如果一个度量引用其他度量，那么在为它产生SQL表达式时，不能使用聚合函数来为嵌套的度量产生SQL表达式。
When generating SQL expressions for measures that reference other measures, the aggregation function might not be used to form the SQL expression for the nested measures.
这个功能的局限是，只能使用它探测函数，而不能探测应用程序的功能性片段。
The limit of this functionality is that it can only be used for probing functions, rather than functional fragments, of an application.
如果将某个UDR用于函数索引，则该U DR不能使用集合数据类型作为参数类型。
A UDR used by a functional index cannot have arguments that are collection data types.
不能使用DB2的decomp例程或XMLTABLE函数直接分解到这种模式。
You cannot shred into this schema directly using DB2's decomp routine or XMLTABLE function.
但是您不能使用类型参数访问构造函数，因为在编译的时候还不知道要构造什么类，因此也就不知道使用什么构造函数。
But you cannot use a type parameter to access a constructor because, at compile time, you don't know what class is being constructed and therefore what constructors are available.
如果发现扩展函数比样式表函数更好，可以定义样式表函数作为扩展函数不能使用时的第二选择。
If you find that an extension function can do a better job than a stylesheet function, then you can define the stylesheet function to be the second choice when the extension function is not available.
然而，ElementTree对XPath的支持是有限的：您不能使用完整XPath所包含的各种函数，也不能按属性进行搜索。
However, XPath support in ElementTree is limited: you cannot use the various functions contained in full XPath, nor can you search on attributes.
如果在sql语句的select子句的XMLQUERY函数中使用xml谓词，则这些谓词不会从结果集中排除任何行，因此不能使用索引。
If you use XML predicates in the XMLQUERY function in the select clause of an SQL statement, these predicates do not eliminate any rows from the result set and therefore cannot use an index.
你的第一个解决方案向读者传达，拷贝构造函数是私有的，不能使用。
Your first solution conveys to the reader that the copy-constructor is private and is not to be used.
在多于一个栏位的情况下不能使用聚合函数来对一个表的行进行分组。
F. You can not group by the rows of a table by more than one column while using aggregate functions.
且导出DllGetClassObject。 （你不能使用_declspec（dllexport）因为这个函数已经在ole2.h里以不同的修饰进行了声明）。
DEF, and export DllGetClassObject. (You cannot use _declspec(dllexport) because the function is already declared in ole2. h with different modifiers.
且导出DllGetClassObject。 （你不能使用_declspec（dllexport）因为这个函数已经在ole2.h里以不同的修饰进行了声明）。
DEF, and export DllGetClassObject. (You cannot use _declspec(dllexport) because the function is already declared in ole2. h with different modifiers.
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