mongo DB aggregtion with $cond returning value from field The Next CEO of Stack OverflowUpdate MongoDB field using value of another fieldHow do I drop a MongoDB database from the command line?How to list all collections in the mongo shell?Conditionally evaluate an array element to return$project a new field as the minimum of two fields in mongodbDoes mongodb have a product equivalent of the aggregate $sumFind nested values in mongo 3 with javaMongoDB aggregation pipeline : using $cond to return a $match stage?Need to return cursor and not command_cursor with aggregate()MongoDB: use array returned from aggregation pipeline for $in query in the next stage
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mongo DB aggregtion with $cond returning value from field
The Next CEO of Stack OverflowUpdate MongoDB field using value of another fieldHow do I drop a MongoDB database from the command line?How to list all collections in the mongo shell?Conditionally evaluate an array element to return$project a new field as the minimum of two fields in mongodbDoes mongodb have a product equivalent of the aggregate $sumFind nested values in mongo 3 with javaMongoDB aggregation pipeline : using $cond to return a $match stage?Need to return cursor and not command_cursor with aggregate()MongoDB: use array returned from aggregation pipeline for $in query in the next stage
I am trying to have an aggregation that returns a field (in a document) if two conditions are met,
I am doing it at $project stage and tried to write it as follows :
"conversionName" : "$cond" : [ "$and" : [ "$eq" : [ "$webpage", "Product" ] , "$eq" : [ "$isConverted", true ] ] , "$conversion.name", 0 ]
so if webpage is Product and isConverted is true then it shows the value of the conversion.name at this document.
The current aggregation fails due to : "The $cond accumulator is a unary operator' on server main-shard-00-00-mhxad.gcp.mongodb.net:27017. "
The other parts of the aggregations work perfectly fine.
In what way can I return a value with a $cond commend? If there is non - what another way may address my needs?
mongodb mongodb-query aggregation-framework
edited Mar 21 at 17:28
Sagar P. Ghagare
5472921
asked Mar 21 at 16:29
Shiri Omer GalShiri Omer Gal
1
add a comment |
I am trying to have an aggregation that returns a field (in a document) if two conditions are met,
I am doing it at $project stage and tried to write it as follows :
"conversionName" : "$cond" : [ "$and" : [ "$eq" : [ "$webpage", "Product" ] , "$eq" : [ "$isConverted", true ] ] , "$conversion.name", 0 ]
so if webpage is Product and isConverted is true then it shows the value of the conversion.name at this document.
The current aggregation fails due to : "The $cond accumulator is a unary operator' on server main-shard-00-00-mhxad.gcp.mongodb.net:27017. "
The other parts of the aggregations work perfectly fine.
In what way can I return a value with a $cond commend? If there is non - what another way may address my needs?
mongodb mongodb-query aggregation-framework
edited Mar 21 at 17:28
Sagar P. Ghagare
5472921
asked Mar 21 at 16:29
Shiri Omer GalShiri Omer Gal
1
add a comment |
I am trying to have an aggregation that returns a field (in a document) if two conditions are met,
I am doing it at $project stage and tried to write it as follows :
"conversionName" : "$cond" : [ "$and" : [ "$eq" : [ "$webpage", "Product" ] , "$eq" : [ "$isConverted", true ] ] , "$conversion.name", 0 ]
so if webpage is Product and isConverted is true then it shows the value of the conversion.name at this document.
The current aggregation fails due to : "The $cond accumulator is a unary operator' on server main-shard-00-00-mhxad.gcp.mongodb.net:27017. "
The other parts of the aggregations work perfectly fine.
In what way can I return a value with a $cond commend? If there is non - what another way may address my needs?
mongodb mongodb-query aggregation-framework
edited Mar 21 at 17:28
Sagar P. Ghagare
5472921
asked Mar 21 at 16:29
Shiri Omer GalShiri Omer Gal
1
I am trying to have an aggregation that returns a field (in a document) if two conditions are met,
I am doing it at $project stage and tried to write it as follows :
"conversionName" : "$cond" : [ "$and" : [ "$eq" : [ "$webpage", "Product" ] , "$eq" : [ "$isConverted", true ] ] , "$conversion.name", 0 ]
so if webpage is Product and isConverted is true then it shows the value of the conversion.name at this document.
The current aggregation fails due to : "The $cond accumulator is a unary operator' on server main-shard-00-00-mhxad.gcp.mongodb.net:27017. "
The other parts of the aggregations work perfectly fine.
