on mysql,oracle,sybase, i got never problem with a just simple distinct
i need to check no duplicate uuid field before create index with unique id on very big dataset of 70 millions records
but if i use distinct(“uuid”) i got message exeeed limit of 16MB
i use aggregation with count on uuid and allowDisckUse: true, i got bson data to large error
is it impossible to do a distinct like other database sql ?