nulls
美 [nʌl] 
英
- adj.没有价值的；无用的；【法】无法律效力的；【科技】没有
- n.【数】数字零；【计】空位；空白符号；【电子】无信号
- v.抵消；〈罕〉【法】宣布无效；〈罕〉彻底消灭
- 网络列的空行数；空值排序；虚元
词形变化
复数：nulls 过去式：nulled 现在分词：nulling 反义词
同义词
英汉解释
英英解释
例句
Char and binary columns that do not allow nulls are always padded to the length of the column.
始终将不允许为空的char和binary列填充到列长。
Since the requirement is to only suppress nulls, the visual null suppression can be replaced by the Null suppression on the actual query.
因为需求是仅抑制nulls，可视的nullsuppression可由实际查询上的Nullsuppression替换。
Note that this setting is independent of the nulls setting in the columns contained in the foreign key.
注意该设置与外键中所包含列的nulls设置无关。
Add table columns , and specify the column name and data type of the new column, as well as whether the column allows nulls .
添加表列，指定列名和新列的数据类型以及该列是否允许空值。
Define a primary key to enforce uniqueness for values entered in specified columns that do not allow nulls .
定义主键可以对在不允许空值的指定列中输入的值强制唯一性。
The ANSI_NULLS option must have been set to ON for the execution of all CREATE TABLE statements that create tables referenced by the view.
要执行所有CREATETABLE语句以创建视图引用的表，ANSI_NULLS选项必须设置为ON。
Analysis Services ignores nulls when calculating the maximum value in a set of numbers.
计算一组数值的最大值时，AnalysisServices将忽略空值。
The bcp command and BULK INSERT statement both allow you to specify that nulls values be retained.
bcp命令和BULKINSERT语句都允许指定保留空值。
RPG uses a 1 character field (like an indicator) to determine if a column contains nulls.
RPG使用一个1字符字段（比如一个指示符）来确定列是否包含空值。
The aggregate uses custom serialization, has a maximum size of 8000 bytes when serialized, and is invariant to nulls, duplicates, and order.
该聚合使用自定义序列化，在进行序列化时具有8000字节的最大大小，且与空值、重复值和顺序无关。
If SET ANSI_NULLS is not specified, the setting of the ANSI_NULLS option of the current database applies.
如果未指定SETANSI_NULLS，则应用当前数据库的ANSI_NULLS选项设置。
To edit this property, click the Allow Nulls checkbox corresponding to the column in the top pane of Table Designer.
若要编辑此属性，请在表设计器的顶部窗格中单击与列对应的“允许空值”复选框。
New columns defined without explicit nullability do not allow nulls.
未显式定义为空性的新列不允许使用空值。
If the column is NULLABLE, any number of NULLs can be inserted in that column.
如果此列可以包含NULL值，就可以在此列中插入任意数量的NULL值。
The ANSI_NULLS and QUOTED_IDENTIFIER options must have been set to ON when the CREATE VIEW statement was executed.
当执行CREATEVIEW语句时，ANSI_NULLS和QUOTED_IDENTIFIER选项必须设置为ON。
That code would have created a new trail with a Trail object with nulls for all attributes.
这个代码应当创建一条新路线，该路线有一个所有属性都为null的Trail对象。
For each database column, the grid displays its fundamental attributes: column name, data type, and nulls-allowed setting.
对于每个数据库列，该网格显示其基本属性：列名、数据类型和允许空值设置。
Literals represent fixed values - numbers, character strings, booleans, or nulls.
文字表示固定的值数字、字符、字符串、布尔型或空值。
For this report run only nulls are being suppressed on both the row and column edge of the crosstab.
对于该报表运行，仅在交叉表的行和列边缘上抑制了nulls。
When SET ANSI_NULLS is ON, an operator that has one or two NULL expressions returns UNKNOWN.
当SETANSI_NULLS为ON时，带有一个或两个NULL表达式的运算符返回UNKNOWN。
Specify whether the transformation handles null values as equal to other nulls.
指定转换是否将空值处理为等于其他空值。
If WITH VALUES is not specified for columns that allow nulls, the value NULL is stored in the new column in existing rows.
如果没有为允许空值的列指定WITHVALUES，则在现有行的新列中存储NULL值。
A connection must have the ANSI_NULLS and ANSI_WARNINGS options set ON before the connection can execute distributed queries.
必须先将连接的ANSI_NULLS和ANSI_WARNINGS选项设置为ON，然后该连接才能执行分布式查询。
The two nulls indicate that we do not want to change the last access time or creation time for this file.
这两个null指出，我们不想改变这一文件的最后访问时间或者创建时间。
It's the situation where, for instance, someone passes a null value to a method not coded to handle nulls.
比方说，把null值传入一个并未编写如何处理null值的方法中，这就是一种边界情况。
For more information about the ANSI_NULLS database option, see ALTER DATABASE (Transact-SQL) and Setting Database Options.
有关ANSI_NULLS数据库选项的详细信息，请参阅ALTERDATABASE（Transact-SQL）和设置数据库选项。
Therefore, any client session settings for SET QUOTED_IDENTIFIER and SET ANSI_NULLS are ignored when the stored procedure is running.
因此，所有客户端会话的SETQUOTED_IDENTIFIER和SETANSI_NULLS设置在执行存储过程时都将被忽略。
Trailing blanks are ignored for character columns and trailing nulls are ignored for binary columns.
字符列的尾随空格和二进制列的尾随零都将被忽略。
You can use the AllowsNull property reported by the COLUMNPROPERTY function to determine whether a view column allows nulls.
可以使用COLUMNPROPERTY函数报告的AllowsNull属性来确定视图列是否允许使用空值。
If one record set has more rows than the other, data in that column will continue while nulls will be displayed for the other as seen below.
如果一个记录集比另一个多，此列中的数据将会继续增加，而另一个显示null，如下所示。
Learn some fun techneques to get interesting animation by playing with the pivot points of layers and nulls objects. . .
了解一些乐趣techneques获得通过与枢纽层空物体积分的比赛有趣的动画…
SQL uses a small integer which contains a zero if the column is not null or -1 if the column contains nulls.
如果列不包含空值，则SQL使用一个包含一个0的小整数；反之则包含-1。
If a view column does not allow nulls, an INSERT statement must provide values for the column.
如果视图列不允许使用空值，则INSERT语句必须为该列提供值。
The CWF fields must be padded with SPACES (not NULLS).
CWF字段必须带空格（而不是NULL）。
SET ANSI_NULLS ON affects a comparison only if one of the operands of the comparison is either a variable that is NULL or a literal NULL.
仅当某个比较操作数是值为NULL的变量或文字NULL时，SETANSI_NULLSON才会影响比较。
When SET ANSI_NULLS is OFF, comparisons of all data against a null value evaluate to TRUE if the data value is NULL.
当SETANSI_NULLS为OFF时，如果数据值为NULL，则所有数据对空值的比较将取值为TRUE。
NULL By default, domains allow NULLs unless the allow_nulls_by_default option is set to OFF.
NULL缺省情况下，域允许NULL，除非allow_nulls_by_default选项设置为OFF。
UTF-8 files only contain nulls that are really meant to be null.
UTF-8文件仅在确实表示null的地方包含null。
While a normal index can be used, it wastes a lot of space for nulls you are probably not going to query against.
如果使用普通索引的话，即使你并不打算对它进行查询，它也会因为null值浪费大量的空间。
For each of the columns, be sure to select the right data type and to uncheck the Allow Nulls options.
对每个列，要确保选择了正确的数据类型，并取消“允许为空”复选框。
