關於「CONSTRAINT PRIMARY KEY」標籤，搜尋引擎有相關的訊息討論：

SQL PRIMARY KEY Constraint - W3Schoolswww.w3schools.com › sql › sql_primarykeyHow to add a primary key and foreign key to an existing table in ...stackoverflow.com › questions › how-to-add-a-primary-ke...Primary and Foreign Key Constraints - SQL Server - Microsoft Learnlearn.mi