... numerical precision 数值精度 numerical predicate 数谓词 numerical range of transformation 变换的数值范围 ...
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与 QUALIFIED_ROWS 相关的数代表将使基础表引用的所有 本地谓词合格的估计的记录数量。
The number associated with QUALIFIED_ROWS represents the estimated number of records that would qualify all the local predicates of the underlying table reference.
正是最后一个应用程序的谓词和最（最后一次）*日志（最后一次）掉期掉期如果有足够的存储器有内存不足或数线性。
Exactly last-first applications of the predicate and at most (last-first)*log(last-first) swaps if there is insufficient memory or linear number of swaps if sufficient memory is available.
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