Gurus - How To Do Date Manipulation With Datetime Data
Mar 13, 2001
Hello,
I'm trying to use SQL for data warehousing using dates for manipulating data. As SQL doesnt have date, just timedate, and if I want to compare 2 dates to obtain someones age ( ie date - date of birth = age ) I have to use a TIMEDIFF or equivelent. This is REALLY annoying. Is there anyway to use just dates without having to code extra?
Does SQL ignore the time part of a datetime column - ie can I just do a date manipulation without concerning myself with the time ( assuming the time is NOT default at 00:00:00 for every entry ) or am I stuck with treating the field as a complete datetime? It may seem a dumbass question, but as I have to do a lot of date manipulations, it is essential to know.
Many thanks,
Warwick.
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Feb 27, 2007
Is it possible to pass a DateTime parameter from a master report to a subreport. I have managed to pass a string, but when i pass a DateTime parameter some error regarding its type is thrown. Please point me in the correct direction. Many Thanks.
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Mar 12, 2008
select to_char(INITIAL_LOAD_DATE,'dd-mon-yyyy hh:mi:ss') from trans
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Jul 20, 2007
I have two tables TableA and TableB as shown in the example below. I will have to Update TableA based on the data in TableB.
If a member in TableB has an EmployerId different from the one in TableA where the EffectiveDate in TableB between the EffectiveDate and ExpirationDate in TableA, then it should void the row in TableA and create rows as shown in the example below (Please refer to the 1st record and the last three records).
I would like to get some suggestions on how to do this efficiently. I am not looking for queries, but I need some ideas...
Thanks in advance.
TableA
MemberId EmployerId EffectiveDate ExpirationDate VoidIn
12345 111 1/1/2006 10/31/2006 0
12345 222 11/1/2006 5/31/2007 0
12345 333 6/1/2007 12/31/9999 0
TableB
MemberId EmployerId EffectiveDate
12345 444 4/1/2006
TargetTable (TableA Updated)
MemberId EmployerId EffectiveDate ExpirationDate VoidIn
12345 111 1/1/2006 10/31/2006 1
12345 222 11/1/2006 5/31/2007 0
12345 333 6/1/2007 12/31/9999 0
12345 111 1/1/2006 3/31/2006 0
12345 444 4/1/2006 4/30/2006 0
12345 111 5/1/2006 10/31/2006 0
Thanks
Suresh
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Jul 23, 2007
I have a table with one column as a date field in the form of mm/dd/yyyy and I would like to create a new column on a report as 'Days Open' using the column with random dates in the past and subtracting it from the current system date. Can anyone provide any assistance. I'm very new to SQL Server. I know in Oracle u can use 'sysdate'
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Jul 17, 2006
I need to to get the result of the function GETDATE and converted to a simpler "mm/dd/yyyy" format in order to compare the results to another date in a table. In ACCESS the function DATE returns the format of 'mm/dd/yyyy' since I need to work with date ranges without a need for this application 'HH:MM:SS'
I have try 'TRANSFORM(GETDATE,'mm/dd/yyyy') but I keep getting errors.
I am not sure what I am doing wrong? Any help is appreciated since I need to work in SQL Server 2000.
Gratefull
Neil
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Feb 20, 2008
I have a column(dts) in the database that will retun the date in this format:
2008-02-19 15:10:59:840
I would like it to ve convert it the this format:
Feb -19-08
or
Feb -19-2008
Thanks
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Sep 2, 1999
Given any date, how can I change that date to be one of the next 3 year cycle dates.
These are the fixed cycle dates (always on Sep 1 on those set years)
9/1/1997
9/1/2000
9/1/2003
etc.
For example,
if the supplied date was January 4, 1998, it would convert to September 1, 2000
October 31, 2000 -> September 1, 2000
Decemb 12, 2005 -> September 1, 2006
January 1, 1995 -> September 1, 1997
Thanx,
Angel
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Oct 11, 2007
I'm quite new to SQL Server and I have a pretty naive question.
