我对使用MongoDb并不陌生,并且陷入了此查询中, 我想检索所有具有较小尺寸的行
{
"_id":ObjectId("562e7c594c12942f08fe4192"),"sizes":["small","medium","large"]
},{
"_id":ObjectId("562e7c594c22942f08fe4193"),"sizes":["small"]
},{
"_id":ObjectId("562e7c594c12942f08fe4199"),"sizes":["medium",
我希望所有较小的行都可用,即
{
"_id":ObjectId("562e7c594c12942f08fe4192"),