I tried to insert the data/table from this site (http://www.eurexchange.com/exchange-de/produkte/idx/dax/17254!quotesSingleViewOption?callPut=Call&maturityDate=201512) to calc via "Link to External Data". But it reported that no it is not existed, s. attachment.
To NEEDINFO, and correcting Product/Component As per help https://help.libreoffice.org/Calc/Inserting_External_Data_in_Table_WebQuery Did queries to this site ever produce OOo/LO/AOO WebQuerry parseable returns? The tables are there once the site composes the query, so they can be copied and pasted into the Calc table. So data can be used--just not convenience of the WebQuerry mechanism.
And little QA touch up, please provide OS and version of LibreOffice working with Calc from.
Created attachment 119555 [details] Insert external data - WebQuerry error
Seems that the query without "!quotesSingleViewOptionin" works fine. http://www.eurexchange.com/exchange-en/products/idx/dax/17254?callPut=Put&maturityDate=201510
I broke this down to ucb/source/ucp/webdav-neon/NeonSession.cxx NeonSession::HEAD() where the NeonHeadRequest for inPath="/exchange-de/produkte/idx/dax/17254!quotesSingleViewOption?callPut=Call&maturityDate=201512" gets a "404 Not Found". I also get 404 with curl --head 'http://www.eurexchange.com/exchange-de/produkte/idx/dax/17254!quotesSingleViewOption?callPut=Call&maturityDate=201512' also for curl --head 'http://www.eurexchange.com/exchange-de/produkte/idx/dax/17254!quotesSingleViewOption' also for curl --head 'http://www.eurexchange.com/exchange-de/produkte/idx/dax/17254?callPut=Call&maturityDate=201512' and for curl --head 'http://www.eurexchange.com/exchange-de/produkte/idx/dax/17254' The first successful HEAD is for curl --head 'http://www.eurexchange.com/exchange-de/produkte/idx/dax/' This smells like a rotten server side.. And OOPS, curl --head 'http://www.eurexchange.com/exchange-en/products/idx/dax/17254?callPut=Put&maturityDate=201510' indeed works, now note the working "exchange-en" vs the not working "exchange-de" AND "201510" vs "201512" AND omitted "!quotesSingleViewOption". However, fiddling with those and trying curl --head 'http://www.eurexchange.com/exchange-en/products/idx/dax/17254!quotesSingleViewOption?callPut=Put&maturityDate=201510' or curl --head 'http://www.eurexchange.com/exchange-de/products/idx/dax/17254!quotesSingleViewOption?callPut=Put&maturityDate=201510' still gives 404.
Go and ask eurexchange.com, I'm resolving this as NOTOURBUG. Specifically, the response to a HEAD request should be identical to a GET request, except the body and payload, see https://tools.ietf.org/html/rfc7231#section-4.3.2 or obsoleted https://tools.ietf.org/html/rfc2616#section-9.4