I have a table called Company that has a field called Renewal date. I have a task that needs to be run on the first of every month to gather all companies that have Renewal Dates coming up in the next 180 days. The Renewal Date is a datetime field in Sql Server. Is there a way I can have this accomplished.
Any help is greatly appreciated.
Thanks,
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Apr 4, 2008
I have data from an OLE DB connection in a Dataflow. This data has a datetime column. I am trying to use a derived column object to add new date data to the destination column in the destination table. I would like to change the data in the datetime column, add some time to the value and add as a new column in the destination. The expression I am trying to use is " DATEADD(Hh, 6 , datevalue). " SSIS doesnt like this expression as the datevalue data is a column. How would I accomplish this task using SSIS?
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Nov 3, 2000
Probably this will be a silly question?
1. How can I Put all the Q documents from Microsoft that are related to SQL server? So that I can search fast.
2. How can I search SWYNK for all the ANSWERS that MAK/CRAIG/RAY replied to the threads. Its so weird that I answered someone and now I forgot the answer what I posted. Now I am having the same problem. I cant search.
3. I wanna put all SWYNK's Questions responses in one database say SQLSERVER, so that I can search all the threads.
I had sent many emails to SWYNK. No reply so far.
Any inputs r well appreciated!!!!!!
-MAK
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Nov 27, 2011
How I can use only "date" from datetime data type? Because I want only date not time to be display in my application, how to do that ?
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Jul 23, 2005
Greetings All, I was hoping that someone might be able to help me withthe following issue:table ddl:create table exchange(exchangefrom varchar(6),exchangeto varchar(6),exchangecode varchar(6),datemfrom datetime,dateto datetime,exchangerate decimal(28,10))The data in this table under normal conditons will look like:select *from exchangeUSD EURO GL 01/01/2004 01/31/2004 .7523453111USD GBP GL 01/01/2004 01/31/2004 .5384966123USD EURO GL 02/01/2004 02/29/2004 .7523492111USD GBP GL 02/01/2004 02/29/2004 .6004972023My task is to calculate the days delimeted by the start and end date ofthe period which is simple enough:select exchangefrom, exchangeto, exchangecode, datemfrom, dateto,datediff(d, datemfrom, dateto)from exchangeHowever due to circumstances beyond my control the dateto field maycontain a null instead of a valid end date!! YIKES:select *from exchangeUSD EURO GL 01/01/2004 01/31/2004 .7523453111USD GBP GL 01/01/2004 NULL .5384966123USD EURO GL 02/01/2004 02/29/2004 .7523492111USD GBP GL 02/01/2004 02/29/2004 .6004972023My solution to correct the data is to populate the missing end datewith the (start date -1 day) of the next period. However, I am notsure how to do this with SQL? E.g) from the example directly above therow: USD GBP GL 01/01/2004 NULL needs to be updated to:USD GBP GL 01/01/2004 01/31/2004 and this can be done bylooking for the next period (USD GBP GL 02/01/200402/29/2004) that follows and subtracting from its start date 1 day (02/01/2004 - 1 day = 01/31/2004) and that will give me the appropriateend date.If anyone has any insight into solving this problem I would be verythankful.Regards, TFD.
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Dec 18, 2013
Is there a performance impact (if so, how great is it) when comparing a date to a datetime data type?
An educated guess suggests yes, as there will be a type casting... but then again I don't believe there's an issue when comparing an int to a tinyint and there's an assumption these would play by the same rules?
This has only come about because I'm considering changing the data type used in my standard calendar script and this popped in to my head.
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Nov 2, 2003
Hi,
I am using one datetime data type ( name: date_added ) and getdate() as default value. I want to display only those records added today. How I can compare current date with date_added.
