update

ddl/files.sql

@@ -1,25 +1,16 @@
--- Files table: stores uploaded file metadata
 CREATE TABLE IF NOT EXISTS files (
-    id BIGSERIAL PRIMARY KEY,
+    id BIGSERIAL,
     file_name VARCHAR(255) NOT NULL,
     file_key VARCHAR(500) NOT NULL UNIQUE,
-    byte_size BIGINT NOT NULL,
-    created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
+    created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
+    PRIMARY KEY (id)
 );
 
--- Index for looking up files by key (most common query)
-CREATE INDEX IF NOT EXISTS idx_files_file_key ON files(file_key);
+COMMENT ON TABLE files IS 'Files table for storing uploaded files';
 
--- Index for sorting files by creation date
-CREATE INDEX IF NOT EXISTS idx_files_created_at ON files(created_at DESC);
+COMMENT ON COLUMN files.id IS 'Unique identifier for the file';
+COMMENT ON COLUMN files.file_name IS 'Name of the uploaded file';
+COMMENT ON COLUMN files.file_key IS 'Unique key for the file storage';
+COMMENT ON COLUMN files.created_at IS 'Timestamp when the file was uploaded';
 
--- Index for file size queries
-CREATE INDEX IF NOT EXISTS idx_files_byte_size ON files(byte_size);
-
--- Comments on columns
-COMMENT ON TABLE files IS 'File metadata table for uploaded files';
-COMMENT ON COLUMN files.id IS 'Primary key, auto-incrementing file ID';
-COMMENT ON COLUMN files.file_name IS 'Original name of the uploaded file';
-COMMENT ON COLUMN files.file_key IS 'Unique storage key/path for the file';
-COMMENT ON COLUMN files.byte_size IS 'File size in bytes';
-COMMENT ON COLUMN files.created_at IS 'Timestamp when the file was uploaded';
+CREATE INDEX idx_files_created_at ON files(created_at);