I want to create a mongodb document structure like below.
data:[[{a:b},{b:c}],[{e:f}],[{f:g},{j:h},{i:l}]]
This structure will allow me to add new sub array element, 4th one to the existing data array which contains three sub arrays in the above example, if required.
I am able to add new sub array element using below command from mongodb shell.
db.xyz.update({'id':'A01'},{$push:{data:[]}},{})
However, I am unable to findout solution for pushing data in to respective arrays. The following command is not working.
db.xyz.update({'id':'A01'},{$push:{data[0]:{$push:{a:b}}}},{})