querying/02.solution.select/app/routes/users+/$username.tsx
+++ b/exercises/06.querying/02.solution.select/app/routes/users+/$username.tsx
@@ -7,7 +7,7 @@ import { prisma } from '#app/utils/db.server.ts'
 import { getUserImgSrc, invariantResponse } from '#app/utils/misc.tsx'
 
 export async function loader({ params }: DataFunctionArgs) {
-	const user = await prisma.user.findFirst({
+	const user = await prisma.user.findUnique({
 		select: {
 			name: true,
 			username: true,
diff --git a/exercises/06.querying/03.problem.nested-select/app/routes/users+/$username.tsx b/exercises/06.querying/03.problem.nested-select/app/routes/users+/$username.tsx
index 749b583c..d56bab9c 100644
--- a/exercises/06.querying/03.problem.nested-select/app/routes/users+/$username.tsx
+++ b/exercises/06.querying/03.problem.nested-select/app/routes/users+/$username.tsx
@@ -7,7 +7,7 @@ import { prisma } from '#app/utils/db.server.ts'
 import { getUserImgSrc, invariantResponse } from '#app/utils/misc.tsx'
 
 export async function loader({ params }: DataFunctionArgs) {
-	const user = await prisma.user.findFirst({
+	const user = await prisma.user.findUnique({
 		select: {
 			name: true,
 			username: true,
diff --git a/exercises/06.querying/03.solution.nested-select/app/routes/users+/$username.tsx b/exercises/06.querying/03.solution.nested-select/app/routes/users+/$username.tsx
index 749b583c..d56bab9c 100644
--- a/exercises/06.querying/03.solution.nested-select/app/routes/users+/$username.tsx
+++ b/exercises/06.querying/03.solution.nested-select/app/routes/users+/$username.tsx
@@ -7,7 +7,7 @@ import { prisma } from '#app/utils/db.server.ts'
 import { getUserImgSrc, invariantResponse } from '#app/utils/misc.tsx'
 
 export async function loader({ params }: DataFunctionArgs) {
-	const user = await prisma.user.findFirst({
+	const user = await prisma.user.findUnique({
 		select: {
 			name: true,
 			username: true,
diff --git a/exercises/06.querying/03.solution.nested-select/app/routes/users+/$username_+/notes.tsx b/exercises/06.querying/03.solution.nested-select/app/routes/users+/$username_+/notes.tsx
index 62f030c6..655e3280 100644
--- a/exercises/06.querying/03.solution.nested-select/app/routes/users+/$username_+/notes.tsx
+++ b/exercises/06.querying/03.solution.nested-select/app/routes/users+/$username_+/notes.tsx
@@ -5,7 +5,7 @@ import { prisma } from '#app/utils/db.server.ts'
 import { cn, getUserImgSrc, invariantResponse } from '#app/utils/misc.tsx'
 
 export async function loader({ params }: DataFunctionArgs) {
-	const owner = await prisma.user.findFirst({
+	const owner = await prisma.user.findUnique({
 		select: {
 			name: true,
 			username: true,
diff --git a/exercises/07.updating/01.problem.delete/app/routes/users+/$username.tsx b/exercises/07.updating/01.problem.delete/app/routes/users+/$username.tsx
index 749b583c..d56bab9c 100644
--- a/exercises/07.updating/01.problem.delete/app/routes/users+/$username.tsx
+++ b/exercises/07.updating/01.problem.delete/app/routes/users+/$username.tsx
@@ -7,7 +7,7 @@ import { prisma } from '#app/utils/db.server.ts'
 import { getUserImgSrc, invariantResponse } from '#app/utils/misc.tsx'
 
 export async function loader({ params }: DataFunctionArgs) {
-	const user = await prisma.user.findFirst({
+	const user = await prisma.user.findUnique({
 		select: {
 			name: true,
 			username: true,
diff --git a/exercises/07.updating/01.problem.delete/app/routes/users+/$username_+/notes.tsx b/exercises/07.updating/01.problem.delete/app/routes/users+/$username_+/notes.tsx
index 62f030c6..655e3280 100644
--- a/exercises/07.updating/01.problem.delete/app/routes/users+/$username_+/notes.tsx
+++ b/exercises/07.updating/01.problem.delete/app/routes/users+/$username_+/notes.tsx
@@ -5,7 +5,7 @@ import { prisma } from '#app/utils/db.server.ts'
 import { cn, getUserImgSrc, invariantResponse } from '#app/utils/misc.tsx'
 
