project-knedita/prisma/migrations/20230727154621_alter_like_model_fields/migration.sql

/*
  Warnings:

  - You are about to drop the column `commentId` on the `Like` table. All the data in the column will be lost.
  - You are about to drop the column `postId` on the `Like` table. All the data in the column will be lost.
  - A unique constraint covering the columns `[userId,targetType,targetId]` on the table `Like` will be added. If there are existing duplicate values, this will fail.
  - Added the required column `targetId` to the `Like` table without a default value. This is not possible if the table is not empty.
  - Added the required column `targetType` to the `Like` table without a default value. This is not possible if the table is not empty.

*/
-- DropForeignKey
ALTER TABLE "Like" DROP CONSTRAINT "Like_commentId_fkey";

-- DropForeignKey
ALTER TABLE "Like" DROP CONSTRAINT "Like_postId_fkey";

-- DropForeignKey
ALTER TABLE "Like" DROP CONSTRAINT "Like_userId_fkey";

-- AlterTable
ALTER TABLE "Like" DROP COLUMN "commentId",
DROP COLUMN "postId",
ADD COLUMN     "targetId" TEXT NOT NULL,
ADD COLUMN     "targetType" TEXT NOT NULL;

-- CreateIndex
CREATE UNIQUE INDEX "Like_userId_targetType_targetId_key" ON "Like"("userId", "targetType", "targetId");

-- AddForeignKey
ALTER TABLE "Like" ADD CONSTRAINT "Like_userId_fkey" FOREIGN KEY ("userId") REFERENCES "User"("id") ON DELETE RESTRICT ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "Like" ADD CONSTRAINT "PostLikes" FOREIGN KEY ("targetId") REFERENCES "Post"("id") ON DELETE RESTRICT ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "Like" ADD CONSTRAINT "CommentLikes" FOREIGN KEY ("targetId") REFERENCES "Comments"("id") ON DELETE RESTRICT ON UPDATE CASCADE;