\set ECHO none
add_provenance

(1 row)
remove_provenance

(1 row)
id|value|valid_time
1|1|{["1970-01-01 00:00:00+00",)}
2|2|{["1970-01-01 00:00:00+00","1970-01-01 00:00:01+00")}
3|4|{["1970-01-01 00:00:02+00",)}
3|3|{["1970-01-01 00:00:00+00","1970-01-01 00:00:02+00")}
(4 rows)
remove_provenance

(1 row)
id|value
1|1
3|4
(2 rows)
remove_provenance

(1 row)
id|value|valid_time
1|1|{["1970-01-01 00:00:00+00",)}
3|4|{["1970-01-01 00:00:02+00",)}
(2 rows)
remove_provenance

(1 row)
id|value|valid_time
1|1|{["1970-01-01 00:00:00+00",)}
3|4|{["1970-01-01 00:00:02+00",)}
(2 rows)
remove_provenance

(1 row)
id|value|valid_time
3|4|{["1970-01-01 00:00:02+00",)}
3|3|{["1970-01-01 00:00:00+00","1970-01-01 00:00:02+00")}
(2 rows)