default t result set 默认结果集
For roles with mandatory staff assignment, the default for an empty result set additionally applies.
对于具有强制人员分配的角色，将另外应用空结果集的缺省值。
When this is not assigned to a variable or no further functions are performed, it will by default print a sample result set to the screen.
如果没有分配一个变量或没有执行其他函数，它将在屏幕上默认打印一个样例结果集。
When the federated procedure is created, the data types of the remote procedure parameters and the columns of the result set are mapped to the DB2 data types using the default forward type mapping.
在创建联邦过程时，使用默认的转发类型映射将远程过程参数和结果集的列的数据类型映射为 DB2 数据类型。
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