In the above example, the following statement would access Actor specific features: base_Actor null implies base_Actor.someFeatureXyz.
在以下的示例中, 接下来的声明将会访问动作指定的特性: base_Actor null 应用于 base_Actor.someFeatureXyz.
If the condition evaluates to FALSE or NULL, the loop is bypassed, and control passes to the next statement.
如果条件的求值结果为FALSE或NULL,那么将绕过循环,并且控制被传递给下一条语句。
So in the example above, the NOT NULL constraint would get violated, and the INSERT statement would error out.
因此,在上面的示例中,会违反 NOT NULL 约束,INSERT 语句会出错。
应用推荐