When I (along with many other people) had a lot of trouble trying to install SQL Server Management Studio in an attempt to switch from the SQL Server 2008 R2 evaluation to the free Express version, I ...
created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP, updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP, CONSTRAINT fk_project_documents_project_id FOREIGN KEY ...
-- B-11:修改 book_audio_pipeline_runs 表 user_id 为可空 ALTER TABLE `book_audio_pipeline_runs` DROP FOREIGN KEY `fk_book_audio_runs_user`; ALTER TABLE `book_audio_pipeline_runs` ...