SELECT
sum(qty) as accept,
(SELECT sum(qty)
FROM pile
WHERE pf=false) as reject
FROM pile
WHERE pf=true;
That's the SQL I use currently, but I'm guessing its not best practice? The other alternative I used before was SELECT sum(qty) FROM pile GROUP BY pf
but I need them as columns and not as rows.
Are there any other solutions?
Single pass through the table.
SELECT
sum(CASE WHEN pf = TRUE THEN qty ELSE 0 END) as accept,
sum(CASE WHEN pf = FALSE THEN qty ELSE 0 END) as reject
FROM pile;
SELECT pileTrue.sumTrue as accept, pileFalse.sumFalse as reject
FROM
(SELECT sum(qty) sumFalse FROM pile WHERE pf=false) as pileFalse,
(SELECT sum(qty) sumTrue FROM pile WHERE pf=true ) as pileTrue
Not any better, but more readable IMO.
SELECT
accept = (SELECT sum(qty) FROM pile WHERE pf = true),
reject = (SELECT sum(qty) FROM pile WHERE pf = false)
check it
select max(accept), max(v2 )
from
(
SELECT
sum(qty) as accept,null v2
FROM pile
WHERE pf=true
union
SELECT null accept,sum(qty) v2
FROM pile
WHERE pf=false
)
group by accept,v2
SELECT (SELECT SUM(qty)
FROM pile
WHERE pf = true) AS accept,
(SELECT SUM(qty)
FROM pile
WHERE pf = false) AS reject
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