explain
select *
from links l
inner join (
values (1,2,3,4),(1,2,5,4),(8,4,3,2)
) v(id1, id2, id3, id4) using(id1, id2, id3, id4);
QUERY PLAN
Hash Join (cost=0.10..36.86 rows=1 width=48)
Hash Cond: ((l.id1 = "*VALUES*".column1) AND (l.id2 = "*VALUES*".column2) AND (l.id3 = "*VALUES*".column3) AND (l.id4 = "*VALUES*".column4))
-> Seq Scan on links l (cost=0.00..20.70 rows=1070 width=48)
-> Hash (cost=0.04..0.04 rows=3 width=16)
-> Values Scan on "*VALUES*" (cost=0.00..0.04 rows=3 width=16)
…
hidden batch(es)
-- DANGER! With non-unique values, you get more rows than an IN clause would return
select *
from links l
inner join (
values (1,2,3,4),(1,2,5,4),(1,2,5,4)
) v(id1, id2, id3, id4) using(id1, id2, id3, id4);
id1
id2
id3
id4
content
1
2
3
4
Text
1
2
5
4
Other thing
1
2
5
4
Other thing
…
hidden batch(es)
-- If you aren't certain, select distinct
select *
from links l
inner join (
select distinct *
from (values (1,2,3,4),(1,2,5,4),(1,2,5,4)) vi(id1, id2, id3, id4)
) v using(id1, id2, id3, id4);
