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The documentation only mentions the syntax without a src-var:

pull-expr = ['pull' variable pattern]

but found that this syntax also works:

pull-expr = ['pull' src-var variable pattern]

I have a self-contained code example here, which demonstrates a use-case, where an entity is split between 2 Datomic databases, for privacy reasons:


Is this variant of the pull-expr in Datalog queries are not supported officially?

Should I use it in production or does it have some undefined behaviour, compared to its binary arity variant?

Or the documentation is just incomplete?

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