I am working on a question where I want to have a dynamic filter for date(I want to see the last 6 months based on today's date). Orderdate is INT which is why I am using nvarchar and then date. When I use the code below I get the following error message "Conversion failed when converting date and/or time from character string.". Does anyone know what I can do to fix this?
cast(cast(OrderDate as nvarchar) as date) > dateadd(month,-6, getdate())
The obvious solution is to use try_convert().
try_convert(date, try_convert(varchar(255), OrderDate)) > dateadd(month, -6, getdate())
That will remove the error, but probably does not fix the underlying problem.
You can find the offending values by doing:
select OrderDate
from t
where OrderDate is not null and
try_convert(date, try_convert(varchar(255), OrderDate)) is null
Related
NPD.CreatedOn is defined as a datetime datatype column (in SQL Server).
SELECT *
FROM NPDMaster NPD
WHERE DATEDIFF(MONTH, CONVERT(VARCHAR(7), NPD.CreatedOn, 126), CONVERT(VARCHAR(30), GETDATE(), 126)) <= 6
I get this error:
Conversion failed when converting date and/or time from character string.
What can I try to resolve it?
Don't use things like DATEDIFF in the WHERE on your columns, such queries aren't SARGable and thus can (will) perform poorly. If you want rows where the date is on or after the start of the month 6 months ago then do the date logic on GETDATE()/SYSDATETIME()/etc:
SQL Server doesn't have a "start of month" function, but you can use EOMONTH and then add a day:
SELECT *
FROM dbo.NPDMaster NPD
WHERE NPD.CreatedOn >= DATEADD(DAY, 1, EOMONTH(GETDATE(),-7));
You don't need to convert the datetime values to text. DATEDIFF() expects datetime values as second and third argument:
SELECT *
FROM NPDMaster NPD
WHERE DATEDIFF(month, NPD.CreatedOn, GETDATE()) <= 6
The actual reason for the error (as is explained in the documentation), is that ...DATEDIFF implicitly casts string literals as a datetime2 type.
I have a column in a table with this format '2017-05-09 14:52:32.000' I would appreciate a way to convert it to a date format like MM/DD/YYYY
I have tried with:
select DATEADD(column, DATEDIFF(column, 0, getdate()), 0)
FROM table
but I get this error:
Column is not a recognized datediff option.
I've also tried another way and failed.
Please advise.
I'm assuming from the error message you reported that you're on SQL Server.
In SQL Server, the DATEADD and DATEDIFF functions take a "date part" as the first argument: YEAR, MONTH, DAY, HOUR, MINUTE, SECOND or MILLISECOND:
SELECT DATEADD(DAY, DATEDIFF(DAY, [COLUMN], GETDATE()), [COLUMN])
FROM [TABLE]
might be want what you want.
However,
SELECT CONVERT(DATE, [COLUMN]) AS [COLUMNDATE]
Might be even easier.
I am trying to query against the columns SOE (datetime field) and Answer (varchar field) from a table where NOT ALL Answer values are dates but some of them are. If I remove the datediff from the 'where' clause, I'm able to run the query just fine. But on including it, it errors out saying that 'Conversion failed when converting date and/or time from character string'.
For context, I'm using SQL Server 2014.
This is what my query looks like:
select ID,
convert(datetime, Answer, 121) as Answer,
datediff(dd,convert(datetime,
Answer, 121), SOE) as Days
from table
where Type in (1) and SOE between '2019-01-01' and '2019-03-31'
and FormLocation = 'M1005_INP_DISCHARGE_DT'
and PayorType = 'Medicare'
and Answer <> ' '
datediff(dd, convert(datetime, Answer, 121), SOE) <= 5
Any tips on how to resolve this would be appreciated.
Before doing the conversion to datetime make sure the data in the "Answer" field can be converted to date. Try this...
and ((isdate(Answer) = 1) and (datediff(dd, convert(datetime, Answer, 121), SOE) <= 5))
Since 2012 you can use try_convert().
...
datediff(dd, try_convert(datetime, Answer, 121), SOE) <= 5
...
try_convert() returns NULL if the conversion doesn't succeed. And so does datediff() then. So you might want to handle that case some way.
Using apply you can save yourself some repetitive code:
select ID,
answer_datetime as Answer,
datediff(day, answer_datetime, SOE) as Days
from table t cross apply
(values (try_convert(datetime, Answer, 121))) v(answer_datetime)
where Type in (1) and
SOE between '2019-01-01' and '2019-03-31' and
FormLocation = 'M1005_INP_DISCHARGE_DT' and
PayorType = 'Medicare' and
Answer <> ' ' and
datediff(day, answer_datetime, SOE) <= 5;
But you should really fix the data definitions so date/times are stored using the correct type.
What am I doing wrong here? I've looked through other posts but I'm getting different results than other people.
Trying to convert a varchar YYYYMMDD to datetime, and I keep getting:
Msg 8115, Level 16, State 2, Line 2
Arithmetic overflow error converting expression to data type datetime.
Attempts:
CONVERT(DATETIME, EXPDATE)
CONVERT(DATETIME, EXPDATE, 102)
(CONVERT(DATETIME, CAST(EXPDATE AS CHAR(8)), 112))
CONVERT(DATETIME, CAST(expdate AS VARCHAR(8)))
Am I bungling something obvious here?
You clearly have a values that are not valid dates.
In SQL Server 2012+, I would suggest TRY_CONVERT():
TRY_CONVERT(DATETIME, EXPDATE)
Then, look at the values that are NULL to see where data problems may be.
In earlier versions, you should be able to use isdate():
(CASE WHEN ISDATE(EXPDATE) = 1 THEN CAST(EXPDATE AS DATE) END)
I have a similarly formatted date field (DateKey) in a table I use. I convert it to DATETIME using this syntax:
SELECT CAST(CAST(DateKey AS VARCHAR(10)) AS DATETIME) FROM tblDate
Will this work for you?
Excellent. Gordon and chancrovsky, you helped me flush out the values that were formatted incorrectly. I used a version of what you posted and this worked
(CASE WHEN ISDATE(ExpDate) = 1 THEN CAST(ExpDate AS DATE) ELSE NULL
END) as ExpDate
Thank you so much!
Please help me to find out error in my SQL query. I have created this query to compare dates
select * from Joinplans jp
where cast(convert(varchar,GETDATE(),103) AS datetime) BETWEEN
CASE(convert(varchar,jp.planstartDate,103) AS datetime) AND
CASE(convert(varchar,DATEADD(DAY,jp.planDays,jp.planstartDate),103) AS DATETIME)
It's giving me the error:
incorrect near 'AS'
I am using SQL Server 2005.
You wrote case instead of cast in two instances.
If planStartDate is actually a date, then there is no need to cast it to a character column:
Select ...
From Joinplans jp
where GetDate() Between planStartDate And DateAdd(day, jp.planDays, jp.planStartDate)
Now, if planStartDate is storing both date and time data, then you might want to use something like:
Select ...
From Joinplans jp
Where planStartDate <= GetDate()
And GetDate() < DateAdd(day, jp.planDays + 1, jp.planStartDate)
This ensures that all times on the last date calculated via the DateAdd function are included