 export async function loader({ params }: DataFunctionArgs) {
-	const owner = await prisma.user.findFirst({
+	const owner = await prisma.user.findUnique({
 		select: {
 			name: true,
 			username: true,
diff --git a/exercises/07.updating/01.solution.delete/app/routes/users+/$username.tsx b/exercises/07.updating/01.solution.delete/app/routes/users+/$username.tsx
index 749b583c..d56bab9c 100644
--- a/exercises/07.updating/01.solution.delete/app/routes/users+/$username.tsx
+++ b/exercises/07.updating/01.solution.delete/app/routes/users+/$username.tsx
@@ -7,7 +7,7 @@ import { prisma } from '#app/utils/db.server.ts'
 import { getUserImgSrc, invariantResponse } from '#app/utils/misc.tsx'
 
 export async function loader({ params }: DataFunctionArgs) {
-	const user = await prisma.user.findFirst({
+	const user = await prisma.user.findUnique({
 		select: {
 			name: true,
 			username: true,
diff --git a/exercises/07.updating/01.solution.delete/app/routes/users+/$username_+/notes.tsx b/exercises/07.updating/01.solution.delete/app/routes/users+/$username_+/notes.tsx
index 62f030c6..655e3280 100644
--- a/exercises/07.updating/01.solution.delete/app/routes/users+/$username_+/notes.tsx
+++ b/exercises/07.updating/01.solution.delete/app/routes/users+/$username_+/notes.tsx
@@ -5,7 +5,7 @@ import { prisma } from '#app/utils/db.server.ts'
 import { cn, getUserImgSrc, invariantResponse } from '#app/utils/misc.tsx'
 
 export async function loader({ params }: DataFunctionArgs) {
-	const owner = await prisma.user.findFirst({
+	const owner = await prisma.user.findUnique({
 		select: {
 			name: true,
 			username: true,
diff --git a/exercises/07.updating/02.problem.update/app/routes/users+/$username.tsx b/exercises/07.updating/02.problem.update/app/routes/users+/$username.tsx
index 749b583c..d56bab9c 100644
--- a/exercises/07.updating/02.problem.update/app/routes/users+/$username.tsx
+++ b/exercises/07.updating/02.problem.update/app/routes/users+/$username.tsx
@@ -7,7 +7,7 @@ import { prisma } from '#app/utils/db.server.ts'
 import { getUserImgSrc, invariantResponse } from '#app/utils/misc.tsx'
 
 export async function loader({ params }: DataFunctionArgs) {
-	const user = await prisma.user.findFirst({
+	const user = await prisma.user.findUnique({
 		select: {
 			name: true,
 			username: true,
diff --git a/exercises/07.updating/02.problem.update/app/routes/users+/$username_+/notes.tsx b/exercises/07.updating/02.problem.update/app/routes/users+/$username_+/notes.tsx
index 62f030c6..655e3280 100644
--- a/exercises/07.updating/02.problem.update/app/routes/users+/$username_+/notes.tsx
+++ b/exercises/07.updating/02.problem.update/app/routes/users+/$username_+/notes.tsx
@@ -5,7 +5,7 @@ import { prisma } from '#app/utils/db.server.ts'
 import { cn, getUserImgSrc, invariantResponse } from '#app/utils/misc.tsx'
 
 export async function loader({ params }: DataFunctionArgs) {
-	const owner = await prisma.user.findFirst({
+	const owner = await prisma.user.findUnique({
 		select: {
 			name: true,
 			username: true,
diff --git a/exercises/07.updating/02.solution.update/app/routes/users+/$username.tsx b/exercises/07.updating/02.solution.update/app/routes/users+/$username.tsx
index 749b583c..d56bab9c 100644
--- a/exercises/07.updating/02.solution.update/app/routes/users+/$username.tsx
+++ b/exercises/07.updating/02.solution.update/app/routes/users+/$username.tsx
@@ -7,7 +7,7 @@ import { prisma } from '#app/utils/db.server.ts'
 import { getUserImgSrc, invariantResponse } from '#app/utils/misc.tsx'
 
 export async function loader({ params }: DataFunctionArgs) {
-	const user = await prisma.user.findFirst({
+	const user = await prisma.user.findUnique({
 		select: {
 			name: true,
 			username: true,
diff --git a/exercises/07.updating/02.solution.update/app/routes/users+/$username_+/notes.tsx b/exercises/07.updating/02.solution.update/app/routes/users+/$username_+/notes.tsx
index 62f030c6..655e3280 100644
--- a/exercises/07.updating/02.solution.update/app/routes/users+/$username_+/notes.tsx
+++ b/exercises/07.updating/02.solution.update/app/routes/users+/$username_+/notes.tsx
@@ -5,7 +5,7 @@ import { prisma } from '#app/utils/db.server.ts'
 import { cn, getUserImgSrc, invariantResponse } from '#app/utils/misc.tsx'
 
