I am trying to sum this column by casting this as numeric, but the values have commas as well which are the source of error on my query:
SELECT date_trunc('day', to_date("date" , 'mm-dd-yyyy')) as day,
"from merch",
sum(CAST("amount " AS numeric)) as amount
FROM tb
GROUP BY 1,2
ORDER BY 1,2;
I am trying to get the sum of amounts for each "from merch" per day.
Error i get is: Invalid Digit, Value ',', Pos 1, Type: Decimal
CodePudding user response:
using replace(string,FromValue,ToValue)
NOTE: this assumes you have amount in a ###,###.00 format. if not you could return bad data.
with tb AS
(SELECT '1,000.01' as "amount", '01-01-2022' as "date",'z' as "from merch" UNION ALL
SELECT '10,000.02' as "amount", '01-01-2022' as "date",'z' as "from merch" UNION ALL
SELECT '100,000.02' as "amount", '02-01-2022' as "date",'y' as "from merch")
SELECT date_trunc('day', to_date("date" , 'mm-dd-yyyy')) as day,
"from merch",
sum(CAST(replace("amount",',','') AS numeric)) as amount
FROM tb
GROUP BY 1,2
ORDER BY 1,2;
sum(CAST(replace("amount",',','') AS decimal(10,2))) as amount
This is assuming you've identified the problem correctly.
I (not so recently) found an exchange in comments humorous:
- If you EVER need to do math on it, store it as a number
- If you'll NEVER do math on it store it as string
- If it needs to do both, you need two columns
- Except for dates... store dates as dates period and use date functions on them... not string {shudder} functions!
- and AutoIncrements can be numbers (though we should never do math on them)
@xQbert -- this shall henceforth be referred to as "xQbert's razor"