Thanks
Manoj
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Mar 1, 2015
I have a question on date manipulation functions and CASE statements
My sql is passed the following parameter's and performs a select using a manipulation on these date param's to get a start and end date range depending on the conditions;-
monthColHeader = eg 'Feb 2015'
defaultStartDate and defaultEndDate
filterStartDate and filterEndDate.
These are my conditions;-
if defaultStart and End = filterStart and End use monthColHeader for the date range
if defaultStart and End != filetrStart and End AND the month/year of filterStart and filterEnd match then use the filterStart & End month/Year with the monthColHeader to get the date range
if defaultStart and End != filetrStart and End AND the month/year of filterStart and filterEnd DON't match use filterStart Day and monthColHeader for our start date and monthColHeader for our end date.
When I say use monthColHeader I mean like this;-
(r.dbAddDate >= (CAST('@Request.monthColHeader ~' AS DATETIME)) AND r.dbAddDate < DATEADD(mm,1,'@Request.monthColHeader ~'))
This sql works for converting say 'Feb 2015' to '2015-02-01' & '2015-02-28'....
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Apr 12, 2007
Need some quick help here.. The data I got from the text file use the "04/11/2007" date format and the StockDate in MS-SQL use the datetime datatype.
My understanding is that the "04/11/2007" will default to the 04/11/2007 12:00 am" format in MS-SQL.
So, when I use the sql query, how do search only for the date part of the data in MS-SQL and match it to the data from text file? I tried this SQL Query below.
--snip--
SELECT RawID FROM tblPurchaseRaw WHERE VIN = '" & sVin.ToString.Trim & "' AND StockDate = '" & dStockDate.ToString.Trim & "'
--snip--
That way, if I get a row then I know the data is there. If I don't get a row then I know the data is not there.
Bold: I get it now. It is all automatic as MS-SQL does it automatically...
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Jul 13, 2006
The source is a flat file with a column where dates are stored as: 07/12/2006 11:35am. In some cases the column is blank.
I need to import this into a table with a datetime column. In the data flow task, I get the error that conversion b/w String and DB_Timestamp is not allowed. First question is why does SSIS think its a DB_Timestamp column? Shouldnt it be DB_Date or DB_Time. Anyway, when I add a Data Conversion Task in the Data Flow, and cast to the source column to either DB_TimeStamp, DB_Date or DB_Time I get an error.
Please help. What am I doing wrong.
Asim.
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Sep 21, 2006
HiI am using SQL 2005, VB 2005I am trying to insert a record using parameters using the following code as per MotLey suggestion and it works finestring insertSQL; insertSQL = "INSERT INTO Issue(ProjectID, TypeofEntryID, PriorityID ,Title, Area) VALUES (@ProjectID, @TypeofEntryID, @PriorityID ,@Title, @Area)"; cmdInsert SqlCommand; cmdInsert=new SqlCommand(insertSQL,conn); cmdInsert.Parameters.Add("@ProjectID",SqlDbType.Varchar).Value=ProjectID.Text; My query is how to detail with dates my previous code wasinsertSQL += "convert(datetime,'" + DateTime.Now.ToString("dd/MM/yy") + "',3), '";I tried the code below but the record doesn't save?string date = DateTime.Now.ToString("dd/MM/yy"); insertSQL = "INSERT INTO WorkFlow(IssueID, TaskID, TaskDone, Date ,StaffID) VALUES (@IDIssue, @IDTask, @TaskDone, convert(DateTime,@Date,3),@IDStaff)"; cmdInsert.Parameters.Add("IDIssue", SqlDbType.Int).Value = IDIssue.ToString();cmdInsert.Parameters.Add("IDTask",SqlDbType.Int).Value = IDTask.Text;cmdInsert.Parameters.Add("TaskDone",SqlDbType.VarChar).Value = TaskDoneTxtbox.Text;cmdInsert.Parameters.Add("Date",SqlDbType.DateTime).Value = date;cmdInsert.Parameters.Add("IDStaff",SqlDbType.Int).Value = IDStaff.Text;Could someone point to me in the right direction?Thanks in advance
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Jul 13, 2007
I'm moving data between identical tables and have to use a flat file as an intermediary. I thought: "No problem, SSIS can do a quick export to a file, then move the file to another server, then use SSIS to import the data to the new server."