 export async function loader({ params }: DataFunctionArgs) {
-	const owner = await prisma.user.findFirst({
+	const owner = await prisma.user.findUnique({
 		select: {
 			name: true,
 			username: true,
diff --git a/exercises/07.updating/03.problem.transactions/app/routes/users+/$username.tsx b/exercises/07.updating/03.problem.transactions/app/routes/users+/$username.tsx
index 749b583c..d56bab9c 100644
--- a/exercises/07.updating/03.problem.transactions/app/routes/users+/$username.tsx
+++ b/exercises/07.updating/03.problem.transactions/app/routes/users+/$username.tsx
@@ -7,7 +7,7 @@ import { prisma } from '#app/utils/db.server.ts'
 import { getUserImgSrc, invariantResponse } from '#app/utils/misc.tsx'
 
 export async function loader({ params }: DataFunctionArgs) {
-	const user = await prisma.user.findFirst({
+	const user = await prisma.user.findUnique({
 		select: {
 			name: true,
 			username: true,
diff --git a/exercises/07.updating/03.problem.transactions/app/routes/users+/$username_+/notes.tsx b/exercises/07.updating/03.problem.transactions/app/routes/users+/$username_+/notes.tsx
index 62f030c6..655e3280 100644
--- a/exercises/07.updating/03.problem.transactions/app/routes/users+/$username_+/notes.tsx
+++ b/exercises/07.updating/03.problem.transactions/app/routes/users+/$username_+/notes.tsx
@@ -5,7 +5,7 @@ import { prisma } from '#app/utils/db.server.ts'
 import { cn, getUserImgSrc, invariantResponse } from '#app/utils/misc.tsx'
 
 export async function loader({ params }: DataFunctionArgs) {
-	const owner = await prisma.user.findFirst({
+	const owner = await prisma.user.findUnique({
 		select: {
 			name: true,
 			username: true,
diff --git a/exercises/07.updating/03.solution.transactions/app/routes/users+/$username.tsx b/exercises/07.updating/03.solution.transactions/app/routes/users+/$username.tsx
index 749b583c..d56bab9c 100644
--- a/exercises/07.updating/03.solution.transactions/app/routes/users+/$username.tsx
+++ b/exercises/07.updating/03.solution.transactions/app/routes/users+/$username.tsx
@@ -7,7 +7,7 @@ import { prisma } from '#app/utils/db.server.ts'
 import { getUserImgSrc, invariantResponse } from '#app/utils/misc.tsx'
 
 export async function loader({ params }: DataFunctionArgs) {
-	const user = await prisma.user.findFirst({
+	const user = await prisma.user.findUnique({
 		select: {
 			name: true,
 			username: true,
diff --git a/exercises/07.updating/03.solution.transactions/app/routes/users+/$username_+/notes.tsx b/exercises/07.updating/03.solution.transactions/app/routes/users+/$username_+/notes.tsx
index 62f030c6..655e3280 100644
--- a/exercises/07.updating/03.solution.transactions/app/routes/users+/$username_+/notes.tsx
+++ b/exercises/07.updating/03.solution.transactions/app/routes/users+/$username_+/notes.tsx
@@ -5,7 +5,7 @@ import { prisma } from '#app/utils/db.server.ts'
 import { cn, getUserImgSrc, invariantResponse } from '#app/utils/misc.tsx'
 
 export async function loader({ params }: DataFunctionArgs) {
-	const owner = await prisma.user.findFirst({
+	const owner = await prisma.user.findUnique({
 		select: {
 			name: true,
 			username: true,
diff --git a/exercises/07.updating/04.problem.nested/app/routes/users+/$username.tsx b/exercises/07.updating/04.problem.nested/app/routes/users+/$username.tsx
index 749b583c..d56bab9c 100644
--- a/exercises/07.updating/04.problem.nested/app/routes/users+/$username.tsx
+++ b/exercises/07.updating/04.problem.nested/app/routes/users+/$username.tsx
@@ -7,7 +7,7 @@ import { prisma } from '#app/utils/db.server.ts'
 import { getUserImgSrc, invariantResponse } from '#app/utils/misc.tsx'
 
