图 2 中显示了相应表中的示例数据。
Sample data of the corresponding table is shown in Figure 2.
指定即使某些行与相应表中的行不匹配，联接表也应包含这些行。
Specify that joined tables should include rows even when they do not match rows in the corresponding table.
索引也是一种DB 2对象(一个单独的VSAM数据集)，它由一组排好序的键组成，这些键是从相应表中的一个列或多个列抽取出来的。
An index is a DB2 object (a separate VSAM dataset) that is comprised of an ordered set of keys extracted from one or more columns of the corresponding table.
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