Seems simple, right?
I'm hitting all sorts of surprising data conversion errors. I used the export wizard to create the export package. This works fine. However using the same flat file definition, the import package fails -- even when I have no destination. That is I have just one data flow task that contains only one control: the Flat File source. When I run the package the flat file definition fails with data type conversion and truncation errors. One of the obvious errors is for boolean types. The SQL field is a bit, SSIS defined the column as DT_BOOL, the output of the data are literal text values "TRUE" and "FALSE". So SSIS converts a sql datatype of bit to "TRUE" and "FALSE" on export, but can't make the reverse conversion on import?
Does anyone else find this surprising? I would expect that what SSIS exports, it can import given all the same table and flat file definitions. Is SSIS the wrong tool to do such simple bulk copies? I'd like to avoid using BCP because this process will need to run automatically within SQL Agent so we can leverage all the error tracking and system monitoring.
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Mar 11, 2014
I am inserting date and time data into a SQL Server 2012 Express table from an application. The application is providing the date and time as a string data type. Is there a TSQL way to convert the date and time string to an SQL datetime date type? I want to do the conversion, because SQL displays an error due to the
My date and time string from the application looks like : 3/11/2014 12:57:57 PM
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Dec 26, 2007
Hello,
I have to perform some data manipulation based on ID1, ID2 with respect to Effective dates (below represented as effdt)
Source Code:
create table #source (id1 int, id2 int, effdt datetime)
insert into #source values (111, 123, '1/1/2007')
insert into #source values (111, 123, '3/1/2007')
insert into #source values (111, 123, '4/1/2007')
insert into #source values (111, 124, '5/1/2007')
insert into #source values (111, 125, '6/1/2007')
insert into #source values (111, 123, '7/1/2007')
Source Code Data:
ID1 ID2 Effdt
111 123 1/1/2007
111 123 3/1/2007
111 123 4/1/2007
111 124 5/1/2007
111 125 6/1/2007
111 123 7/1/2007
Target Data should look like:
ID1 ID2 Effdt Expdt
111 123 1/1/2007 4/30/2007
111 124 5/1/2007 5/31/2007
111 125 6/1/2007 6/30/2007
111 123 7/1/2007 7/31/2007
The logic is like the min(effdt) as effdt, min(effdt) - 1 as expdt of the next id2 from the source. Nut the problem comes when the same ID2 comes later after a different id2, so just a group by on id1, id2 does not suffice.
If it is the last record then the expdt is that month's end date.
Can someone throw me some light on what kind of logic I should be using to accomplish this.
Thanks in advance.
Greg
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May 16, 2008
Table1:
Id column1
--------------------
251 a
251 b
251 c
What I need to accomplish:
Table2:
Id column1 column2 column3
--------------------------------------------------------
251 a b c
Using SSIS i need to extract data from table1 and combine records with same id into one record in order to map to my destination table2
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Dec 14, 2005
After testing out the application i write on the local pc. I deploy it to the webserver to test it out. I get this error.
System.Data.SqlClient.SqlException: The conversion of a char data type to a
datetime data type resulted in an out-of-range datetime value.
Notes: all pages that have this error either has a repeater or datagrid which load data when page loading.
At first I thought the problem is with the date, but then I can see
that some other pages that has datagrid ( that has a date field) work
just fine.
anyone having this problem before?? hopefully you guys can help.
Thanks,
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Dec 4, 2006
Is it possible to INSERT, UPDATE, DELETE data in this type of relationship? If so, how in VS2005? Not having issues with SELECT, even without joins.
Thanks
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Apr 9, 2015
I have data in a trace file, and I need to extract some info such as phone number.The problem is the phone number could be varying lengths, and various positions in the row.
