...性划分 连接结果索引[gap=1135]Key words: join algorithm; tertiary storage system; attribute separation; join result index...
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The result set from FETCH (3) is ordered by the ID column and joined using a merge join with index I1 for T1 to get final result set.
FETCH(3)的结果集是根据ID字段排序的，并且使用T1的索引I1的合并联接而得到最终的结果集。
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