Modify A Column From Nvarchar(50) To A DateTime

Jun 3, 2007

Hello,

I have a column that is a currently set as nvarchar(50) and is called DateEmployed.
There are over a hundred rows that contain dates which is in nvarchar format.

This column now needs to be changed to a DateTime datatype. (Don't ask me it was not set
to a dateTime when this was first designed - I wasn't here)

However, I have to change this column to a DateTime without destroying the data.

Is there any easy way to write some script or use studio management to change this.

Currently the data is displayed like this in this column dd/MM/yyyy i.e. 25/8/2007.

The method I am using to try and change this is by going to studio management clicking
modify on the column and changing the datatype from a nvarchar(50) to a DateTime.

I get this following error message:
- Unable to modify table.
Arithmetic overflow error converting expression to data type datetime.
The statement has been terminated.

Any suggestions would be most grateful,

Thanks,

Steve

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I am trying to convert a column (nvarchar) to date time.

Here is an example of some values:

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As expected, I received the following error: 'Conversion failed when converting date and/or time from character string.'

However, I am unsure how I should approach updating the whole column. I would like the format to be '103'.

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Hi all, Please help.
I have created a new SQL dB and imported a table from Access to SQL.
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My problem is that in the table design of my new SQL Table, if I change the datatype from nvarchar(50) to datetime I get the error "Arithmetic overflow error converting expression to data type datetime"

I know this is telling me that there is a problem with the format of some of the dates but all my dates are defo dd/mm/yyyy ,none of the data has format mm/dd/yyyy ie a 13th month.I know this because I cut the data down to just 2 pieces of data.
can someone help me get the format into datetime please
Ray..

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Hi,
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So as the subject says, I have a few fields that are nvarchar but hold date information. Most of these fields I have been able to move to datetime easiliy enough, simply by going into edit mode for the table and converting the fields to datetime. But 1 field is giving me problems I keep getting this error.
quote:- Unable to modify table.
Arithmetic overflow error converting expression to data type datetime.
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I really dont know why I'm getting this error, but I"m assuming it may have to be something like one of the records may not be in date format. But I don't know if this is the case and I don't know how to locate where my problem is coming from.
Any guidance is greatly appreciated.

Thanks.

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UPDATE users SET DATE2 = DATE.. But it also faild,..

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Apr 8, 2004

HI,
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OUT OF WHICH ONE IS A COLUMN CALLED AS FORM_RECEIVE_DATE WHICH HAS NVARCHAR(41) AS DATATYPE IN THE OLD TABLE CREATED BY A PREVIOUS DBA (DON'T KNOW wHY?)

wHILE CONVERTING IT INTO DATATYPE DATETIME , I AM GETTING THIS ERROR :- "Arithmetic overflow error converting expression to data type datetime." i DON'T KNOW WHY

hERE ARE FEW EXAMPLES OF THE DATA CONTAINED IN THE PREVIOUS TABLE :-

05082003
05062003
05142003

COULD YOU PLS TELL ME A WAY TO SOLVE THIS ?

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Jun 2, 2008

Hi,

I'm pretty desperat after trying solving the above problem in several days. I hope somone here can help me :-)

I have this stored procedure. When I try to Execute the storedprocedure where I have a date as parameter I get the above error.

I checked (many times), that the input parameter is a datetime format (30-05-2008) and also I checked the tabel and it is datetime format. I checked the table to see if it was english datetime format - but all the datetimes that are listet are listed in danish datetime format DD-MM-YYYY.

In the stored procedure I try this:

fProjectSkuTimeStamp >= @ReducedTime

I can't figure out where it gets that nvarchar from?

My stored procedure look like this:

set ANSI_NULLS ON

set QUOTED_IDENTIFIER ON

set NOCOUNT ON

go

ALTER PROCEDURE [dbo].[GetProjectSkuList]

@fProjectFId AS INTEGER = null, --ProjektId

@ReducedTime AS DATETIME --Tidsrum fra

AS

BEGIN

SELECT tProjectSku.fProjectSkuPId, tProjectSku.fCompanyFId, tProjectSku.fProjectFId,

tProjectSku.fProjectSkuDate,

tProjectSku.fOurContactFId, tProjectSku.fOurContactF2Id, tProjectSku.fOrderFId,

tProjectSku.fProjectSkuTimeStamp,

tProjectSku.fProjectSkuNote1, tProjectSku.fProjectSkuNote2, tProjectSku.fContactFId,

tProjectSku.fStoreTransactionsFId,

tProjectSku.fProjectSkuSalesPrice, tCompany.fCompanyName, tProject.fProjectName,

tOurContact.fOurContactFirstName + ' ' + tOurContact.fOurContactLastName AS CreatedBy,

tOurContact_1.fOurContactFirstName + ' ' + tOurContact_1.fOurContactLastName AS Responsible,

tContact.fContactFirstName + ' ' + tContact.fContactLastName AS ContactFullName,

tStoreTransactions.fStoreTransactionsCostPrice,

tStoreTransactions.fStoreTransactionsSerialNo

FROM tOurContact AS tOurContact_1 RIGHT OUTER JOIN

tContact RIGHT OUTER JOIN

tProjectSku LEFT OUTER JOIN

tStoreTransactions ON tProjectSku.fStoreTransactionsFId = tStoreTransactions.fStoreTransactionsPId ON

tContact.fContactPId = tProjectSku.fContactFId LEFT OUTER JOIN

tOrder ON tProjectSku.fOrderFId = tOrder.fOrderPId ON tOurContact_1.fOurContactPId = tProjectSku.fOurContactF2Id LEFT OUTER JOIN

tOurContact ON tProjectSku.fOurContactFId = tOurContact.fOurContactPId LEFT OUTER JOIN

tProject ON tProjectSku.fProjectFId = tProject.fProjectPId LEFT OUTER JOIN

tCompany ON tProjectSku.fCompanyFId = tCompany.fCompanyPId

WHERE

(tProjectSku.fProjectFId = @fProjectFId) AND

--fProjectSkuTimeStamp >= CONVERT(datetime, @ReducedTime, 120)

fProjectSkuTimeStamp >= @ReducedTime

ORDER BY tProjectSku.fProjectSkuPId DESC

END

Kind regards,

simsen :-)

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Aldo.

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======================================
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