db={"provider_tenants":[{"provider_id":"63579dd4539180517fd51d71","tenants":[{"_id":"6364da3dc6cded87a8d74086","tenant_id":"636485fa84eedd81331c60e6"}],"_id":"6364da3dc6cded87a8d74085"},{"provider_id":"6364871d84eedd81331c60eb","tenants":[{"_id":"636b77aca99eaad39c86bd71","tenant_id":"6364872d84eedd81331c60ec",}],"_id":"636b7765a99eaad39c86bd6f"}],"details_provider":[{"_id":"63579dd4539180517fd51d71","name":"details_aaaaaa","tenants":[{"name":"xxxxx","_id":"636485fa84eedd81331c60e6"},{"name":"zzzzz","_id":"6364860684eedd81331c60e7"}]},{"_id":"6364871d84eedd81331c60eb","name":"details_bbbbbb","tenants":[{"name":"yyyyy","_id":"6364872d84eedd81331c60ec"}]}]}

db.provider_tenants.aggregate([{$lookup:{from:"details_provider",localField:"provider_id",foreignField:"_id",as:"details"}},{$set:{name:{$first:"$details.name"},details:"$$REMOVE"}}])