string(221) " `maxwage`>=15000 AND `nature`=2 AND (`education`=4 OR `education`=0) AND (`experience`=1 OR `experience`=0) AND `category` in (2001,2000,2002,2003,2004,2005,2006,2007,2008,2009,2010,2011,2012,2013,2014) AND category1=514"