How to aggregate data with condition using two arrays?

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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}

   ]

 }

]

edited Nov 23 '18 at 17:36

asked Nov 23 '18 at 17:06

Maihan Nijat

2,99822550

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 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

add a comment |

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}

   ]

 }

]

edited Nov 23 '18 at 17:36

asked Nov 23 '18 at 17:06

Maihan Nijat

2,99822550

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 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

add a comment |

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}

   ]

 }

]

edited Nov 23 '18 at 17:36

asked Nov 23 '18 at 17:06

Maihan Nijat

2,99822550

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

edited Nov 23 '18 at 17:36

asked Nov 23 '18 at 17:06

Maihan Nijat

2,99822550

edited Nov 23 '18 at 17:36

asked Nov 23 '18 at 17:06

Maihan Nijat

2,99822550

edited Nov 23 '18 at 17:36

asked Nov 23 '18 at 17:06

Maihan Nijat

2,99822550

asked Nov 23 '18 at 17:06

Maihan Nijat

2,99822550

asked Nov 23 '18 at 17:06

Maihan Nijat

2,99822550

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 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

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 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

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

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

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

niry

1,4791222

add a comment |

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1 Answer
1

active

oldest

votes

1 Answer
1

active

oldest

votes

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

niry

1,4791222

add a comment |

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

niry

1,4791222

add a comment |

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

niry

1,4791222

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

niry

1,4791222

answered Nov 23 '18 at 17:47

niry

1,4791222

answered Nov 23 '18 at 17:47

niry

1,4791222

answered Nov 23 '18 at 17:47

niry

1,4791222

add a comment |

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