 export async function loader({ params }: DataFunctionArgs) {
-	const user = await prisma.user.findFirst({
+	const user = await prisma.user.findUnique({
 		select: {
 			name: true,
 			username: true,
diff --git a/exercises/07.updating/04.problem.nested/app/routes/users+/$username_+/notes.tsx b/exercises/07.updating/04.problem.nested/app/routes/users+/$username_+/notes.tsx
index 62f030c6..655e3280 100644
--- a/exercises/07.updating/04.problem.nested/app/routes/users+/$username_+/notes.tsx
+++ b/exercises/07.updating/04.problem.nested/app/routes/users+/$username_+/notes.tsx
@@ -5,7 +5,7 @@ import { prisma } from '#app/utils/db.server.ts'
 import { cn, getUserImgSrc, invariantResponse } from '#app/utils/misc.tsx'
 
 export async function loader({ params }: DataFunctionArgs) {
-	const owner = await prisma.user.findFirst({
+	const owner = await prisma.user.findUnique({
 		select: {
 			name: true,
 			username: true,
diff --git a/exercises/07.updating/04.solution.nested/app/routes/users+/$username.tsx b/exercises/07.updating/04.solution.nested/app/routes/users+/$username.tsx
index 749b583c..d56bab9c 100644
--- a/exercises/07.updating/04.solution.nested/app/routes/users+/$username.tsx
+++ b/exercises/07.updating/04.solution.nested/app/routes/users+/$username.tsx
@@ -7,7 +7,7 @@ import { prisma } from '#app/utils/db.server.ts'
 import { getUserImgSrc, invariantResponse } from '#app/utils/misc.tsx'
 
 export async function loader({ params }: DataFunctionArgs) {
-	const user = await prisma.user.findFirst({
+	const user = await prisma.user.findUnique({
 		select: {
 			name: true,
 			username: true,
diff --git a/exercises/07.updating/04.solution.nested/app/routes/users+/$username_+/notes.tsx b/exercises/07.updating/04.solution.nested/app/routes/users+/$username_+/notes.tsx
index 62f030c6..655e3280 100644
--- a/exercises/07.updating/04.solution.nested/app/routes/users+/$username_+/notes.tsx
+++ b/exercises/07.updating/04.solution.nested/app/routes/users+/$username_+/notes.tsx
@@ -5,7 +5,7 @@ import { prisma } from '#app/utils/db.server.ts'
 import { cn, getUserImgSrc, invariantResponse } from '#app/utils/misc.tsx'
 
 export async function loader({ params }: DataFunctionArgs) {
-	const owner = await prisma.user.findFirst({
+	const owner = await prisma.user.findUnique({
 		select: {
 			name: true,
 			username: true,
diff --git a/exercises/08.sql/01.problem.sql/app/routes/users+/$username.tsx b/exercises/08.sql/01.problem.sql/app/routes/users+/$username.tsx
index 749b583c..d56bab9c 100644
--- a/exercises/08.sql/01.problem.sql/app/routes/users+/$username.tsx
+++ b/exercises/08.sql/01.problem.sql/app/routes/users+/$username.tsx
@@ -7,7 +7,7 @@ import { prisma } from '#app/utils/db.server.ts'
 import { getUserImgSrc, invariantResponse } from '#app/utils/misc.tsx'
 
 export async function loader({ params }: DataFunctionArgs) {
-	const user = await prisma.user.findFirst({
+	const user = await prisma.user.findUnique({
 		select: {
 			name: true,
 			username: true,
diff --git a/exercises/08.sql/01.problem.sql/app/routes/users+/$username_+/notes.tsx b/exercises/08.sql/01.problem.sql/app/routes/users+/$username_+/notes.tsx
index 62f030c6..655e3280 100644
--- a/exercises/08.sql/01.problem.sql/app/routes/users+/$username_+/notes.tsx
+++ b/exercises/08.sql/01.problem.sql/app/routes/users+/$username_+/notes.tsx
@@ -5,7 +5,7 @@ import { prisma } from '#app/utils/db.server.ts'
 import { cn, getUserImgSrc, invariantResponse } from '#app/utils/misc.tsx'
 
 export async function loader({ params }: DataFunctionArgs) {
-	const owner = await prisma.user.findFirst({
+	const owner = await prisma.user.findUnique({
 		select: {
 			name: true,
 			username: true,
diff --git a/exercises/08.sql/01.solution.sql/app/routes/users+/$username.tsx b/exercises/08.sql/01.solution.sql/app/routes/users+/$username.tsx
index 749b583c..d56bab9c 100644
--- a/exercises/08.sql/01.solution.sql/app/routes/users+/$username.tsx
+++ b/exercises/08.sql/01.solution.sql/app/routes/users+/$username.tsx
@@ -7,7 +7,7 @@ import { prisma } from '#app/utils/db.server.ts'
 import { getUserImgSrc, invariantResponse } from '#app/utils/misc.tsx'
 
