product_info 内容预览 product_id,district_id1,district_id2,district_id3,district_id4,lat,lon,railway,airport,citycenter,railway2,airport2,citycenter2,eval,eval2,eval3,eval4,voters,startdate,upgradedate,cooperatedate,maxstock 1,10201,20502,31003,45760,3.9949275970458986,11.634629821777343,-1.0,-1.0,-1.0,-1.0,-1.0,-1.0,3.0,5,2.0,3.1,1034.0,2005-11-01,2015-01-01,2013-07-02,75.0 2,10201,20502,31003,45760,3.995148468017578,11.636257934570313,-1.0,-1.0,2.3,-1.0,-1.0,-1.0,3.0,4,2.0,3.4,1707.0,2005-02-28,2011-01-01,2014-12-16,172.0