-- 迁移文件：0023_add_featured_and_department.sql
-- 功能：添加精选功能和部门信息字段

-- 1. User 表添加部门字段
ALTER TABLE "User" ADD COLUMN IF NOT EXISTS "department" varchar(256) DEFAULT NULL;

-- 2. GeneratedImage 表添加精选字段
ALTER TABLE "GeneratedImage" ADD COLUMN IF NOT EXISTS "isFeatured" boolean DEFAULT false NOT NULL;
ALTER TABLE "GeneratedImage" ADD COLUMN IF NOT EXISTS "featuredAt" timestamp DEFAULT NULL;
ALTER TABLE "GeneratedImage" ADD COLUMN IF NOT EXISTS "featuredBy" uuid DEFAULT NULL;

-- 3. 创建精选索引加速查询
CREATE INDEX IF NOT EXISTS "idx_generated_image_featured" ON "GeneratedImage"("isFeatured") WHERE "isFeatured" = true;