 export async function loader({ params }: DataFunctionArgs) {
-	const user = await prisma.user.findFirst({
+	const user = await prisma.user.findUnique({
 		select: {
 			name: true,
 			username: true,
diff --git a/exercises/08.sql/01.solution.sql/app/routes/users+/$username_+/notes.tsx b/exercises/08.sql/01.solution.sql/app/routes/users+/$username_+/notes.tsx
index 62f030c6..655e3280 100644
--- a/exercises/08.sql/01.solution.sql/app/routes/users+/$username_+/notes.tsx
+++ b/exercises/08.sql/01.solution.sql/app/routes/users+/$username_+/notes.tsx
@@ -5,7 +5,7 @@ import { prisma } from '#app/utils/db.server.ts'
 import { cn, getUserImgSrc, invariantResponse } from '#app/utils/misc.tsx'
 
 export async function loader({ params }: DataFunctionArgs) {
-	const owner = await prisma.user.findFirst({
+	const owner = await prisma.user.findUnique({
 		select: {
 			name: true,
 			username: true,
diff --git a/exercises/08.sql/02.problem.validation/app/routes/users+/$username.tsx b/exercises/08.sql/02.problem.validation/app/routes/users+/$username.tsx
index 749b583c..d56bab9c 100644
--- a/exercises/08.sql/02.problem.validation/app/routes/users+/$username.tsx
+++ b/exercises/08.sql/02.problem.validation/app/routes/users+/$username.tsx
@@ -7,7 +7,7 @@ import { prisma } from '#app/utils/db.server.ts'
 import { getUserImgSrc, invariantResponse } from '#app/utils/misc.tsx'
 
 export async function loader({ params }: DataFunctionArgs) {
-	const user = await prisma.user.findFirst({
+	const user = await prisma.user.findUnique({
 		select: {
 			name: true,
 			username: true,
diff --git a/exercises/08.sql/02.problem.validation/app/routes/users+/$username_+/notes.tsx b/exercises/08.sql/02.problem.validation/app/routes/users+/$username_+/notes.tsx
index 62f030c6..655e3280 100644
--- a/exercises/08.sql/02.problem.validation/app/routes/users+/$username_+/notes.tsx
+++ b/exercises/08.sql/02.problem.validation/app/routes/users+/$username_+/notes.tsx
@@ -5,7 +5,7 @@ import { prisma } from '#app/utils/db.server.ts'
 import { cn, getUserImgSrc, invariantResponse } from '#app/utils/misc.tsx'
 
 export async function loader({ params }: DataFunctionArgs) {
-	const owner = await prisma.user.findFirst({
+	const owner = await prisma.user.findUnique({
 		select: {
 			name: true,
 			username: true,
diff --git a/exercises/08.sql/02.solution.validation/app/routes/users+/$username.tsx b/exercises/08.sql/02.solution.validation/app/routes/users+/$username.tsx
index 749b583c..d56bab9c 100644
--- a/exercises/08.sql/02.solution.validation/app/routes/users+/$username.tsx
+++ b/exercises/08.sql/02.solution.validation/app/routes/users+/$username.tsx
@@ -7,7 +7,7 @@ import { prisma } from '#app/utils/db.server.ts'
 import { getUserImgSrc, invariantResponse } from '#app/utils/misc.tsx'
 
 export async function loader({ params }: DataFunctionArgs) {
-	const user = await prisma.user.findFirst({
+	const user = await prisma.user.findUnique({
 		select: {
 			name: true,
 			username: true,
diff --git a/exercises/08.sql/02.solution.validation/app/routes/users+/$username_+/notes.tsx b/exercises/08.sql/02.solution.validation/app/routes/users+/$username_+/notes.tsx
index 62f030c6..655e3280 100644
--- a/exercises/08.sql/02.solution.validation/app/routes/users+/$username_+/notes.tsx
+++ b/exercises/08.sql/02.solution.validation/app/routes/users+/$username_+/notes.tsx
@@ -5,7 +5,7 @@ import { prisma } from '#app/utils/db.server.ts'
 import { cn, getUserImgSrc, invariantResponse } from '#app/utils/misc.tsx'
 
