\set ECHO none
add_provenance

(1 row)
add_provenance

(1 row)
visible_columns
k,provsql
(1 row)
k|gate|p_cond
1|conditioned|0.4000
2|conditioned|0.6000
(2 rows)
k|p_self
1|1.0000
2|1.0000
(2 rows)
ERROR:  ProvSQL: provsql.given (whole-tuple output conditioning) is supported only in a plain per-row SELECT, not in an aggregated / grouped / DISTINCT / set-operation query; condition the individual tokens with the binary | operator instead
remove_provenance

(1 row)
remove_provenance

(1 row)