null statement
英 [nʌl ˈsteɪtmənt]
美 [nʌl ˈsteɪtmənt]
空语句
双语例句
- But in DB2, you must provide a value for NOT NULL columns in an INSERT statement when a default hasn't been defined.
但在DB2中，如果未定义该值，则必须在INSERT语句中为NOTNULL列提供值。 - In MySQL, if you try to execute an INSERT statement that does not provide a value for a NOT NULL column, the command is successful.
在MySQL中，如果要执行一个不提供NOTNULL列值的INSERT语句，此命令没有问题。 - Note that when using OLAP data sources, you will not be able to use null in the else statement, and will need to use a static value.
注意，在使用OLAP数据源时，不能在else语句中使用null，需要使用一个静态值。 - Note that the test for null values is gone from the FOR statement, because you want to handle that condition by writing a diagnostic record.
注意，对null值的检查从FOR语句中消失了，因为希望通过写诊断记录来处理这种情况。 - If the condition evaluates to FALSE or NULL, the loop is bypassed, and control passes to the next statement.
如果条件的求值结果为FALSE或NULL，那么将绕过循环，并且控制被传递给下一条语句。 - The null indicator values are set by the RPG HANDLE_UPDATE sub-procedure prior to executing the SQL UPDATE statement.
空指示符值在执行SQLUPDATE语句之前通过RPGHANDLEUPDATE子过程设置。 - So in the example above, the NOT NULL constraint would get violated, and the INSERT statement would error out.
因此，在上面的示例中，会违反NOTNULL约束，INSERT语句会出错。 - The null indicator values are populated during the execution of the SQL FETCH statement.
空指示符值在SQLFETCH语句执行过程中填充。 - Also, the IF statement has been inverted: you now test for null coordinates ( instead of NOT NULL)), write a log record if found, and proceed with the insert otherwise.
另外，IF语句已经反转了，现在检查null坐标（而不是NOTNULL），如果找到了，就写日志记录，否则就继续处理插入。 - The report author replies back with the statement that only null suppression is required on both columns and rows.
报表创建者回复说，在行和列上都仅需要nullsuppression。 - Enter a comment to negate the if ( largestCityPopulationSB== null) statement by adding two forward-slash marks://.
通过添加两个斜杠标记，输入注释取消（largestCityPopulationSB==null）判断语句：//。 - If the local column's null property is not identical to the remote column's null property, a warning message is issued, but the statement is not aborted.
如果本地列的null属性与远程列的null属性不同，则会发出警告信息，但语句不中止。