How to specify multiple nested documents in mongoimport? - arrays

Question

I have the following CSV:
matchId, score, players.Name, players.Goals
2730319610399, 5-0, John, 3
When I use mongoimport on Studio 3T it is imported in the form I need because of the dot notation:
{
"matchId" : "2730319610399",
"score" : "5-0",
"players" : {
"Name" : "John",
"Goals" : "3"
}
}
My issue is that the csv actually has one more player that I want to add in this import. The array of "players" has two entries.
This is the actual CSV format:
matchId, score, players.Name, players.Goals, players.Name, players.Goals
2730319610399, 5-0, John, 3, Kyle, 2
But this does not work and I get an error of:
Every row will be parsed as one column.
The header contains a duplicate name "players.Name" in columns: [3, 5]
Is it possible to format the CSV so that I can add multiple values into the "players" array? I was thinking of naming it something like players[0].Name and players[1].Name
But that doesn't work because it creates two arrays: players[0] and players[1]
This is what I need the database structure to look like:
{
"matchId" : "2730319610399",
"score" : "5-0",
"players" : {
"Name" : "John",
"Goals" : "3"
},
{
"Name" : "Kyle",
"Goals" : "2"
}
}

Answer 1

Try with this:
matchId, score, players.Name, players.Goals
2730319610399, 5-0, John.Kyle, 3.2
then, use:
db.collection.find().snapshot().forEach(function (test) {
test.players.Name = test.players.Name.split('.');
db.whatevercollection.save(test);
});
db.collection.find().snapshot().forEach(function (test) {
test.players.Goals = test.players.Goals.split('.');
db.whatevercollection.save(test);
});

Answer 2

ok, so the best option would be to import a json file instead of a csv.
For example:
{ "matchId":"2730319610399","score":"5-0","players":[{"Name":"John","Goals":"3"},{"Name":"Kyle","Goals":"2"}]}
{ "matchId":"2830319610399","score":"1-0","players":[{"Name":"Mauri","Goals":"1"}]}
then use mongoimport as follows:
mongoimport --db=TestDB --collection=TestCol --type=json example_file.json
you should see something like this on Robo3T: