衡量算法好坏的主要指标有（ ）

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69493' and id < 4501570 and id<>'4501570' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69493' and id > 4501570 and id<>'4501570' order by id asc limit 5