MongoDB Convert Array of Objects to Single Object
2
Using a MongoDB aggregate query, how do I convert an array of documents to a single document. The array can have N number of documents.
Before
"loop" : [
{
"field1" : "1"
},
{
"field2" : "2",
"field3" : "3",
},
{
"field4" : "4",
},
{
"field5" : "5",
"field6" : "6"
}
]
After
"loop" : {
"field1" : "1",
"field2" : "2",
"field3" : "3",
"field4" : "4",
"field5" : "5",
"field6" : "6"
}
mongodb aggregation-framework
asked Jan 19 at 2:33
Aydus-MatthewAydus-Matthew
1,25811933
add a comment |
2
Using a MongoDB aggregate query, how do I convert an array of documents to a single document. The array can have N number of documents.
Before
"loop" : [
{
"field1" : "1"
},
{
"field2" : "2",
"field3" : "3",
},
{
"field4" : "4",
},
{
"field5" : "5",
"field6" : "6"
}
]
After
"loop" : {
"field1" : "1",
"field2" : "2",
"field3" : "3",
"field4" : "4",
"field5" : "5",
"field6" : "6"
}
mongodb aggregation-framework
asked Jan 19 at 2:33
Aydus-MatthewAydus-Matthew
1,25811933
add a comment |
2
2
2
1
Using a MongoDB aggregate query, how do I convert an array of documents to a single document. The array can have N number of documents.
Before
"loop" : [
{
"field1" : "1"
},
{
"field2" : "2",
"field3" : "3",
},
{
"field4" : "4",
},
{
"field5" : "5",
"field6" : "6"
}
]
After
"loop" : {
"field1" : "1",
"field2" : "2",
"field3" : "3",
"field4" : "4",
"field5" : "5",
"field6" : "6"
}
mongodb aggregation-framework
asked Jan 19 at 2:33
Aydus-MatthewAydus-Matthew
1,25811933
Using a MongoDB aggregate query, how do I convert an array of documents to a single document. The array can have N number of documents.
Before
"loop" : [
{
"field1" : "1"
},
{
"field2" : "2",
"field3" : "3",
},
{
"field4" : "4",
},
{
"field5" : "5",
"field6" : "6"
}
]
After
"loop" : {
"field1" : "1",
"field2" : "2",
"field3" : "3",
"field4" : "4",
"field5" : "5",
"field6" : "6"
}
mongodb aggregation-framework
mongodb aggregation-framework
asked Jan 19 at 2:33
Aydus-MatthewAydus-Matthew
1,25811933
asked Jan 19 at 2:33
Aydus-MatthewAydus-Matthew
1,25811933
edited Jan 19 at 16:13
Aydus-Matthew
asked Jan 19 at 2:33
Aydus-MatthewAydus-Matthew
1,25811933
asked Jan 19 at 2:33
Aydus-MatthewAydus-Matthew
1,25811933
asked Jan 19 at 2:33
Aydus-MatthewAydus-Matthew
1,25811933
1,25811933
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
2
You can use below aggregation in 3.6 and above.
db.colname.aggregate(
[{"$project":{
"loop":{
"$reduce":{
"input":"$loop",
"initialValue":{},
"in":{"$mergeObjects":["$$value","$$this"]
}
}
}
}}]
)
answered Jan 19 at 3:33
VeeramVeeram
39.8k33458
add a comment |
1
Based on Veeram's answer above using $mergeObjects, here's a more concise query using $project.
