[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fRvaFIP7KrPy4HdDRiH2vIptWaZTcLxw3OKtjRRBnOhc":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":8,"question":15,"related":16,"source":27,"type":75},[],"2024-10-15 23:05:27",161851089,[],{"count":9,"courseId":10,"courseImg":11,"courseName":12,"workId":13,"workName":14},16,"18c043233181654bcd2cc473361bb119","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Faeb25db502ee8d57f11664b49dc995c0.png","空间数据处理与应用","work_37522737","","属性过滤条件,就是通过一个或多个__的值来限定要素,即需要一个__,类似SQL语句中的where子句,将比较结果为真的要素返回",[17,29,38,47,54,62,70,76,79,84],{"answer":18,"createTime":19,"id":20,"options":21,"question":26,"source":27,"type":28},[],"2024-10-15 23:00:11",161849747,[22,23,24,25],"'Sea%le' LIKE 'Seattle'","'Seattle%' LIKE 'North Seattle'","'Sea_le' LIKE 'Seattle'","'_eattle' LIKE 'Seattle WA'","以下命令返回为真的选项为( )","v1",1,{"answer":30,"createTime":19,"id":31,"options":32,"question":37,"source":27,"type":28},[],161849748,[33,34,35,36],"OR NOT (a < c)","NOT a < c","AND (a < c)","OR (a > c)","假设a<b<c,以下命令返回值为非真的选项为()",{"answer":39,"createTime":19,"id":40,"options":41,"question":46,"source":27,"type":28},[],161849749,[42,43,44,45],"lyr = ogr.Open(fn, 0).GetLayer(0)feat = lyr.GetNextFeature()","feat = ogr.Open(fn, 0).GetLayer(0).GetNextFeature()","以上答案均正确","ds = ogr.Open(fn, 0)lyr = ds.GetLayer(0)feat = lyr.GetNextFeature()","以下命令书写错误的选项为( )",{"answer":48,"createTime":19,"id":49,"options":50,"question":46,"source":27,"type":28},[],161849750,[51,52,53,44],"lyr.SetSpatialFilter(None)","lyr.SetAttributeFilter(None)","lyr.SetSpatialFilterRect(None)",{"answer":55,"createTime":19,"id":56,"options":57,"question":46,"source":27,"type":28},[],161849751,[58,59,60,61],"lyr.GetFeature(2).GetField('name')","lyr.SetAttributeFilter('continent = "South America"')","lyr.GetFeature(2).GetField(name)","lyr.SetAttributeFilter("continent = 'South America'")",{"answer":63,"createTime":5,"id":64,"options":65,"question":37,"source":27,"type":69},[],161851087,[66,34,67,68],"(a < b) OR NOT (a < c)","(a < b) AND (a < c)","(a < b) OR (a > c)",0,{"answer":71,"createTime":5,"id":72,"options":73,"question":74,"source":27,"type":75},[],161851088,[],"标准的比较运算符有:=、!=、__、>、<__和__",2,{"answer":77,"createTime":5,"id":6,"options":78,"question":15,"source":27,"type":75},[],[],{"answer":80,"createTime":5,"id":81,"options":82,"question":83,"source":27,"type":75},[],161851090,[],"使用SQL语句时,如果涉及到两个图层,可以通过__命令,即通过一个公共的属性值,将这两个图层的属性表连接在一起,其中,__命令表示保留记录表中位于公共属性字段左边的属性字段.__命令用于找到两个属性之间匹配的记录",{"answer":85,"createTime":5,"id":86,"options":87,"question":88,"source":27,"type":75},[],161851091,[],"ExecuteSQL函数的__参数表示SQL语句采用的是何种标准的字符串,默认使用__标准,当使用SQLite标准时,不返回__,如果需要,可以通过__命令,将其添加进来"]