nulls的例句大全

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。

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。

A channel model based on multi-path propagation is introduced, and the influence of spectral nulls to OFDM system caused by multi-path propagation is analyzed.

根据多径效应对电力线信道模型的影响，介绍了一种基于多径衰落的信道模型，并分析了多径传播造成的频谱零点对OFDM系统性能的影响。

The options include whether to check constraints, enable identity inserts, keep nulls, fire triggers, or lock the table.

选项包括是否检查约束、启用标识插入、保留空值、激发触发器或锁定表。

After the narrow nulls steering, two methods for broad nulls steering are considered, grounded on the theory of derivative constraints.

在已有的窄零陷形成基础上，又基于导数约束思想提出了两种宽零陷的综合方法。

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。

Finally, if you lack email addresses for some Gold customers, you may want to write a query to exclude nulls from the result set.

最后，如果有些Gold客户没有email地址，那么可能要编写一个查询从结果集中排除null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。

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null suppression可由实际查询上的Null suppression替换。

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。

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.

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.

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.

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.

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.

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.

The selected column data type cannot allow nulls.

所选列的数据类型不允许其值为空.

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.

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

物理数据类型'' %1!''不允许为空.

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.