{ //此处为age=26 "$eq" : 26 } }, "winningPlan" : { //最佳的执行计划 "stage" : "COLLSCAN", //COLLSCAN为集合扫描 "filter" : { //过滤条件 "age" : { "$eq" : 26 } }, "direction" : "forward" //方向:forward }, "rejectedPlans" : [ ] //拒绝的执行计划,此处没有 }, "...
Li An Kwan is having issues with: so if instructor is going to introduce something like chomp he should at least give a little short background. in addition, he's chaining the m...