feat: 统一sql命名、函数命名

internal/db/schema/files.sql

@@ -1,12 +1,13 @@
 CREATE TABLE files
 (
     id            INTEGER PRIMARY KEY GENERATED ALWAYS AS IDENTITY,
-    file_name     TEXT      NOT NULL,
-    file_path     TEXT      NOT NULL,
-    original_name TEXT      NOT NULL,
-    folder_name   TEXT      NOT NULL,
-    mime_type     TEXT      NOT NULL,
-    file_size     BIGINT    NOT NULL,
+    file_name     TEXT        NOT NULL,
+    file_path     TEXT        NOT NULL,
+    file_url      TEXT        NOT NULL,
+    original_name TEXT        NOT NULL,
+    folder_name   TEXT        NOT NULL,
+    mime_type     TEXT        NOT NULL,
+    file_size     BIGINT      NOT NULL,
     created_at    TIMESTAMPTZ NOT NULL DEFAULT NOW(),
     updated_at    TIMESTAMPTZ
 );
@@ -20,6 +21,7 @@ EXECUTE FUNCTION update_updated_at_column();
 COMMENT ON COLUMN files.id IS '主键ID';
 COMMENT ON COLUMN files.file_name IS '文件名 xxx.jpg';
 COMMENT ON COLUMN files.file_path IS '文件路径 带path /xxx/xxx.jpg';
+COMMENT ON COLUMN files.file_url IS '完整路径';
 COMMENT ON COLUMN files.original_name IS '原始文件名';
 COMMENT ON COLUMN files.folder_name IS '文件夹名称';
 COMMENT ON COLUMN files.mime_type IS 'mime_type';