Add pipe & reducer #4151

Job	Run time
mariadb (locked, 8.3, ubuntu-latest, 10.5)	1m 3s
mysql (locked, 8.3, ubuntu-latest, 5.7)	1m 46s
mariadb (locked, 8.3, ubuntu-latest, 10.6)	50s
mysql (locked, 8.3, ubuntu-latest, 8.0)	1m 22s
Postgres (locked, 8.3, ubuntu-latest, 12.20)	56s
mariadb (locked, 8.3, ubuntu-latest, 10.11)	58s
Postgres (locked, 8.3, ubuntu-latest, 13.16)	1m 5s
Sqlite (locked, 8.3, ubuntu-latest)	20s
mariadb (locked, 8.3, ubuntu-latest, 11.1)	51s
Postgres (locked, 8.3, ubuntu-latest, 14.13)	1m 24s
mysql (locked, 8.3, ubuntu-latest, 8.4)	1m 4s
Postgres (locked, 8.3, ubuntu-latest, 15.8)	1m 36s
mariadb (locked, 8.3, ubuntu-latest, 11.4)	1m 22s
mysql (locked, 8.3, ubuntu-latest, 9.0)	1m 9s
Postgres (locked, 8.3, ubuntu-latest, 16.4)	1m 24s
Postgres (locked, 8.3, ubuntu-latest, 17.0)	1m 27s
	18m 37s

Provide feedback