I have in my select clause:
AVG (cast(scale as decimal(5,2)))
I keep getting a number like: 0.6523412897, nothing I do seems to get me to my desired: 0.65.
Basically I want to have a scale of 2 (two decimal places).
Thanks
Cast the average, don't average the cast:
cast(AVG(scale) as decimal(5,2))
Update
Using ROUND() changes the value not the type. Eg. select round(0.12345,2) returns 0.12000 as it should becuase it rounds 0.12345 to 0.12 but keeps the original type with 5 decimals after the point, hence 0.12000. To change the type one must use cast, as in my post.
Try
ROUND(AVG(scale), 2)
It depends upon the database you are using, but ROUND is the answer for SQL Server:
ROUND
Related
I know REAL data type is not accurate and normally for currency I should use numeric data type.
But, I'm asked to do some stuff and one of the conditions is that the data type is real.
When I try to do round((....),2) for example, I get that round function does not exist for this data type.
My question is, without converting, is there any function that can return a REAL value rounded to 0?
Many thanks!1
As you can see here it's no way to round without any type cast. It's only two kinds of function exists:
round(dp or numeric) - round to nearest integer
round(v numeric, s int) - round to s decimal places
Real = double precision. So you need to use convert anyway if you want to get some decimal places:
select round('123.456789'::real::numeric,2)
upd. Keep care about rounding+cast at big real numbers:
select round('12122156.567'::real::numeric, 2); --< rounding up to 6 digits, result = 12122200
select round('12122156.567'::real::DOUBLE PRECISION::numeric,2); --<< rounding result = 12122157
Or you can use round without decimal places:
select round('123.456789'::real)
round a numeric value to 0 after the dot?
ROUND(numeric_value, 0)
After investigation, converting to ::numeric is the only way around
I have 2 columns which I need to divide sum(cola)/sum(ColB), but I am not getting the desired results since SQL server seems to truncate values after decimal
For eg. I have-
select 281370/1035
is giving 271 using simple division, whereas actual result of division is 271.8550724637681 and I want to display 271.8
I tried
SELECT cast(round(281370/1035,1) as numeric(36,1))
but that results 271.0
In SQL Server, you have to cast the integers to decimal and you could use Round to get desired precision.
SELECT cast(Round(CAST(281370 AS decimal) / CAST(1035 AS decimal),1,1) as decimal(10,1))
The problem is that you given the int number and want a decimal result
try this
select convert(decimal(30,10),281370.0/1035.0)
or
select Round(convert(decimal(30,10),281370.0/1035.0),1,1)
#Stormcloak gives the answer to specifically wanting a single position as a mantissa, however to return an exact answer you could "simply" implicitly change the datatype.
select 281370.0/1035
Returns:
271.855072
In Presto DB:
select (CAST(11 as decimal(8,6))/CAST(7 as decimal(8,6))) as result
result:1.571429
decimal(xp,xs)
xp--> total number of digits(before decimal point+ after decimal
point)
xs--> number of digits after the decimal point
reference: https://prestodb.io/docs/current/functions/decimal.html
I'm trying to convert a number to a decimal with two decimals places.
SELECT CONVERT(DECIMAL(10,2),12345)
The above would return 12345.00 but I'm trying to achieve 123.45
You need something like that:
SELECT CONVERT(DECIMAL(15,2),12345/100.0)
SELECT CONVERT(DECIMAL(10,2),CAST(12345 as float)/CAST(100 as float))
Correction: The premise is somewhat flawed, as the data type of a literal number without a decimal point is int, not numeric as implied by the question. In that case, you do need to convert the initial value to either numeric or decimal before dividing:
SELECT CONVERT(DECIMAL,12345)/100
or
SELECT CAST(12345 AS DECIMAL)/100
(cast is the SQL standard, so if you ever want to apply this to other databases, it would be the preferred method.)
Alternately, you can just add a decimal point to the divisor, as SQL server will return the more precise data type when doing arithmetic on heterogeneous types:
SELECT 12345/100.0
According to the documentation, the numeric data type is functionally equivalent to the decimal datatype, so there's really no reason to convert between the two. It seems that all you really want to do is divide the value you have by 100:
SELECT 12345/100
Here is the SELECT statement:
SELECT ROUND(ISNULL(SUM(Price),0),2) As TotalPrice
FROM Inventory
WHERE (DateAdded BETWEEN #StartDate AND #EndDate)
Any ideas of why it's not rounding to two decimal places?
instead of ROUND(ISNULL(SUM(Price),0),2) you could try CAST(ISNULL(SUM(PRICE),0) AS DECIMAL (4,2))
What datatype is Price?
ROUND in BOL
SELECT ROUND(123.4545, 2); -- = 123.4500
GO
SELECT ROUND(123.45, -2); -- = 100,00
GO
The underlying datatype stays the same: you merely round but leave trailing zeros.
For 2 decimal place output, you'd need to CAST to decimal(x, 2)
You might be having marshalling issues for the column in your environment. Might try an explicit cast CAST(ROUND(...) AS NUMERIC(18,4)) or even just try making 0 0.0. Make sure also you are binding the column with the proper datatype in your application.
All the cool people use COALESCE instead of ISNULL. COALESCE is portable and you can have as many parameters as you want (not just two!!)
Anyway I'm not sure if this was just an example but you may also have DA issues with your data if it had not already been rounded at this stage.
I have the following values being returned in a column.. 0.250000 and 13.000000. I'd like to round the 0.250000 up to 1 and leave the 13 as is. Any easy way to do this since they both fall within the same column?
Your DBMS probably has a CEILING function. Try that.
The ceiling function will work well because you want to round to the nearest whole number. For more methods on rounding with SQL Server....
SQL Server Rounding Methods
select CEILING( columnname ) from tablename