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Questions tagged [data-retrieval]

Data retrieval involves extracting the wanted data from a dataset.

In order to retrieve the desired data the user present a set of criteria by a query which selects the demanded data from the dataset. The retrieved data may be stored in a file, printed, or viewed on the screen.

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Problem with specific fields while querying mongoDB

The problem is with these two fields : Relative Time(h:min:s.ms) and Real time(h:min:s.ms) The values cannot be retrieved While trying to export the collection to csv/json. So I tried the following: full query, able to get the values for both…
iamgr007
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How to fetch multiple rows from fire store and display in Data Table --FLUTTER

I have a collection on firestore named "CASHOUT" having fields Random1,2 and 3. which I am able to fetch and display successfuly in Data table widget But when I created another document with same fiels **It throws me an error…
Raja Sami
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Significance of Query weight in Cosine similarity

QUESTION This is the algorithm i came across: COSINESCORE(q) 1 float Scores[N] = 0 2 Initialize Length[N] 3 for each query term t 4 do calculate *w(t,q)* and fetch postings list for t 5 for each pair(d, tf(t,d) ) in postings list 6 do Scores[d]…
Salik
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How to retrieve data from firebase using firesharp c# library (unknown exact child path)?

I'm trying to make a database that stores dental records. I'm using firesharp library. I made a form called Register UI that registers details of new patients. Then another form called DatabaseUI where records could be retrieved from the database.…
Sky
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Fast data retrieval without indexes on a table with data insertions at every 10 seconds (short time span)

I am fetching data from a table having 20K row from a third-party source where the way of filling the table can't be changed table. On the third party, the table is filled as following New data is coming at every 15 seconds approx 7K rows. At any…
Pankaj Sharma
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Windows phone 7: post some values, retrieve the response

How can I post a value to an online page, and then retrieve the response to put it in a string? It's a PHP page that take the $_POST value and then echo a response that I want to grab.
Zak
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How to search for user data and retrieve them from firebase with flutter?

I am trying to retrieve user data that I stored on firebase database and compare it to an inputed text "trying to login but with another way ;)" but when I search for examples I can't quite understand their methods of retrieving data they don't…
omar developer
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How do I retrieve all data from Firebase realtime database in c# asp.net in aspx page table?

Here's the code: protected async void Page_Load(object sender, EventArgs e) { int i = 1; client = new FireSharp.FirebaseClient(config); for (int row = 0; row < 2; row++) { …
Mubashir Ayub
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What's the increment operator doing here and how it changes the scale?

What's the increment operator doing above inside the forEach block, specifically: d3.tsv('data.tsv', (err, data) => { // clean the data data.forEach(d => { d.date = new Date(d.date); // x ++d[city]; // y` And how does it change the…
user1076808
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how to use getItemAtPosition in my spinner from firebase in google map using android studio

I need help. Here i have load the hospital name from firebase to spinner how i want to getItemAtposition because when i click on hospital name it has to seleceted and clicked on getDirection button in my application so it will reload to the google…
sahana valli
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post data from table row like json format

this is related to my last question( NOTE: I already got some good answers there). I'm doing a program that will filter. I didn't include this question because i thought that it is easier for me to add text as long as i know how to get the data from…
jayAnn
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Is Data Warehousing the Right Solution

I have a vendor system that I can query to get reports or raw data. The data returned are based on internal calculations, I can get also get data based on dates. I have some reports that tend to take a very long time to return results. I think the…
MosesA
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Retrieving eloquent models with constraints on both the parent and child/associated model

I'm trying to retrieve all Eloquent Models that match a particular field in the Parent Model ('Event') and the child model ('Dates'). I've hit an issue whereby Laravel is stating that my field ('date') doesn't exist in the child class, but I can't…
user10198266
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Data retrieval and Querying Elasticsearch with Python

I am trying to get data from Elasticsearch using python. I was able to connect to the data source using python. Connect To Elasticsearch from elasticsearch import Elasticsearch try: es = Elasticsearch( …
James Taylor
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What is the most efficient way to store a set of points (embeddings) such that queries for closest points are computed quickly

Given a set of embeddings, i.e. set of [name, vector representation] how should I store it such that queries on the closest points are computed quickly. For example given 100 embeddings in 2-d space, if I query the data struct on the 5 closest…
Ram
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