For example:
@City='New York', @Phone='2035551212' (10 characters, no dashes)
or
@City='San Francisco', @Phone='918-555-1212' (12 characters, with dashes)
or
@City+'Berlin', @Phone='55-123456-7890' (14 characters, with dashes)
I can use CHARINDEX to search & find @Phone=' so I know where the phone number starts, but stuck on a programatic way to find the data between the quotes since it can vary.
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Oct 9, 2006
Hi
I am wishing to
* take a table of data into a C# CLR procedure and store it in an array
* take a second table of data into this procedure row by row, and return a row (into a third table) for each row (and this returned row is based on the data in the array and the data in this row).
I am new to CLR programming, and pulling my hair out at the moment. I€™m sure that what I€™m trying to do is simple, but I am not making any progress with the on-line help and error messages L. I have now described what I am trying to do in more detail, firstly in English, and then in a T-SQL implementation that works (for this simple example). I€™m looking for the C# CLR code to be returned €“ containing preferably two parts:
* the C# code and
* the CLR code to €˜make it live€™
Since I am not sure where my coding is going wrong. (I think it should be possible to read in the one table, and then loop through thte second table, calculating and returning the necessary output as you do the calculations...
Problem in English
Consider a situation where there are three tables: DATATABLE, PARAMETERTABLE and RESULTSTABLE.
For each row in PARAMETERTABLE, I will calculate a row for RESULTSTABLE based on calculations involving all the entries form DATATABLE.
I am wishing to do this in a C# CLR for performance reasons, and because the functions I will be using will be significantly more complex, and recursively built up.
Consider the following table structures
DATATABLE €“ [i int, datavalue real]
[1,12.5]
[2.10]
[3.14]
[4,17.5]
(where numberofrows is 4)
PARAMETERTABLE [parametera real, paramaterb real]
[10,2]
[11.7,1.1]
RESULTSTABLE [resultvalue real]
[20.5]
[18.26]
The values of the results table are calculated as the
sum (for i = 1 to numberofrows)
of
(Parameter1+i*parameterb-datavalue)^2
Which leads to the values shown.
T-SQL Implementation
-- Set up database and tables to use in example
USE master
GO
CREATE DATABASE QuestionDatabase
GO
sp_configure 'clr enabled', 1
GO
USE QuestionDatabase
GO
RECONFIGURE
GO
CREATE TABLE DataTable (i INT NOT NULL, DataValue REAL NOT NULL)
GO
CREATE TABLE ParameterTable (ParameterNumber INT NOT NULL, ParameterA REAL NOT NULL, ParameterB REAL NOT NULL)
GO
CREATE TABLE ResultsTable (ParameterNumber INT NOT NULL, ResultsValue REAL NOT NULL)
GO
--Initialise the Tables
INSERT INTO DataTable (i, DataValue) VALUES (1,12.5)
INSERT INTO DataTable (i, DataValue) VALUES (2,10)
INSERT INTO DataTable (i, DataValue) VALUES (3,14)
INSERT INTO DataTable (i, DataValue) VALUES (4,17.5)
INSERT INTO ParameterTable (ParameterNumber, ParameterA, ParameterB) VALUES (1, 10, 2)
INSERT INTO ParameterTable (ParameterNumber, ParameterA, ParameterB) VALUES (2, 11.7, 1.1)
-- The TSQL to be rewritten in C#, to produce the Output as hoped
INSERT INTO ResultsTable (ParameterNumber, ResultsValue)
SELECT ParameterNumber, SUM((parametera+i*parameterb-datavalue)*(parametera+i*parameterb-datavalue)) AS b
FROM DataTable
CROSS JOIN
ParameterTable
GROUP BY ParameterNumber
-- Output as hoped
SELECT * FROM DataTable
SELECT * FROM ParameterTable
SELECT * FROM ResultsTable
-- which produced
1 12.5
2 10
3 14
4 17.5
1 10 2
2 11.7 1.1
1 20.5
2 18.26
-- but I hope to do the same with something like:
CREATE ASSEMBLY *** FROM 'C:***.dll'
CREATE PROCEDURE GenerateResultsInCLR(@i int, @r1 real, @r2 real)
RETURNS TABLE (i int, r real)
EXTERNAL NAME ***.***.***
EXEC GenerateResultsInCLR
This is a simple example, that can be easily written in T-SQL. I am looking to develop things that are recursive in nature, which makes them unsuited to T-SQL, unless one is using cursors, but this becomes very slow when the parameter table has 1m records, and the data table 100k records. This is why the datatable must be read in once, and manipulated many times, and the manipulation will need to be in the form of a loop.
