SQL Server 的未來版本將會移除 CREATE RULE 與 DROP RULE。請避免在新的開發工作中使用 CREATE RULE 與 DROP RULE，並計劃修改目前使用它們的應用程式。請改用 CREATE TABLE 或 ALTER TABLE 的CHECK 關鍵字所建立的檢查條件約束。

CREATE RULE and DROP RULE will be removed in a future version of SQL Server. Avoid using CREATE RULE and DROP RULE in new development work, and plan to modify applications that currently use them. Use check constraints instead, which are created using the CHECK keyword of CREATE TABLE or ALTER TABLE.