How to aggregate data with condition using two arrays?
0
I have M and W data sets and the structure is as follow:
M = [
'ModuleName': 'GDD',
{Fields: [
{'FieldID': 5, 'Date': '2018-12-01'},
{'FieldID': 6, 'Date': '2018-12-01'}
]
}
]
W = [
{'FieldID': 5, 'Value': 10, 'WDate': 2018-06-05'},
{'FieldID': 5, 'Value': 10, 'WDate': 2018-06-05'},
{'FieldID': 6, 'Value': 50, 'WDate': 2018-07-05'},
{'FieldID': 6, 'Value': 20, 'WDate': 2018-09-05'}
]
I want to calculate value of all fields from W data set and group by FieldID with date condition from M data set.
M.forEach(m => {
if (m.ModuleName === 'GDD') {
m.Fields.forEach(f => {
const sum = W.map(w => w.Value).reduce((acc, value) => acc + value, 0);
});
}
});
Condition: If Date from M.Fields is equal or more than date from W.wDate.
Since the data sets are huge, I also need to consider efficiency.
The expected output is to add another property and store sum of Value in the m.Fields field object.
M = [
'ModuleName': 'GDD',
{Fields: [
{'FieldID': 5, 'Date': '2018-10-01', 'sum': 20},
{'FieldID': 6, 'Date': '2018-10-01', 'sum': 70}
]
}
]
javascript
asked Nov 23 '18 at 17:06
Maihan NijatMaihan Nijat
2,70522347
add a comment |
0
I have M and W data sets and the structure is as follow:
M = [
'ModuleName': 'GDD',
{Fields: [
{'FieldID': 5, 'Date': '2018-12-01'},
{'FieldID': 6, 'Date': '2018-12-01'}
]
}
]
W = [
{'FieldID': 5, 'Value': 10, 'WDate': 2018-06-05'},
{'FieldID': 5, 'Value': 10, 'WDate': 2018-06-05'},
{'FieldID': 6, 'Value': 50, 'WDate': 2018-07-05'},
{'FieldID': 6, 'Value': 20, 'WDate': 2018-09-05'}
]
I want to calculate value of all fields from W data set and group by FieldID with date condition from M data set.
M.forEach(m => {
if (m.ModuleName === 'GDD') {
m.Fields.forEach(f => {
const sum = W.map(w => w.Value).reduce((acc, value) => acc + value, 0);
});
}
});
Condition: If Date from M.Fields is equal or more than date from W.wDate.
Since the data sets are huge, I also need to consider efficiency.
The expected output is to add another property and store sum of Value in the m.Fields field object.
M = [
'ModuleName': 'GDD',
{Fields: [
{'FieldID': 5, 'Date': '2018-10-01', 'sum': 20},
{'FieldID': 6, 'Date': '2018-10-01', 'sum': 70}
]
}
]
javascript
asked Nov 23 '18 at 17:06
Maihan NijatMaihan Nijat
2,70522347
1
Can you pls also tell the expected output
– Nitish Narang
Nov 23 '18 at 17:07
Can you also please include a little more of your data? You've just included 1 object from bothMandW.
– slider
Nov 23 '18 at 17:08
But why do you have 2 similar objects inFields? Won't they have the same sum?
– slider
Nov 23 '18 at 17:16
add a comment |
0
0
0
I have M and W data sets and the structure is as follow:
M = [
'ModuleName': 'GDD',
{Fields: [
{'FieldID': 5, 'Date': '2018-12-01'},
{'FieldID': 6, 'Date': '2018-12-01'}
]
}
]
W = [
{'FieldID': 5, 'Value': 10, 'WDate': 2018-06-05'},
{'FieldID': 5, 'Value': 10, 'WDate': 2018-06-05'},
{'FieldID': 6, 'Value': 50, 'WDate': 2018-07-05'},
{'FieldID': 6, 'Value': 20, 'WDate': 2018-09-05'}
]
I want to calculate value of all fields from W data set and group by FieldID with date condition from M data set.