 export async function loader({ params }: DataFunctionArgs) {
-	const owner = await prisma.user.findFirst({
+	const owner = await prisma.user.findUnique({
 		select: {
 			name: true,
 			username: true,
diff --git a/exercises/08.sql/03.problem.join/app/routes/users+/$username.tsx b/exercises/08.sql/03.problem.join/app/routes/users+/$username.tsx
index 749b583c..d56bab9c 100644
--- a/exercises/08.sql/03.problem.join/app/routes/users+/$username.tsx
+++ b/exercises/08.sql/03.problem.join/app/routes/users+/$username.tsx
@@ -7,7 +7,7 @@ import { prisma } from '#app/utils/db.server.ts'
 import { getUserImgSrc, invariantResponse } from '#app/utils/misc.tsx'
 
 export async function loader({ params }: DataFunctionArgs) {
-	const user = await prisma.user.findFirst({
+	const user = await prisma.user.findUnique({
 		select: {
 			name: true,
 			username: true,
diff --git a/exercises/08.sql/03.problem.join/app/routes/users+/$username_+/notes.tsx b/exercises/08.sql/03.problem.join/app/routes/users+/$username_+/notes.tsx
index 62f030c6..655e3280 100644
--- a/exercises/08.sql/03.problem.join/app/routes/users+/$username_+/notes.tsx
+++ b/exercises/08.sql/03.problem.join/app/routes/users+/$username_+/notes.tsx
@@ -5,7 +5,7 @@ import { prisma } from '#app/utils/db.server.ts'
 import { cn, getUserImgSrc, invariantResponse } from '#app/utils/misc.tsx'
 
 export async function loader({ params }: DataFunctionArgs) {
-	const owner = await prisma.user.findFirst({
+	const owner = await prisma.user.findUnique({
 		select: {
 			name: true,
 			username: true,
diff --git a/exercises/08.sql/03.solution.join/app/routes/users+/$username.tsx b/exercises/08.sql/03.solution.join/app/routes/users+/$username.tsx
index 749b583c..d56bab9c 100644
--- a/exercises/08.sql/03.solution.join/app/routes/users+/$username.tsx
+++ b/exercises/08.sql/03.solution.join/app/routes/users+/$username.tsx
@@ -7,7 +7,7 @@ import { prisma } from '#app/utils/db.server.ts'
 import { getUserImgSrc, invariantResponse } from '#app/utils/misc.tsx'
 
 export async function loader({ params }: DataFunctionArgs) {
-	const user = await prisma.user.findFirst({
+	const user = await prisma.user.findUnique({
 		select: {
 			name: true,
 			username: true,
diff --git a/exercises/08.sql/03.solution.join/app/routes/users+/$username_+/notes.tsx b/exercises/08.sql/03.solution.join/app/routes/users+/$username_+/notes.tsx
index 62f030c6..655e3280 100644
--- a/exercises/08.sql/03.solution.join/app/routes/users+/$username_+/notes.tsx
+++ b/exercises/08.sql/03.solution.join/app/routes/users+/$username_+/notes.tsx
@@ -5,7 +5,7 @@ import { prisma } from '#app/utils/db.server.ts'
 import { cn, getUserImgSrc, invariantResponse } from '#app/utils/misc.tsx'
 
 export async function loader({ params }: DataFunctionArgs) {
-	const owner = await prisma.user.findFirst({
+	const owner = await prisma.user.findUnique({
 		select: {
 			name: true,
 			username: true,
diff --git a/exercises/08.sql/04.problem.order/app/routes/users+/$username.tsx b/exercises/08.sql/04.problem.order/app/routes/users+/$username.tsx
index 749b583c..d56bab9c 100644
--- a/exercises/08.sql/04.problem.order/app/routes/users+/$username.tsx
+++ b/exercises/08.sql/04.problem.order/app/routes/users+/$username.tsx
@@ -7,7 +7,7 @@ import { prisma } from '#app/utils/db.server.ts'
 import { getUserImgSrc, invariantResponse } from '#app/utils/misc.tsx'
 
 export async function loader({ params }: DataFunctionArgs) {
-	const user = await prisma.user.findFirst({
+	const user = await prisma.user.findUnique({
 		select: {
 			name: true,
 			username: true,
diff --git a/exercises/08.sql/04.problem.order/app/routes/users+/$username_+/notes.tsx b/exercises/08.sql/04.problem.order/app/routes/users+/$username_+/notes.tsx
index 62f030c6..655e3280 100644
--- a/exercises/08.sql/04.problem.order/app/routes/users+/$username_+/notes.tsx
+++ b/exercises/08.sql/04.problem.order/app/routes/users+/$username_+/notes.tsx
@@ -5,7 +5,7 @@ import { prisma } from '#app/utils/db.server.ts'
 import { cn, getUserImgSrc, invariantResponse } from '#app/utils/misc.tsx'
 
