ESQL: some more test for FROM

alex-spies commented 2 months ago

Let's add some yaml/csv tests that demonstrate how FROM behaves with wildcards. Esp., when an index is missing, when is a FROM query still correct? E.g. if there's an index index1 but no index2, then FROM index* is correct, FROM index1 as well, FROM index1, index2* probably as well, but FROM index1, index2 as well as FROM index2* probably are not.
While we're at it, let's make the examples in from.asciidoc use actual csv tests instead of being just written text; this way we'll be sure they are and remain valid.

elasticsearchmachine commented 2 months ago

Pinging @elastic/es-analytical-engine (Team:Analytics)

alex-spies commented 2 months ago

elastic / elasticsearch