M.forEach(m => {
if (m.ModuleName === 'GDD') {
m.Fields.forEach(f => {
const sum = W.map(w => w.Value).reduce((acc, value) => acc + value, 0);
});
}
});
Condition: If Date from M.Fields is equal or more than date from W.wDate.
Since the data sets are huge, I also need to consider efficiency.
The expected output is to add another property and store sum of Value in the m.Fields field object.
M = [
'ModuleName': 'GDD',
{Fields: [
{'FieldID': 5, 'Date': '2018-10-01', 'sum': 20},
{'FieldID': 6, 'Date': '2018-10-01', 'sum': 70}
]
}
]
javascript
asked Nov 23 '18 at 17:06
Maihan NijatMaihan Nijat
2,70522347
I have M and W data sets and the structure is as follow:
M = [
'ModuleName': 'GDD',
{Fields: [
{'FieldID': 5, 'Date': '2018-12-01'},
{'FieldID': 6, 'Date': '2018-12-01'}
]
}
]
W = [
{'FieldID': 5, 'Value': 10, 'WDate': 2018-06-05'},
{'FieldID': 5, 'Value': 10, 'WDate': 2018-06-05'},
{'FieldID': 6, 'Value': 50, 'WDate': 2018-07-05'},
{'FieldID': 6, 'Value': 20, 'WDate': 2018-09-05'}
]
I want to calculate value of all fields from W data set and group by FieldID with date condition from M data set.
M.forEach(m => {
if (m.ModuleName === 'GDD') {
m.Fields.forEach(f => {
const sum = W.map(w => w.Value).reduce((acc, value) => acc + value, 0);
});
}
});
Condition: If Date from M.Fields is equal or more than date from W.wDate.
Since the data sets are huge, I also need to consider efficiency.
The expected output is to add another property and store sum of Value in the m.Fields field object.
M = [
'ModuleName': 'GDD',
{Fields: [
{'FieldID': 5, 'Date': '2018-10-01', 'sum': 20},
{'FieldID': 6, 'Date': '2018-10-01', 'sum': 70}
]
}
]
javascript
javascript
asked Nov 23 '18 at 17:06
Maihan NijatMaihan Nijat
2,70522347
asked Nov 23 '18 at 17:06
Maihan NijatMaihan Nijat
2,70522347
edited Nov 23 '18 at 17:36
Maihan Nijat
asked Nov 23 '18 at 17:06
Maihan NijatMaihan Nijat
2,70522347
asked Nov 23 '18 at 17:06
Maihan NijatMaihan Nijat
2,70522347
asked Nov 23 '18 at 17:06
Maihan NijatMaihan Nijat
2,70522347
2,70522347
1
Can you pls also tell the expected output
– Nitish Narang
Nov 23 '18 at 17:07
Can you also please include a little more of your data? You've just included 1 object from bothMandW.
– slider
Nov 23 '18 at 17:08
But why do you have 2 similar objects inFields? Won't they have the same sum?
– slider
Nov 23 '18 at 17:16
add a comment |
1
Can you pls also tell the expected output
– Nitish Narang
Nov 23 '18 at 17:07
Can you also please include a little more of your data? You've just included 1 object from bothMandW.
– slider
Nov 23 '18 at 17:08
But why do you have 2 similar objects inFields? Won't they have the same sum?
