-- CreateTable
CREATE TABLE "page_links" (
    "id" TEXT NOT NULL,
    "from_page_id" TEXT NOT NULL,
    "to_page_id" TEXT,
    "target_slug" TEXT NOT NULL,

    CONSTRAINT "page_links_pkey" PRIMARY KEY ("id")
);

-- CreateIndex
CREATE INDEX "page_links_to_page_id_idx" ON "page_links"("to_page_id");

-- CreateIndex
CREATE INDEX "page_links_target_slug_idx" ON "page_links"("target_slug");

-- CreateIndex
CREATE UNIQUE INDEX "page_links_from_page_id_target_slug_key" ON "page_links"("from_page_id", "target_slug");

-- AddForeignKey
ALTER TABLE "page_links" ADD CONSTRAINT "page_links_from_page_id_fkey" FOREIGN KEY ("from_page_id") REFERENCES "pages"("id") ON DELETE CASCADE ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "page_links" ADD CONSTRAINT "page_links_to_page_id_fkey" FOREIGN KEY ("to_page_id") REFERENCES "pages"("id") ON DELETE SET NULL ON UPDATE CASCADE;