Import Feed in Sheets - google-sheets

I would like to import this in sheet doc. I am creating a Dashboard and would love to use the RSS feed to populate the live updates. however, after using the importfeed function or import url function it saves indicating the syntax is correct however no data is populated. Any help here?

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Google sheet Import HTML function

Am trying to pull out date fr4om Money control form this function (https://www.moneycontrol.com/indices/fno/view-option-chain/BANKNIFTY/2022-07-28) what could be the formula for This & how we get multiple stock data like nifty, banknifty ,& stocks in variable expiry i used this this ( =IMPORTHTML("https://www.moneycontrol.com/indices/fno/view-option-chain/"&AD3&"/"&W253"","table",2)) but error occurred
I was able to successfully import the table from the mentioned URL using the following formula:
=IMPORTHTML("https://www.moneycontrol.com/indices/fno/view-option-chain/BANKNIFTY/2022-08-04", "table", 2, "en_US")
However you've mentioned that an error ocurred, but you haven't shared the error...
Since you are concatenating parameters to the URL being fetched, I'd recommend investigating the end result of the concatenation and try accessing that newly concatenated URL on a browser to see if it works.
Additionally, I’d recommend adhering to the How to Ask guidelines in order for your questions to be properly answered by the community as well as to provide a minimal reproducible example when posting a question.

How do I use importXML/importHTML to retrieve a stock options chain that is hidden?

I am trying to use importXML or importHTML function to retrieve a stock options chain, specifically using this function to get a table. So far, this is what I have:
=importhtml("https://bigcharts.marketwatch.com/quickchart/options.asp?symb=TSLA","table",3)
The problem I'm getting is that I can't retrieve "hidden" tables. For example, if you go on the website: https://bigcharts.marketwatch.com/quickchart/options.asp?symb=TSLA
If you scroll down on this page the hidden tables would only be revealed if you click on ,"show april 2022", "show may 2022", etc. I am trying to retrieve all of this information.
The end result is that I would like to create a table that looks like this:
https://www.barchart.com/stocks/quotes/tsla/put-call-ratios
And a table that looks like this:
https://www.barchart.com/stocks/quotes/TSLA/options?moneyness=10&view=stacked&expiration=2022-04-14-m
As a result, there are two things that I am trying to create, the above tables shown on barchart.
I have tried to use importHTML or importXML on barchart, but it looks like it's not allowed. If there is a way to directly retrieve the information from barchart, that would be a much better solution rather than having to import all of the data separately using a different website.
Please note, that I do have a beginner knowledge, so a step-by-step solution on what to do would be very helpful. Thank you

How to get Website Value into Spreadsheet?

From website https://goldenmark.com/pl/mysaver/ceny-zlota/ I want to get bolded value in Aktualny kurs: 6940,28 PLN/uncję into my spreadsheet. How to obtain this?
Thank you
You could try xpath and the importxml function:
https://support.google.com/docs/answer/3093342?hl=en
the element you want to import is controlled by JavaScript.
google sheets is not able to import JS content.
you can always test this by disabling JS for a given site and what's left can be scraped

Getting “#N/A” error when using importhtml formula

I was trying to import a table from hket website to run some analysis of my own.
When I used: =importxml("http://www1.hket.com/finance/chart/industry-index.do","//*[#id='eti-finance-chart-table']") which represents the link to the site, I am getting the "N/A" error.
The importxml works fine with gurufocus site.
Can you help me out? I haven't been able to figure out what the issue could be.
from what I understand, hket doesn't use HTML or XML format for their table. If that is the case, is there a script I can use in Google Sheets that will let me extract data from hket?
you can see the culprit if you run this formula:
=IMPORTXML("http://www1.hket.com/finance/chart/industry-index.do", "//*")

Rails 4 .dat import postgreSQL and ajax search

I want to implement a flight search system in Rails 4.
And I found this resource,
My questions are:
I've downloaded the airports.dat file and it contains chunks of data, do I need to import those data into psql? If yes, how?
If I just need the airport ID and name values, how do I selectively import them?
If I want to implement ajax load airport name just like the way expedia.com did, would it be buggy(slow loading time) if I use VPSs like Digitalocean?
Please advise me.
You can write a method that read line by line, and parse every line by the comma (","). Then you have enough information to insert to database.
For example:
flight1 = '507,"Heathrow","London","United Kingdom","LHR","EGLL",51.4775,-0.461389,83,0,"E","Europe/London"'
Then you can get the ID by call flight1.split(",")[0]
The speed of your search function is affected by your search algorithm and how do you implement the logic, and isn't affected by using a VPS.

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