– slider
Nov 23 '18 at 17:16
1
1
Can you pls also tell the expected output
– Nitish Narang
Nov 23 '18 at 17:07
Can you pls also tell the expected output
– Nitish Narang
Nov 23 '18 at 17:07
Can you also please include a little more of your data? You've just included 1 object from both
M and W.– slider
Nov 23 '18 at 17:08
Can you also please include a little more of your data? You've just included 1 object from both
M and W.– slider
Nov 23 '18 at 17:08
But why do you have 2 similar objects in
Fields? Won't they have the same sum?– slider
Nov 23 '18 at 17:16
But why do you have 2 similar objects in
Fields? Won't they have the same sum?– slider
Nov 23 '18 at 17:16
add a comment |
1 Answer
1
active
oldest
votes
1
For efficiency:
- Convert to an object for quicker accessibility
- Use for loops, not forEach
'use strict';
const M = {
'ModuleName': 'GDD',
Fields: [
{'FieldID': 5, 'Date': '2018-05-01'},
{'FieldID': 6, 'Date': '2018-05-01'}
]
};
const W = [
{'FieldID': 5, 'Value': 10, 'WDate': '2018-06-05'},
{'FieldID': 5, 'Value': 10, 'WDate': '2018-06-05'},
{'FieldID': 6, 'Value': 50, 'WDate': '2018-07-05'},
{'FieldID': 6, 'Value': 20, 'WDate': '2018-09-05'}
];
let d, e, f = {};
// build object for quicker findability
for (e of M.Fields) {
f[e.FieldID] = e;
e.sum = 0;
}
for (e of W) {
if (d = f[e.FieldID]) {
if (e.WDate >= d.Date) {
d.sum += e.Value;
}
} else {
console.log(`could not find FieldID ${e.FieldID}`)
}
}
console.log(JSON.stringify(M, null, 4));answered Nov 23 '18 at 17:47
niryniry
1,3891121
add a comment |
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1 Answer
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votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
1
For efficiency:
- Convert to an object for quicker accessibility
- Use for loops, not forEach
'use strict';
const M = {
'ModuleName': 'GDD',
Fields: [
{'FieldID': 5, 'Date': '2018-05-01'},
{'FieldID': 6, 'Date': '2018-05-01'}
]
};
const W = [
{'FieldID': 5, 'Value': 10, 'WDate': '2018-06-05'},
{'FieldID': 5, 'Value': 10, 'WDate': '2018-06-05'},
{'FieldID': 6, 'Value': 50, 'WDate': '2018-07-05'},
{'FieldID': 6, 'Value': 20, 'WDate': '2018-09-05'}
];
let d, e, f = {};
// build object for quicker findability
for (e of M.Fields) {
f[e.FieldID] = e;
e.sum = 0;
}
for (e of W) {
if (d = f[e.FieldID]) {
if (e.WDate >= d.Date) {
d.sum += e.Value;
}
} else {
console.log(`could not find FieldID ${e.FieldID}`)
}
}
console.log(JSON.stringify(M, null, 4));answered Nov 23 '18 at 17:47
niryniry
1,3891121
add a comment |
1
For efficiency:
- Convert to an object for quicker accessibility
- Use for loops, not forEach
'use strict';
const M = {
'ModuleName': 'GDD',
Fields: [
{'FieldID': 5, 'Date': '2018-05-01'},
{'FieldID': 6, 'Date': '2018-05-01'}
]
};
const W = [
{'FieldID': 5, 'Value': 10, 'WDate': '2018-06-05'},
{'FieldID': 5, 'Value': 10, 'WDate': '2018-06-05'},
{'FieldID': 6, 'Value': 50, 'WDate': '2018-07-05'},
{'FieldID': 6, 'Value': 20, 'WDate': '2018-09-05'}
];
let d, e, f = {};
// build object for quicker findability
for (e of M.Fields) {
f[e.FieldID] = e;
e.sum = 0;
}
for (e of W) {
if (d = f[e.FieldID]) {
if (e.WDate >= d.Date) {
d.sum += e.Value;
}
} else {
console.log(`could not find FieldID ${e.FieldID}`)
}
}
console.log(JSON.stringify(M, null, 4));answered Nov 23 '18 at 17:47
niryniry
1,3891121
add a comment |
1
1
1
For efficiency:
- Convert to an object for quicker accessibility
