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- What is the difference between if and cond? - Stack Overflow
As of #2240 (merged 2 Mar 2022), if and cond are somewhat different from what they used to be, and are better distinguished from each other if requires exactly three arguments: (if condition-form then-form else-form) cond takes any even number of arguments and doesn't require brackets or provide implicit do s: (cond condition1 then1 condition2
- mongoose aggregate using $exists in $cond - Stack Overflow
I want to $project if a field exists, but not it's value, using mongoose model aggregate query If it was possible using $exists in $cond, it would have looked
- How to group query with multiple $cond? - Stack Overflow
I want to query like below, but this contains only one $cond How to query with two $cond?
- Use of $COND and $EQ with a array of objects - Stack Overflow
I'm hoping that someone might be able to answer whether what I'm trying to accomplish below can be done with the MongoDB Aggregation Framework I have a user data structure that resembles the foll
- Conditional grouping with $exists inside $cond - Stack Overflow
1 I found your questions while looking for a similar problem, but insted of a key, I was looking for my parameters I finally solved the issue This is what I used for my parameter, to check that if it exists inside the cond
- How to use $in or $nin in mongo aggregation $group $cond
How to use $in or $nin in mongo aggregation $group $cond Asked 10 years ago Modified 10 years ago Viewed 21k times
- MongoDB conditional if else if with exists - Stack Overflow
if user id exists then user id else if user name exists then user name else if user email exists then user email else '' Here, is my code
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