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Queued Indexed Access Method?
排队索引存取法QLAM ？
youdao
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It will choose indexed access if it has lower cost than table scan.
如果使用索引的开销比表扫描的开销低，优化器将选择索引访问。
youdao
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It will choose indexed access if it has lower cost than table scan.
如果使用索引的开销比表扫描的开销低，优化器将选择索引访问。
youdao