null field 中文意思是什麼
null field
解釋
空白欄位-
Similarly, antimagic field does not hinder psionics, nor does null psionics field disrupt magic within its area
類似地， 「防魔法力場」無法阻礙靈能，而「反靈能力場」也無法妨害魔法。 -
They do not function in areas where psionics and / or magic is suppressed or negated ( such as an antimagic field or a null psionics field )
這些能力在靈能和/或魔法被壓制或消解（例如「防魔法力場」和「反靈能力場」 ）的區域無法生效。 -
Gets or sets a value indicating whether empty string values are converted to a null reference nothing in visual basic when the field values are retrieved from the data source
獲取或設置一個值，該值指示在從數據源檢索欄位值時，是否將空字元串（ " ）值轉換為空引用（在visual basic中為nothing ） 。 -
Class and indicates whether the field is the primary key for the data row, whether the field is a database identity field, and whether the field can be null
類的新實例，並指示該欄位是否是數據行的主鍵，該欄位是否是數據庫標識欄位，以及該欄位是否可以為空。 -
Class and indicates whether the field is the primary key for the data row, whether it is a database identity field, and whether it can be null and sets the length of the field
類的新實例，指示該欄位是否是數據行的主鍵，該欄位是否是數據庫標識欄位以及該欄位是否可以為空，並設置該欄位的長度。 -
Before looking into the null representations, first decide why you might want to use an element versus an attribute for an object field
在研究空表示之前，首先確定可能需要在對象欄位中使用元素與屬性的原因。 -
Return whether the specified field is set to null
返回是否將指定欄位設置為空。 -
A null field descriptor is the descriptor that forms the blank division in export
一個空白欄位描述符是在輸出中形成空格的描述符。 -
The prefix characters record the length of the data value in the field, or contain - 1 when the value is null
對連接執行sql語句后，應用程序必須先檢索完結果集中的所有行，才能對該連接執行任何其他操作。 -
For each non - null variable - length field, the record header contains the length of the column in one or two bytes
對于每個非空的變長欄位，記錄頭使用一或兩個位元組包含了列的長度。 -
The new genetic laws observed recently in the ion - beam - induced wheat, and the advance in wheat breedings through ion - beam - mediated transfer of null dna molecule, were also presented thus pointing out the critically unsolved questions and perspectives of ion beam technology in the field of wheat breedings
還介紹了最近發現的離子束誘變小麥遺傳新規律和離子束輔助外源裸露大分子dna轉移在小麥育種中的新進展，提出了離子束生物技術在育種領域急待解決的問題和應用前景。 -
For each new field you need a tedit to hold the fieldname, a drop - down combobox to hold the field type, another tedit for some optional additional information, and finally a tcheckbox to specify if the field can be null or not
對于每個新欄位，都需要tedit來存放文件名，還需要下拉式combobox來存放欄位類型，另一個tedit是用於一些可選附加信息的，最後，要使用tcheckbox來指定該欄位可否為null 。 -
In addition, @ isnull fieldname contains 1 if the source field contains null, and 0 if it does not
此外，如果源欄位包含空值，則@ isnull fieldname包含1如果不包含空值，則包含0 。 -
The process of inserting meaningless characters, such as null characters, zeros, or spaces, into the unused portions of a field, record, or fixed - length block of data
一種插入一些無意義字元的處理方法。例如，在一個欄位、記錄或固定長度數據塊的不用部分插入空字元、零或空格。 -
If you want to add a field called personid of type integer, which should not be null, and a field name of type character with a length of 42, which could be null, then the sql command would be
如果要添加名為personid和name的欄位，前者的欄位類型為integer ，並且不應該為null ，後者的欄位類型為character ， length為42 ，並且可以為null ，那麼， sql命令將如下所示：
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