Thanks very much for your help.
Go well
Greg
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May 17, 2015
I embedded a SQL query in excel that gets some datetime fields like "TASK_FINISH_DATE"Â .
How can I convert a datetime field to a date field in SQL in a way that excel will recognize it as a date type and not a text type?
I tried:
CONVERT(varchar(8),TASK_FINISH_DATE ,3)
CONVERT(Date,TASK_FINISH_DATE ,3)
CAST(TASK_FINISH_DATE as date)
**all of the above returned text objectes in excel and not date objects.
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Jan 28, 2008
update tblPact_2008_0307 set student_dob = '30/01/1996' where student_rcnumber = 1830when entering update date in format such as ddmmyyyyi know the sql query date format entered should be in mmddyyyy formatis there any way to change the date format entered to ddmmyyyy in sql query?
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Sep 21, 2015
if I do this:
print @@version
print 'arithmetic with datetime'
go
begin try
declare @datetime datetime = getdate()
[Code] ....
... I get this:
Microsoft SQL Server 2008 R2 (SP2) - 10.50.4042.0 (X64)Â
Mar 26 2015 21:18:04Â
Copyright (c) Microsoft Corporation
Express Edition (64-bit) on Windows NT 6.2 <X64> (Build 9200: )
arithmetic with datetime
@datetime = Sep 22 2015 Â 1:39PM
arithmetic with date
Msg 206, Level 16, State 2, Line 3
Operand type clash: date is incompatible with int
Why the inconsistency? Datetime is lenient in this regard - I can even do set @datetime += 0.5 (although the meaning is less intuitive).
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Aug 3, 2015
How can I calculate a DateTime column by merging values from a Date column and only the time part of a DateTime column?
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Apr 19, 2008
Advance thanks ....... My table is TimeSheet:----------------------------------- CREATE TABLE [dbo].[TimeSheet]( [autoid] [int] IDENTITY(1,1) NOT NULL, [UserId] [int] NOT NULL, [starttime] [datetime] NOT NULL, [endtime] [datetime] NOT NULL, [summary] [nvarchar](50) NOT NULL, [description] [nvarchar](50) NULL, [dtOfEntry] [datetime] NOT NULL, [Cancelled] [bit] NULL) ON [PRIMARY] My Query is------------------ insert into timesheet (UserId, StartTime,EndTime, Summary, Description,DtOfEntry) values (2, '19/04/2008 2:05:06 PM', '19/04/2008 2:05:06 PM', '66', '6666','19/04/2008 2:05:06 PM')i m not able to insert value Error Message is-------------------------Msg 242, Level 16, State 3, Line 1The conversion of a char data type to a datetime data type resulted in an out-of-range datetime value.The statement has been terminated. can any body give any solution
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Aug 3, 2005
Hey, I have a big problem that i wanna search data from SQL by DateTime like thatselect * from test where recorddate='MyVariableWhichHoldDate'i use variable that holds Date info.i searched a lot infomation on net but there is no perfect solution. i know why this occur but there is no function to solve this problem. i used a lot of ways. it accept yyyy-mm-dd format but my variable format is dd-mm-yyyyy . is there any function for this problem? and any other solution.thanks for ur attentionregards
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