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I try to take only 2 decimals, but I get an error and I do not know how to solve it.
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“avg”: {$divide:
[ { $trunc: { $avg: { $multiply: ["$imdb.rating", 100] } } },
100 ] } } },
Please follow Forum guidelines in the future and do not post code here. Thanks.
Here’s one way to truncate a result to 1 decimal place
$divide: [{ $trunc: { multiply: ["", 10] } }, 10]
Notice that the Lab question is looking for a 1 decimal answer as shown, not 2
{ "_id": "First Last", "numFilms": 1, "average": 1.1 }
Good luck.
2 Likes
“errmsg” : “$multiply only supports numeric types, not string”,
Hello @Memosha_53183,
just try to replace the empty space in the “multiple” expression to the rating field:wink:
Ummm… yes. That wasn’t intended and is not simply something to cut-and-paste. You need to read and understand the formula, then apply it. Try again. Good luck.
Its working fine now. Just added logic to use multiply correctly