FoxPro 支持嵌套衔接(nested joins)主要事故 创立连接条件时请记着如次几面:要是在查询中包含两个表又出有指订连接条件那么第1个表中每个记录同第2个表中每忘载之间...
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As previously stated, ordered input is essential to a merge scan join, but it is not required for nested loop joins.
如前所述，按顺序的输入对于合并扫描联接是必不可少的，但其无需嵌套循环联接。
For more information about nested loop joins, refer to the appropriate information center link in the Resources section for your DB2 platform.
要了解嵌套循环联接的更多信息，请参考参考资料部分中针对您的DB 2平台的适当的信息中心链接。
However, the benefit of the merge scan join is that the inner table does not have to be scanned repeatedly as it does for nested loop joins.
然而，合并扫描联接的好处是不必反复地扫描内部表因为其为嵌套循环联接工作。
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