May I ask mongodb how to query duplicate data?

Boss database has a user table with an IP field in it. How can I find out all the data with duplicate IP in this table?

Golang python java php mongodb

Mar.12,2021

can be implemented using aggregate .
for example:

   has been solved. Thank you ~


										
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						MySQL Query :  SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5 
 MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b3b0df-2c28f.MAI); waiting for someone to free some space... (errno: 28 "No space left on device") 
 MySQL Errno : 1021 
 Message :  Disk full (/tmp/#sql-temptable-64f5-1b3b0df-2c28f.MAI); waiting for someone to free some space... (errno: 28 "No space left on device") 
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