I am new in mongodb. i have a simple email Schema which implemented like below :
const emailSchema = new Schema({
from:{
type: String
},
to: {
type: String
},
subject: {
type: String
},
content: {
type: String
},
provider:{
type: String
},
success:{
type: Boolean
}
now i want to query all email records and seprate them in two array. one for provider=x
and provider = y
. then count each one's success
field. how can i write such query ?
If you only want to count success: true for any provider
emailSchema.aggregate([{
$match: {
{ 'success': true }
},
$group: {
_id: {
provider: '$provider'
}, //group by provider
count: {
$sum: 1
}
} //sum of success fields
]);
If you only want to count success field exists or not it may be true or false for any provider
emailSchema.aggregate([{
$match: {
{'success': { $exists: true }}
},
$group: {
_id: {
provider: '$provider'
}, //group by provider
count: {
$sum: 1
}
} //sum of success fields
]);
Use aggregate query for group and count
emailSchema.aggregate([{
$group: {
_id: {
provider: '$provider'
}, //group by provider
count: {
$sum: '$success'
}
} //sum of success fields
])
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