Pivoting while grouping in postgres - postgresql

Question

I've been using crosstab in postgres to pivot a table, but am now needing to add in a grouping and I'm not sure if that's possible.
I'm starting with results like this:
Date Account# Type Count
-----------------------------------------
2020/1/1 100 Red 5
2020/1/1 100 Blue 3
2020/1/1 100 Yellow 7
2020/1/2 100 Red 2
2020/1/2 100 Yellow 9
2020/1/1 101 Red 4
2020/1/1 101 Blue 7
2020/1/1 101 Yellow 3
2020/1/2 101 Red 8
2020/1/2 101 Blue 6
2020/1/2 101 Yellow 4
And I'd like to pivot it like this, where there's a row for each combination of date and account #:
Date Account# Red Blue Yellow
---------------------------------------------
2020/1/1 100 5 3 7
2020/1/2 100 2 0 9
2020/1/1 101 4 7 3
2020/1/2 101 8 6 4
This is the code I've written returns the error "The provided SQL must return 3 columns: rowid, category, and values" which makes sense per my understanding of crosstab.
SELECT *
FROM crosstab(
SELECT date, account_number, type, count
FROM table
ORDER BY 2,1,3'
) AS ct (date timestamp, account_number varchar, Red bigint, Blue bigint, Yellow bigint);
(I wrote the dates in a simplified format in the example tables but they are timestamps)
Is there a different way I can manipulate the first table to look like the second? Thank you!

Answer 1

You can do conditional aggregation:
select
date,
account#,
sum(cnt) filter(where type = 'Red' ) red,
sum(cnt) filter(where type = 'Blue' ) blue,
sum(cnt) filter(where type = 'Yellow') yellow
from mytable
group by date, account#