Query
db.loop.aggregate(
[{
"$project": {
"loop": { $mergeObjects: "$loop" }
}
}]
)
Result
{
"loop" : {
"field1" : "1",
"field2" : "2",
"field3" : "3",
"field4" : "4",
"field5" : "5",
"field6" : "6"
}
}
answered Jan 19 at 16:23
Aydus-MatthewAydus-Matthew
1,25811933
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
2
You can use below aggregation in 3.6 and above.
db.colname.aggregate(
[{"$project":{
"loop":{
"$reduce":{
"input":"$loop",
"initialValue":{},
"in":{"$mergeObjects":["$$value","$$this"]
}
}
}
}}]
)
answered Jan 19 at 3:33
VeeramVeeram
39.8k33458
add a comment |
2
You can use below aggregation in 3.6 and above.
db.colname.aggregate(
[{"$project":{
"loop":{
"$reduce":{
"input":"$loop",
"initialValue":{},
"in":{"$mergeObjects":["$$value","$$this"]
}
}
}
}}]
)
answered Jan 19 at 3:33
VeeramVeeram
39.8k33458
add a comment |
2
2
2
You can use below aggregation in 3.6 and above.
db.colname.aggregate(
[{"$project":{
"loop":{
"$reduce":{
"input":"$loop",
"initialValue":{},
"in":{"$mergeObjects":["$$value","$$this"]
}
}
}
}}]
)
answered Jan 19 at 3:33
VeeramVeeram
39.8k33458
You can use below aggregation in 3.6 and above.
db.colname.aggregate(
[{"$project":{
"loop":{
"$reduce":{
"input":"$loop",
"initialValue":{},
"in":{"$mergeObjects":["$$value","$$this"]
}
}
}
}}]
)
answered Jan 19 at 3:33
VeeramVeeram
39.8k33458
answered Jan 19 at 3:33
VeeramVeeram
39.8k33458
answered Jan 19 at 3:33
VeeramVeeram
39.8k33458
answered Jan 19 at 3:33
VeeramVeeram
39.8k33458
39.8k33458
add a comment |
add a comment |
1
Based on Veeram's answer above using $mergeObjects, here's a more concise query using $project.
Query
db.loop.aggregate(
[{
"$project": {
"loop": { $mergeObjects: "$loop" }
}
}]
)
Result
{
"loop" : {
"field1" : "1",
"field2" : "2",
"field3" : "3",
"field4" : "4",
"field5" : "5",
"field6" : "6"
}
}
answered Jan 19 at 16:23
Aydus-MatthewAydus-Matthew
1,25811933
add a comment |
1
Based on Veeram's answer above using $mergeObjects, here's a more concise query using $project.
Query
db.loop.aggregate(
[{
"$project": {
"loop": { $mergeObjects: "$loop" }
}
}]
)
Result
{
"loop" : {
"field1" : "1",
"field2" : "2",
"field3" : "3",
"field4" : "4",
"field5" : "5",
"field6" : "6"
}
}
answered Jan 19 at 16:23
Aydus-MatthewAydus-Matthew
1,25811933
add a comment |
1
1
1
Based on Veeram's answer above using $mergeObjects, here's a more concise query using $project.
Query
db.loop.aggregate(
[{
"$project": {
"loop": { $mergeObjects: "$loop" }
}
}]
)
Result
{
"loop" : {
"field1" : "1",
"field2" : "2",
"field3" : "3",
"field4" : "4",
"field5" : "5",
"field6" : "6"
}
}
answered Jan 19 at 16:23
Aydus-MatthewAydus-Matthew
1,25811933
Based on Veeram's answer above using $mergeObjects, here's a more concise query using $project.
Query
db.loop.aggregate(
[{
"$project": {
"loop": { $mergeObjects: "$loop" }
}
}]
)
Result
{
"loop" : {
"field1" : "1",
"field2" : "2",
"field3" : "3",
"field4" : "4",
"field5" : "5",
"field6" : "6"
}
}
answered Jan 19 at 16:23
Aydus-MatthewAydus-Matthew
1,25811933
answered Jan 19 at 16:23
Aydus-MatthewAydus-Matthew
1,25811933
answered Jan 19 at 16:23
Aydus-MatthewAydus-Matthew
1,25811933
answered Jan 19 at 16:23
Aydus-MatthewAydus-Matthew
1,25811933
1,25811933
add a comment |
add a comment |
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