In the case where a retrieved column has a value of SQL NULL, then no XPath variable reference expression is assigned to such a value.
如果检索到的列值为SQL NULL，那么不会给此类值分配任何XPath变量引用表达式。
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。
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。
Prior to the DB2 for I 6.1 release, SQL Update and Insert statements could use an indicator variable with a value of -1 to set a null capable column to the null value.
在DB 2fori 6.1发布之前，SQLUpdate和insert语句能够使用一个值为- 1的指示符变量，将支持空值的列设置为空值。
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RPG handle_update子过程设置。
The SQL query USES the stored procedures to create one XML listing element per row of data returned, passing in null as the column to obtain its value from because its value is its subelements.
SQL查询使用存储过程为每行返回数据创建一个xml列表元素，同时传递null作为列以获取值，因为它的值就是它的子元素。
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。
If a standard SQL server login does not exist on the new SQL server server, you can add the login with a NULL password.
如果新的SQLServer服务器上不存在标准的SQL Server登录，则会添加密码为空的登录。
You can have SSMA automatically convert out-of-range date values with NULL or the nearest date SQL Server can support.
你可以有址自动转换与空值或SQL服务器可以支持的最近日期范围的日期值。
DB2 SQL - How can I display nothing instead of a hyphen when the result of my case statement is NULL?
DB 2SQL-我怎么能代替连字号当我的case语句的结果是空的没有显示？
DB2 SQL - How can I display nothing instead of a hyphen when the result of my case statement is NULL?
DB 2SQL-我怎么能代替连字号当我的case语句的结果是空的没有显示？
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