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Anil  Bist / Professional / DataBase

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How to write a query to get all departments where average age of employees making less than or $70000 is greather than or equal to 35?

In order to that we need to write a query to match employees that have a salary that is less than or equal to $70000. Then add the aggregate stage to group the employees by the department. Then add an accumulator with a field named e.g. average_age to find the average age per department using the $avg accumulator and below the existing $match and $group aggregates add another $match aggregate so that we're only retrieving results with an average_age that is greather than or equal to 35.


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Anil  Bist

Skills    Mongodb

Qualifications :- High School - SLV, College/University - Graphic Era Deemed Univ University,
Location :-Dehradun,Dehradun,Uttarakhand,India

in 2006, i Join a web development company in Bangalore and start work on "Ruby on Rail" this is my first web development framework and we worked in this framework and develop four to five project after some time , I moved to JEE/Sturst frame work,

After some time i decided that now times come and I have to go on in my own way and I started a company name is "Soarlogic&q


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