@alexl Thanks for the heads up. Those sound like powerful tools, if a little beyond my current use case for Obsidian. I will need to read up on them as I currently have no experience with or understanding of them. A quick search turned up dataview queries in Obsidian - is this something similar?
Powerful as this all sounds, I am disappointed with some of the basics in #logseq. I do not for example understand why I cannot zoom in on a title line and have the bullet points below it included in the block unless those bullets are indented. Similar problem with H1, H2 etc. These to me form a hierarchy yet logseq treats them as equivalent unless indented.
Dataview is a plugin for Obsidian, the idea is similar but properly implemented in #Logseq. Logseq is that at its core, turning text notes into a modern database.
#Datalog is the query language (like SQL but way more powerful) that Logseq use internally but it is also available to the user with so called Advanced Queries.
And being able to use #Hiccup (an alternative syntax to HTML) to style results means you as a user can remodel Logseq to your needs. It's a very innovative approach.