宽松化pairs表约束

prisma/migrations/20260106112014_relax_unique_constraint_on_pairs/migration.sql

@@ -0,0 +1,11 @@
+/*
+  Warnings:
+
+  - A unique constraint covering the columns `[folder_id,language1,language2,text1,text2]` on the table `pairs` will be added. If there are existing duplicate values, this will fail.
+
+*/
+-- DropIndex
+DROP INDEX "pairs_folder_id_language1_language2_text1_key";
+
+-- CreateIndex
+CREATE UNIQUE INDEX "pairs_folder_id_language1_language2_text1_text2_key" ON "pairs"("folder_id", "language1", "language2", "text1", "text2");

prisma/schema.prisma

@@ -87,7 +87,7 @@ model Pair {
 
   folder Folder @relation(fields: [folderId], references: [id], onDelete: Cascade)
 
-  @@unique([folderId, language1, language2, text1])
+  @@unique([folderId, language1, language2, text1, text2])
   @@index([folderId])
   @@map("pairs")
 }