Database |> Language |> Keywords |> 

FROM

The FROM keyword is how you denote something as being the source you’re looking to pluck or start web traversing from. It expects one argument to be provided like so:

FROM https://news.ycombinator.com
|> ...

However a variable can be referenced as the source like so:

hn <| https://news.ycombinator.com

FROM hn
|> ...

If you’re querying multiple pages with the exact same fields being selecting and grouped by, you can then provide multiple sources to append results from together by separating the arguments to FROM by commas like so:

FROM https://news.ycombinator.com, https://news.ycombinator.com/ask, https://news.ycombinator.com/newest
|> ...

Again, variables can be referenced instead of the exact URL value:

home_page <| https://news.ycombinator.com |
ask_page <| https://news.ycombinator.com/ask |
newest_page <| https://news.ycombinator.com/newest |

FROM home_page, ask_page, newest_page
|> ...

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