Listing 19 lists the plan showing the efficient use (FETCH (8)) of ORDER BY and FETCH FIRST 1 ROW ONLY discussed above.

清单19列出的计划展示了使用前面讨论的ORDER BY的(FETCH(8))和FETCH FIRST 1 ROW ONLY的效率。

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Note: Use this mode only if the application can tolerate false negatives and does not want to add additional storage to each row for a row CHANGE TIMESTAMP column.

注意：只有在应用程序可以容忍漏判，并且不希望向每一行添加针对ROW CHANGE timestamp列的额外存储的情况下，才使用这种模式。

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To do this, use the Browse button (which is labeled only with ellipses, or three dots) in each row of the Value column in the unresolved path map symbol table, and then click Refresh.

要这样做，就使用未辨别的路径图符号表中的 Value 列的每一行中的 Browse 按钮（标记为省略号，或三个点），然后单击 Refresh。

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