\set ECHO none
remove_provenance

(1 row)
city|how
Berlin|Ellen⋅Susan
New York|John⋅Paul
Paris|Dave⋅Magdalen + Dave⋅Nancy + Magdalen⋅Nancy
(3 rows)
remove_provenance

(1 row)
city|how
Berlin|2⋅Ellen⋅Susan + Ellen^2 + Susan^2
New York|2⋅John⋅Paul + John^2 + Paul^2
Paris|2⋅Dave⋅Magdalen + 2⋅Dave⋅Nancy + Dave^2 + 2⋅Magdalen⋅Nancy + Magdalen^2 + Nancy^2
(3 rows)
create_provenance_mapping

(1 row)
remove_provenance

(1 row)
city|how
Berlin|4⋅Ellen⋅Susan
New York|4⋅John⋅Paul
Paris|4⋅Dave⋅Magdalen + 4⋅Dave⋅Nancy + 4⋅Magdalen⋅Nancy
(3 rows)