Can you use Calc to get data from a table on the web?
As an answer equal to the question - Possibly.
You provide hardly any information in your question. But here is at least something for you to consider. See this post - click here. Although some of the methods utilize macros, the one discussing FILTERXML/WEBSERVICE points to another post which can be done from Calc without macros.
If this answers your question please click on the 
(upper left area of answer).