diff --git a/doc/sql/ddl/20210716_oss_init.sql b/doc/sql/ddl/20210716_oss_init.sql
index 78c405b..f6fe324 100644
--- a/doc/sql/ddl/20210716_oss_init.sql
+++ b/doc/sql/ddl/20210716_oss_init.sql
@@ -120,7 +120,7 @@ CREATE TABLE `file`  (
     `is_delete` tinyint(4) NOT NULL DEFAULT 0 COMMENT '是否逻辑删除(0：未删除，1：已删除)',
     PRIMARY KEY (`id`),
     INDEX idx_create_at(create_at),
+    INDEX idx_url_md5_app_code(url_md5, app_code),
     UNIQUE KEY uk_file_uuid(`file_uuid`),
-    UNIQUE KEY uk_file_md5(`file_uuid`),
     UNIQUE KEY idx_app_code_bucket_name_file_url(`app_channel_bucket_no`, `directory`, `file_uuid`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='文件上传记录';
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