In what way can I return a value with a $cond commend? If there is non - what another way may address my needs?
mongodb mongodb-query aggregation-framework
mongodb mongodb-query aggregation-framework
edited Mar 21 at 17:28
Sagar P. Ghagare
5472921
asked Mar 21 at 16:29
Shiri Omer GalShiri Omer Gal
1
edited Mar 21 at 17:28
Sagar P. Ghagare
5472921
asked Mar 21 at 16:29
Shiri Omer GalShiri Omer Gal
1
edited Mar 21 at 17:28
Sagar P. Ghagare
5472921
edited Mar 21 at 17:28
Sagar P. Ghagare
5472921
edited Mar 21 at 17:28
Sagar P. Ghagare
5472921
5472921
asked Mar 21 at 16:29
Shiri Omer GalShiri Omer Gal
1
asked Mar 21 at 16:29
Shiri Omer GalShiri Omer Gal
1
asked Mar 21 at 16:29
Shiri Omer GalShiri Omer Gal
1
1
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
In my project, it works perfectly this way :
$cond:
if:
$and: [
"$eq" : [ "$webpage", "Product" ] ,
"$eq" : [ "$isConverted", true ] ,
],
,
then: "$conversion.name",
else: 0,
,
If it does not work (and I dont' see why it won't) then is an expression and can be an other $cond :
$cond: {
if: "$eq" : [ "$webpage", "Product" ] ,
then: $cond: if: "$eq" : [ "$isConverted", true ] , then: "$conversion.name", else: 0,
else: 0,
,
answered Mar 21 at 22:08
Julien TASSINJulien TASSIN
2,1781722
add a comment |
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1 Answer
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active
oldest
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1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
In my project, it works perfectly this way :
$cond:
if:
$and: [
"$eq" : [ "$webpage", "Product" ] ,
"$eq" : [ "$isConverted", true ] ,
],
,
then: "$conversion.name",
else: 0,
,
If it does not work (and I dont' see why it won't) then is an expression and can be an other $cond :
$cond: {
if: "$eq" : [ "$webpage", "Product" ] ,
then: $cond: if: "$eq" : [ "$isConverted", true ] , then: "$conversion.name", else: 0,
else: 0,
,
answered Mar 21 at 22:08
Julien TASSINJulien TASSIN
2,1781722
add a comment |
In my project, it works perfectly this way :
$cond:
if:
$and: [
"$eq" : [ "$webpage", "Product" ] ,
"$eq" : [ "$isConverted", true ] ,
],
,
then: "$conversion.name",
else: 0,
,
If it does not work (and I dont' see why it won't) then is an expression and can be an other $cond :
$cond: {
if: "$eq" : [ "$webpage", "Product" ] ,
then: $cond: if: "$eq" : [ "$isConverted", true ] , then: "$conversion.name", else: 0,
else: 0,
,
answered Mar 21 at 22:08
Julien TASSINJulien TASSIN
2,1781722
add a comment |
In my project, it works perfectly this way :
$cond:
if:
$and: [
"$eq" : [ "$webpage", "Product" ] ,
"$eq" : [ "$isConverted", true ] ,
],
,
then: "$conversion.name",
else: 0,
,
If it does not work (and I dont' see why it won't) then is an expression and can be an other $cond :
$cond: {
if: "$eq" : [ "$webpage", "Product" ] ,
then: $cond: if: "$eq" : [ "$isConverted", true ] , then: "$conversion.name", else: 0,
else: 0,
,
answered Mar 21 at 22:08
Julien TASSINJulien TASSIN
2,1781722
In my project, it works perfectly this way :
$cond:
if:
$and: [
"$eq" : [ "$webpage", "Product" ] ,
"$eq" : [ "$isConverted", true ] ,
],
,
then: "$conversion.name",
else: 0,
,
If it does not work (and I dont' see why it won't) then is an expression and can be an other $cond :
$cond: {
if: "$eq" : [ "$webpage", "Product" ] ,
then: $cond: if: "$eq" : [ "$isConverted", true ] , then: "$conversion.name", else: 0,
else: 0,
,
answered Mar 21 at 22:08
Julien TASSINJulien TASSIN
2,1781722
answered Mar 21 at 22:08
Julien TASSINJulien TASSIN
2,1781722
answered Mar 21 at 22:08
Julien TASSINJulien TASSIN
2,1781722
answered Mar 21 at 22:08
Julien TASSINJulien TASSIN
2,1781722
2,1781722
add a comment |
add a comment |
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