Update migration.sql

week-11/solution/prisma/migrations/20240311164032_init/migration.sql

@@ -1,52 +1,42 @@
--- CreateTable
+-- CreateUserTable
 CREATE TABLE "User" (
     "id" SERIAL NOT NULL,
     "username" TEXT NOT NULL,
     "email" TEXT NOT NULL,
     "password" TEXT NOT NULL,
-
-    CONSTRAINT "User_pkey" PRIMARY KEY ("id")
+
+    CONSTRAINT "User_pkey" PRIMARY KEY ("id"),
+    CONSTRAINT "User_email_key" UNIQUE ("email"), -- Ensure unique email
+    CONSTRAINT "User_username_key" UNIQUE ("username") -- Ensure unique username
 );
 
--- CreateTable
+-- CreatePostsTable
 CREATE TABLE "Posts" (
     "id" SERIAL NOT NULL,
     "title" TEXT NOT NULL,
     "body" TEXT NOT NULL,
     "userId" INTEGER NOT NULL,
     "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
-
-    CONSTRAINT "Posts_pkey" PRIMARY KEY ("id")
+
+    CONSTRAINT "Posts_pkey" PRIMARY KEY ("id"),
+    CONSTRAINT "Posts_userId_fkey" FOREIGN KEY ("userId") REFERENCES "User"("id") ON DELETE RESTRICT ON UPDATE CASCADE
 );
 
--- CreateTable
+-- CreateTagsTable
 CREATE TABLE "Tags" (
     "id" SERIAL NOT NULL,
     "tag" TEXT NOT NULL,
-
-    CONSTRAINT "Tags_pkey" PRIMARY KEY ("id")
+
+    CONSTRAINT "Tags_pkey" PRIMARY KEY ("id"),
+    CONSTRAINT "Tags_tag_key" UNIQUE ("tag") -- Ensure unique tag name
 );
 
--- CreateTable
+-- CreateJoinTableForPostsAndTags
 CREATE TABLE "_PostsToTags" (
-    "A" INTEGER NOT NULL,
-    "B" INTEGER NOT NULL
+    "postId" INTEGER NOT NULL,
+    "tagId" INTEGER NOT NULL,
+
+    CONSTRAINT "_PostsToTags_pkey" PRIMARY KEY ("postId", "tagId"),
+    CONSTRAINT "_PostsToTags_postId_fkey" FOREIGN KEY ("postId") REFERENCES "Posts"("id") ON DELETE CASCADE ON UPDATE CASCADE,
+    CONSTRAINT "_PostsToTags_tagId_fkey" FOREIGN KEY ("tagId") REFERENCES "Tags"("id") ON DELETE CASCADE ON UPDATE CASCADE
 );
-
--- CreateIndex
-CREATE UNIQUE INDEX "Tags_tag_key" ON "Tags"("tag");
-
--- CreateIndex
-CREATE UNIQUE INDEX "_PostsToTags_AB_unique" ON "_PostsToTags"("A", "B");
-
--- CreateIndex
-CREATE INDEX "_PostsToTags_B_index" ON "_PostsToTags"("B");
-
--- AddForeignKey
-ALTER TABLE "Posts" ADD CONSTRAINT "Posts_userId_fkey" FOREIGN KEY ("userId") REFERENCES "User"("id") ON DELETE RESTRICT ON UPDATE CASCADE;
-
--- AddForeignKey
-ALTER TABLE "_PostsToTags" ADD CONSTRAINT "_PostsToTags_A_fkey" FOREIGN KEY ("A") REFERENCES "Posts"("id") ON DELETE CASCADE ON UPDATE CASCADE;
-
--- AddForeignKey
-ALTER TABLE "_PostsToTags" ADD CONSTRAINT "_PostsToTags_B_fkey" FOREIGN KEY ("B") REFERENCES "Tags"("id") ON DELETE CASCADE ON UPDATE CASCADE;