 export async function loader({ params }: DataFunctionArgs) {
-	const owner = await prisma.user.findFirst({
+	const owner = await prisma.user.findUnique({
 		select: {
 			name: true,
 			username: true,
diff --git a/exercises/08.sql/04.solution.order/app/routes/users+/$username.tsx b/exercises/08.sql/04.solution.order/app/routes/users+/$username.tsx
index 749b583c..d56bab9c 100644
--- a/exercises/08.sql/04.solution.order/app/routes/users+/$username.tsx
+++ b/exercises/08.sql/04.solution.order/app/routes/users+/$username.tsx
@@ -7,7 +7,7 @@ import { prisma } from '#app/utils/db.server.ts'
 import { getUserImgSrc, invariantResponse } from '#app/utils/misc.tsx'
 
 export async function loader({ params }: DataFunctionArgs) {
-	const user = await prisma.user.findFirst({
+	const user = await prisma.user.findUnique({
 		select: {
 			name: true,
 			username: true,
diff --git a/exercises/08.sql/04.solution.order/app/routes/users+/$username_+/notes.tsx b/exercises/08.sql/04.solution.order/app/routes/users+/$username_+/notes.tsx
index 62f030c6..655e3280 100644
--- a/exercises/08.sql/04.solution.order/app/routes/users+/$username_+/notes.tsx
+++ b/exercises/08.sql/04.solution.order/app/routes/users+/$username_+/notes.tsx
@@ -5,7 +5,7 @@ import { prisma } from '#app/utils/db.server.ts'
 import { cn, getUserImgSrc, invariantResponse } from '#app/utils/misc.tsx'
 
 export async function loader({ params }: DataFunctionArgs) {
-	const owner = await prisma.user.findFirst({
+	const owner = await prisma.user.findUnique({
 		select: {
 			name: true,
 			username: true,
diff --git a/exercises/09.optimize/01.problem.foreign-keys/app/routes/users+/$username.tsx b/exercises/09.optimize/01.problem.foreign-keys/app/routes/users+/$username.tsx
index 749b583c..d56bab9c 100644
--- a/exercises/09.optimize/01.problem.foreign-keys/app/routes/users+/$username.tsx
+++ b/exercises/09.optimize/01.problem.foreign-keys/app/routes/users+/$username.tsx
@@ -7,7 +7,7 @@ import { prisma } from '#app/utils/db.server.ts'
 import { getUserImgSrc, invariantResponse } from '#app/utils/misc.tsx'
 
 export async function loader({ params }: DataFunctionArgs) {
-	const user = await prisma.user.findFirst({
+	const user = await prisma.user.findUnique({
 		select: {
 			name: true,
 			username: true,
diff --git a/exercises/09.optimize/01.problem.foreign-keys/app/routes/users+/$username_+/notes.tsx b/exercises/09.optimize/01.problem.foreign-keys/app/routes/users+/$username_+/notes.tsx
index 62f030c6..655e3280 100644
--- a/exercises/09.optimize/01.problem.foreign-keys/app/routes/users+/$username_+/notes.tsx
+++ b/exercises/09.optimize/01.problem.foreign-keys/app/routes/users+/$username_+/notes.tsx
@@ -5,7 +5,7 @@ import { prisma } from '#app/utils/db.server.ts'
 import { cn, getUserImgSrc, invariantResponse } from '#app/utils/misc.tsx'
 
 export async function loader({ params }: DataFunctionArgs) {
-	const owner = await prisma.user.findFirst({
+	const owner = await prisma.user.findUnique({
 		select: {
 			name: true,
 			username: true,
diff --git a/exercises/09.optimize/01.solution.foreign-keys/app/routes/users+/$username.tsx b/exercises/09.optimize/01.solution.foreign-keys/app/routes/users+/$username.tsx
index 749b583c..d56bab9c 100644
--- a/exercises/09.optimize/01.solution.foreign-keys/app/routes/users+/$username.tsx
+++ b/exercises/09.optimize/01.solution.foreign-keys/app/routes/users+/$username.tsx
@@ -7,7 +7,7 @@ import { prisma } from '#app/utils/db.server.ts'
 import { getUserImgSrc, invariantResponse } from '#app/utils/misc.tsx'
 
