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idx6

idx6

idx6

idx6

1

Table 2 has one row for each of these three queries , and one column for each of the indexes idx3 through idx6 defined above .

表 2 中每一行用于一个查询，每一列分别用于前面定义的索引 idx3 到 idx6 。

2

Index idx6 is also the only index that matches the predicate in query 6 .

索引 idx6 还是与查询 6 中的谓词相匹配的惟一索引。

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