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Relation filter and virtual

Source of Relation test data


{{relation|
filter "Relation test data", foo, bar extend quark foo*bar
print fields
}}

filter foo "", bar ""
print

foo bar
1 3
bar 1

filter _name "Relation test data", *
print

_name foo bar
Relation test data 1 3

Current bug: The wildcard * finds all fields, but does not pad multiple tuples in the page

virtual "Relation test data"
print

foo bar quark
1 3 3
bar 1 0
1 3 0