\set ECHO none
remove_provenance

(1 row)
position|count|formula
Analyst|2 (*)|δ(Dave ⊕ Susan)
Director|1 (*)|δ(John)
Double agent|1 (*)|δ(Magdalen)
Field agent|1 (*)|δ(Ellen)
HR|1 (*)|δ(Nancy)
Janitor|1 (*)|δ(Paul)
(6 rows)
position|aggregation_formula
Analyst|Susan*1+Dave*1
Director|John*1
Double agent|Magdalen*1
Field agent|Ellen*1
HR|Nancy*1
Janitor|Paul*1
(6 rows)
remove_provenance

(1 row)
position|aggregation_formula
Director|John*1
Double agent|Magdalen*1
Field agent|Ellen*1
HR|Nancy*1
Janitor|Paul*1
(5 rows)
remove_provenance

(1 row)
position|aggregation_formula
Director|John*1
Double agent|Magdalen*1
Field agent|Ellen*1
HR|Nancy*1
Janitor|Paul*1
(5 rows)