- Use for loops, not forEach
'use strict';
const M = {
'ModuleName': 'GDD',
Fields: [
{'FieldID': 5, 'Date': '2018-05-01'},
{'FieldID': 6, 'Date': '2018-05-01'}
]
};
const W = [
{'FieldID': 5, 'Value': 10, 'WDate': '2018-06-05'},
{'FieldID': 5, 'Value': 10, 'WDate': '2018-06-05'},
{'FieldID': 6, 'Value': 50, 'WDate': '2018-07-05'},
{'FieldID': 6, 'Value': 20, 'WDate': '2018-09-05'}
];
let d, e, f = {};
// build object for quicker findability
for (e of M.Fields) {
f[e.FieldID] = e;
e.sum = 0;
}
for (e of W) {
if (d = f[e.FieldID]) {
if (e.WDate >= d.Date) {
d.sum += e.Value;
}
} else {
console.log(`could not find FieldID ${e.FieldID}`)
}
}
console.log(JSON.stringify(M, null, 4));answered Nov 23 '18 at 17:47
niryniry
1,3891121
For efficiency:
- Convert to an object for quicker accessibility
- Use for loops, not forEach
'use strict';
const M = {
'ModuleName': 'GDD',
Fields: [
{'FieldID': 5, 'Date': '2018-05-01'},
{'FieldID': 6, 'Date': '2018-05-01'}
]
};
const W = [
{'FieldID': 5, 'Value': 10, 'WDate': '2018-06-05'},
{'FieldID': 5, 'Value': 10, 'WDate': '2018-06-05'},
{'FieldID': 6, 'Value': 50, 'WDate': '2018-07-05'},
{'FieldID': 6, 'Value': 20, 'WDate': '2018-09-05'}
];
let d, e, f = {};
// build object for quicker findability
for (e of M.Fields) {
f[e.FieldID] = e;
e.sum = 0;
}
for (e of W) {
if (d = f[e.FieldID]) {
if (e.WDate >= d.Date) {
d.sum += e.Value;
}
} else {
console.log(`could not find FieldID ${e.FieldID}`)
}
}
console.log(JSON.stringify(M, null, 4));'use strict';
const M = {
'ModuleName': 'GDD',
Fields: [
{'FieldID': 5, 'Date': '2018-05-01'},
{'FieldID': 6, 'Date': '2018-05-01'}
]
};
const W = [
{'FieldID': 5, 'Value': 10, 'WDate': '2018-06-05'},
{'FieldID': 5, 'Value': 10, 'WDate': '2018-06-05'},
{'FieldID': 6, 'Value': 50, 'WDate': '2018-07-05'},
{'FieldID': 6, 'Value': 20, 'WDate': '2018-09-05'}
];
let d, e, f = {};
// build object for quicker findability
for (e of M.Fields) {
f[e.FieldID] = e;
e.sum = 0;
}
for (e of W) {
if (d = f[e.FieldID]) {
if (e.WDate >= d.Date) {
d.sum += e.Value;
}
} else {
console.log(`could not find FieldID ${e.FieldID}`)
}
}
console.log(JSON.stringify(M, null, 4));'use strict';
const M = {
'ModuleName': 'GDD',
Fields: [
{'FieldID': 5, 'Date': '2018-05-01'},
{'FieldID': 6, 'Date': '2018-05-01'}
]
};
const W = [
{'FieldID': 5, 'Value': 10, 'WDate': '2018-06-05'},
{'FieldID': 5, 'Value': 10, 'WDate': '2018-06-05'},
{'FieldID': 6, 'Value': 50, 'WDate': '2018-07-05'},
{'FieldID': 6, 'Value': 20, 'WDate': '2018-09-05'}
];
let d, e, f = {};
// build object for quicker findability
for (e of M.Fields) {
f[e.FieldID] = e;
e.sum = 0;
}
for (e of W) {
if (d = f[e.FieldID]) {
if (e.WDate >= d.Date) {
d.sum += e.Value;
}
} else {
console.log(`could not find FieldID ${e.FieldID}`)
}
}
console.log(JSON.stringify(M, null, 4));answered Nov 23 '18 at 17:47
niryniry
1,3891121
answered Nov 23 '18 at 17:47
niryniry
1,3891121
answered Nov 23 '18 at 17:47
niryniry
1,3891121
answered Nov 23 '18 at 17:47
niryniry
1,3891121
1,3891121
add a comment |
add a comment |
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1
Can you pls also tell the expected output
– Nitish Narang
Nov 23 '18 at 17:07
Can you also please include a little more of your data? You've just included 1 object from both
MandW.– slider
Nov 23 '18 at 17:08
But why do you have 2 similar objects in
Fields? Won't they have the same sum?– slider
Nov 23 '18 at 17:16