 export async function loader({ params }: DataFunctionArgs) {
-	const user = await prisma.user.findFirst({
+	const user = await prisma.user.findUnique({
 		select: {
 			name: true,
 			username: true,
diff --git a/exercises/09.optimize/01.solution.foreign-keys/app/routes/users+/$username_+/notes.tsx b/exercises/09.optimize/01.solution.foreign-keys/app/routes/users+/$username_+/notes.tsx
index 62f030c6..655e3280 100644
--- a/exercises/09.optimize/01.solution.foreign-keys/app/routes/users+/$username_+/notes.tsx
+++ b/exercises/09.optimize/01.solution.foreign-keys/app/routes/users+/$username_+/notes.tsx
@@ -5,7 +5,7 @@ import { prisma } from '#app/utils/db.server.ts'
 import { cn, getUserImgSrc, invariantResponse } from '#app/utils/misc.tsx'
 
 export async function loader({ params }: DataFunctionArgs) {
-	const owner = await prisma.user.findFirst({
+	const owner = await prisma.user.findUnique({
 		select: {
 			name: true,
 			username: true,
diff --git a/exercises/09.optimize/02.problem.multi-column-index/app/routes/users+/$username.tsx b/exercises/09.optimize/02.problem.multi-column-index/app/routes/users+/$username.tsx
index 749b583c..d56bab9c 100644
--- a/exercises/09.optimize/02.problem.multi-column-index/app/routes/users+/$username.tsx
+++ b/exercises/09.optimize/02.problem.multi-column-index/app/routes/users+/$username.tsx
@@ -7,7 +7,7 @@ import { prisma } from '#app/utils/db.server.ts'
 import { getUserImgSrc, invariantResponse } from '#app/utils/misc.tsx'
 
 export async function loader({ params }: DataFunctionArgs) {
-	const user = await prisma.user.findFirst({
+	const user = await prisma.user.findUnique({
 		select: {
 			name: true,
 			username: true,
diff --git a/exercises/09.optimize/02.problem.multi-column-index/app/routes/users+/$username_+/notes.tsx b/exercises/09.optimize/02.problem.multi-column-index/app/routes/users+/$username_+/notes.tsx
index 62f030c6..655e3280 100644
--- a/exercises/09.optimize/02.problem.multi-column-index/app/routes/users+/$username_+/notes.tsx
+++ b/exercises/09.optimize/02.problem.multi-column-index/app/routes/users+/$username_+/notes.tsx
@@ -5,7 +5,7 @@ import { prisma } from '#app/utils/db.server.ts'
 import { cn, getUserImgSrc, invariantResponse } from '#app/utils/misc.tsx'
 
 export async function loader({ params }: DataFunctionArgs) {
-	const owner = await prisma.user.findFirst({
+	const owner = await prisma.user.findUnique({
 		select: {
 			name: true,
 			username: true,
diff --git a/exercises/09.optimize/02.solution.multi-column-index/app/routes/users+/$username.tsx b/exercises/09.optimize/02.solution.multi-column-index/app/routes/users+/$username.tsx
index 749b583c..d56bab9c 100644
--- a/exercises/09.optimize/02.solution.multi-column-index/app/routes/users+/$username.tsx
+++ b/exercises/09.optimize/02.solution.multi-column-index/app/routes/users+/$username.tsx
@@ -7,7 +7,7 @@ import { prisma } from '#app/utils/db.server.ts'
 import { getUserImgSrc, invariantResponse } from '#app/utils/misc.tsx'
 
 export async function loader({ params }: DataFunctionArgs) {
-	const user = await prisma.user.findFirst({
+	const user = await prisma.user.findUnique({
 		select: {
 			name: true,
 			username: true,
diff --git a/exercises/09.optimize/02.solution.multi-column-index/app/routes/users+/$username_+/notes.tsx b/exercises/09.optimize/02.solution.multi-column-index/app/routes/users+/$username_+/notes.tsx
index 62f030c6..655e3280 100644
--- a/exercises/09.optimize/02.solution.multi-column-index/app/routes/users+/$username_+/notes.tsx
+++ b/exercises/09.optimize/02.solution.multi-column-index/app/routes/users+/$username_+/notes.tsx
@@ -5,7 +5,7 @@ import { prisma } from '#app/utils/db.server.ts'
 import { cn, getUserImgSrc, invariantResponse } from '#app/utils/misc.tsx'
 
 export async function loader({ params }: DataFunctionArgs) {
-	const owner = await prisma.user.findFirst({
+	const owner = await prisma.user.findUnique({
 		select: {
 			name: true,
 			username: true,