组合开关的选用，有以下原则（）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='27223' and id < 2260123 and id<>'2260123' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='27223' and id > 2260123 and id<>'2260123' order by id asc limit 5