nulls

Likewise, if the NULLS LAST option is used, the last partition must end with MAXVALUE.

同样，如果使用NULLS LAST选项，最后一个分区必须结束于MAXVALUE。

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。

Computer simulation proves that this method has advantages of fast convergence, nulls balance and reliability in array antenna synthesis compared existing algorithms.

计算机仿真结果表明，与现有算法相比，该方法用于天线方向图综合具有收敛速度快、零陷均衡、可靠等优势。

Allow Nulls property cannot be set on a column that is part of the primary key.

不能在作为主键的一部分的列上设置“允许空”属性.

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 rows belonging to the table, indicates whether nulls are allowed in this column.

对于属于此表的行, 指示此列是否允许包含空值.

Expands to show properties for Allow Nulls, Collation, Datatype, Length, Precision Scale, and Size.

展开以显示“允许空” 、 “排序规则” 、 “数据类型” 、 “长度” 、 “精度” 、 “小数位数”和“大小”等属性.

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。

It is important to note that when the NULLS FIRST option is specified, the first partition must start at MINVALUE.

一定要注意，当指定NULLS FIRST选项时，第一个分区必须从MINVALUE开始。

The selected column data type cannot allow nulls.

所选列的数据类型不允许其值为空.

The Relation between Nulls of Smart Antenna Pattern and Character of the Eigenvalues of Constraint Matrix

智能天线方向图零陷与约束矩阵特征值的关系

In particular, the final example of translating new line characters to nulls would not work if some file names already contained new line characters.

尤其是在最后一个例子中，如果一些文件名已经包含新行字符串，那么将新行字符串转换成null字符串将导致错误。

I might want to do more than simply concatenate the values: I might want to check for nulls.

我可能想做很多事情（比如检查一些空值），而不仅仅是串联一些值。

Typed nulls can be created cast over a null literal.

强制转换可以在空文字之上创建类型空值.

RPG uses a1 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。

SQL/ XML is good if you want results returned as sets and missing XML elements represented with nulls.

如果您希望将结果作为集合返回，且将丢失的XML元素表示为空，那么SQL/XML有优势。

Numerical examples show that nulls at any sidelobe positions can be rapidly achieved by MDLS method.

计算实例表明,该方法能够在指定的任意副瓣位置迅速生成深零点.

An identity column or a column used in a primary key , cannot allow nulls.

标识列或主关键字中的列的值不能为空.

Ensure that there are no nulls embedded at the end of the file.

确保文件最后没有嵌入空格。

Storing nulls in sparse columns takes zero space, so your storage requirement goes way down.

空值存储在稀疏栏目需零空间, 使您的存储要求,有云的方式.

Nulls are not matched to any value, including other instances of null.

空值不与任何值匹配, 包括其他实例的空值.

Signal reconstruction of channel spectral nulls in TDS-OFDM systems

TDS-OFDM对信道频谱零点的重建

An Improved Method for Synthesizing Antenna Pattern with Broad Nulls

一种改进的宽零陷天线方向图合成方法

The value for the first key is4 bytes long and it is entirely NULLs.

第一个键的值为4字节且其完全为NULL。

The number of NULLs in the column

列中NULL值的个数

On the Far-Field Pattern with Deep Nulls

远区方向图具有深零位问题的研究

The general requirement for these algorithms is that the container does not contain any nulls.

这些算法的通用要求是，容器不能包含任意空值。

The physical data type '% s' does not allow nulls.

物理数据类型''%1！''不允许为空。

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。

The physical data type'% s'does not allow nulls.

物理数据类型'' %1!''不允许为空.