首先进行的检査是（  ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='25961' and id < 2177470 and id<>'2177470' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25961' and id > 2177470 and id<>'2177470' order by id asc limit 5