diff --git a/scripts/create_tables.py b/scripts/create_tables.py
index 6ebacdf..8bc1814 100644
--- a/scripts/create_tables.py
+++ b/scripts/create_tables.py
@@ -38,6 +38,29 @@ _PARAMS_INIT = [
     ("workspace_base", "/d/pipeline/workspaces"),
 ]
 
+# sd_features 功能/需求表 DDL（手写，避开 json2ddl 的 DEFAULT ''N'' bug；索引内联避免重复建 Duplicate key name）
+_SD_FEATURES_DDL = """
+CREATE TABLE IF NOT EXISTS sd_features (
+  `id` VARCHAR(32) NOT NULL comment '主键ID',
+  `project_id` VARCHAR(32) NOT NULL comment '项目ID',
+  `iteration_id` VARCHAR(32) comment '迭代ID',
+  `feature_name` VARCHAR(200) NOT NULL comment '功能名称',
+  `description` text comment '功能描述',
+  `feature_type` VARCHAR(20) NOT NULL DEFAULT 'new_feature' comment '功能类型',
+  `priority` VARCHAR(10) NOT NULL DEFAULT 'P2' comment '优先级',
+  `status` VARCHAR(20) NOT NULL DEFAULT 'proposed' comment '功能状态',
+  `acceptance_criteria` text comment '验收标准',
+  `task_id` VARCHAR(32) comment '关联Pipeline任务ID',
+  `created_by` VARCHAR(32) comment '创建人',
+  `created_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL comment '创建时间',
+  `updated_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP comment '更新时间',
+  primary key(id),
+  KEY idx_sd_features_project(project_id),
+  KEY idx_sd_features_iteration(iteration_id),
+  KEY idx_sd_features_status(status)
+) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci engine=innodb comment '功能/需求表';
+"""
+
 
 def split_ddl(ddl):
     """按分号分割 DDL，跳过注释行和空语句。"""
@@ -141,6 +164,13 @@ async def main():
         except Exception as e:
             print(f'  WARN: pipeline_agent_questions migrate failed: {e}')
 
+        # sd_features 功能/需求表（pipeline-sdlc 业务表）幂等建表——手写 DDL 避开 json2ddl 的 DEFAULT ''N'' bug
+        try:
+            await sor.execute(_SD_FEATURES_DDL, {})
+            print('  tables: sd_features ensured (idempotent)')
+        except Exception as e:
+            print(f'  WARN: sd_features ensure failed: {e}')
+
 
 if __name__ == '__main__':
     asyncio.run(main())