Therefore flow developers should not use routing decisions in which variable reference expressions map onto name columns whose values may be NULL.
因此,流开发人员不应该使用变量引用表达式映射到名称列可能为 NULL 的路由决策。
If you omit a table name (that is, you specify NULL or an empty string), information is returned for all tables in the schema specified.
如果您省略了表名(即指定NULL或空字符串),那么为指定的模式中的所有表返回信息。
If the schema is NULL or the empty string, the procedure restores the schema to the name from where it was backed up.
如果模式是NULL或空字符串,那么这个过程采用备份时的模式名进行恢复。
The last set includes a colon (:) between the variable name and the substitution operator, which adds the check to see if the variable is NULL, as well.
后一组定义在变量名和替换操作符之间包含一个冒号(:),这会额外检查变量是否是NULL。
The procedure does not perform any action if the given table name is NULL.
如果给出的表名为NULL,则该过程不执行任何动作。
A macro is called to check if the entry name syntax and the entry name is passed as NULL.
调用一个宏检查传递的条目名称语法和条目名称是否为NULL。
Exclude columns: the name of the columns that you want to be excluded can be null.
排除列:您希望被排除的列名称可以为空。
NOT NULL - a NULL was found in field name.
NOTNULL——字段名中出现空值。
Otherwise, the shell interprets the trailing text as part of your variable name — and most likely returns a null value.
否则,Shell将把尾随文本解释为变量名称的一部分——并且很可能返回一个空值。
If a row is returned from the database, the UserBean is populated with non-null user name and password member variables.
如果从数据库返回了一行,则使用非空的用户名和密码成员变量来填充userbean。
Finally, the team needed to assemble everything into a table and update the events table with the depot location name or null. The full SQL is.
最后,该团队需要将每项数据组装到一个表中,使用维修站位置、名称或null更新事件表。
Domain names are the first part of the MBean identifier — the comma-delimited list of name/value pairs fully qualifies the name. Calling server.queryNames(null
域名是MBean标识符的第一部分 —用逗号分隔的名 /值对列表完全限定名称。
The first parameter to session.getDatabase is the name of a server where null means the local system.
getDatabase 的第一个参数是服务器名称,其中null意味着是本地系统。
If name does not correspond to a key in the hashtable, then null will simply be returned.
如果哈希表中没有与键值对应的名称,将返回null。
packageName: The name of the package that will contain the EGL build file.(if this is null or an empty string, the default package will be used)
将包含这个EGL构建文件的包的名称(如果是null或者空的字符串,将使用默认的包)
sourceFolderName: The name of the EGL source folder (If this is null, EGLSource will be used)
EGL资源文件夹的名称(如果是null,将使用EGLSource )
SourceFolderName: the name of the EGL source folder (if this is null EGLSource will be used).
EGL资源文件夹的名称(如果这null,将使用EGLSource)。
"Name" : "name", "type" : [" string ", "null"].
{“name ”: “ name ”,“type ”: [“string ”,“null ”]}。
For each document in the database that has name and amount fields with non-null values, a result row is created in the view.
对于数据库中包含具有非空值的名称和金额字段的每个文档来说,将在视图中创建一个结果行。
This structure contains the resource manager's name, non-null pointers to the resource manager's entry points, a flag, and version number.
此结构包含资源管理器的名称、指向资源管理器入口点的非空指针、标志和版本号。
If the resolved context variable content is null, no replacement occurs and the variable name remains unchanged in the query string (including the "%" signs).
如果解析后的上下文变量内容为空,则不会发生替换,并且变量名称在查询字符串中保持不变(包括“%”符号)。
The "name" column will be a CHAR (30), set to NOT NULL, and have a unique index on it.
“name”列的类型是CHAR(30),不允许为空,而且根据此列建立了一个索引。
We could add validation code to the register method to determine whether the first-name field is blank or null.
我们可以在register方法中添加验证代码,以确定名字字段是否为null。
This tag determines whether or not the field in the name attribute is null.
这个标签确定name属性中的字段是否为空。
In this example, if the Map on line 1 does not contain the person named "Bob," a null pointer exception will result on line 5 when the person is asked for his name.
在这个例子中,如果第1行的Map不包括一个名为“bob”的人,那么在第5行询问person的名字时就会出现null指针异常。
Initialize, it can choose Null, the appointed name or the appointed class.
初始化,可以选择空、指定名称或指定的类。
The instance name is not valid. The instance name cannot be null.
实例名称无效。实例名称不能为空。
The vendor ID and vendor name columns are both required, and are, therefore, specified as NOT NULL.
卖主的序号和名称列都是需要的,所以要指定他们是非空的列。
As with any preprocessor variable ( Section 2.9.2, p. 71) we should not use the name NULL for our own variables.
正如其他的预处理器变量一样(第2.9.2 节),不可以使用NULL这个标识符给自定义的变量命名。
If you can not find, the name appears as NULL.
若查找不到,则姓名显示为NULL。
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