下表有4X7个单元格，由邻接的多个单元格可拼成矩形块。该表中共有（4)个四角上都为1的矩形块。 

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SQL Error: select id,body,options from ***_enewstiku where sourceid='29740' and id < 2415522 and id<>'2415522' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29740' and id > 2415522 and id<>'2415522' order by id asc limit 5