DB 2可以使用关系索引和xml索引来快速检索所关注的数据，避免了盲目地扫描表中的所有行。
DB2 can use both the relational and XML indexes to quickly pinpoint the data of interest, avoiding a costly scan of all rows in the table.
DB 2可以使用关系索引和xml索引来快速检索所关注的数据，避免了盲目地扫描表中的所有行。
DB2 can use both the relational and XML indexes to quickly pinpoint the data of interest, avoiding a costly scan of all rows in the table.
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