Solved

Convert VARCHAR value to DATETIME

Posted on 2008-10-14
7
908 Views
Last Modified: 2008-10-15
OK in SQL in a column called "STARTDATE" I a list of values that don't really show DATETIME. I need to convert...

20081018090000 which is 2008= year, 10 = month, 18 - day of month. 090000 = 9am

Is there a way I can convert that in SQL to 10/18/2008 9:00am ?

0
Comment
Question by:jsuttor
7 Comments
 
LVL 3

Author Comment

by:jsuttor
ID: 22717796
all of the values in Column Startdate are in this same format. Sorry if that was not clear in the original post.
0
 
LVL 39

Accepted Solution

by:
BrandonGalderisi earned 350 total points
ID: 22717821
Here you go.

The line that leads with "set @dt = " is what you want, just replace your column name.
declare @dts varchar(20)
     ,@dt datetime
set @dts='20081018090000'
set @dt = convert(datetime, left(@dts,8), 112) + convert(datetime,substring(@dts,9,2)+':'+substring(@dts,11,2)+':'+right(@dts,2),108)
select @dt

Open in new window

0
 
LVL 3

Author Comment

by:jsuttor
ID: 22717872
Ok well maybe I was not clear enough. I need this done in a query. I know the rest of the query. I just need to convert the values that come up in the above format to a datetime.

My query is as follows... just need the STARTDATE converted to datetime

SELECT     Name, Location, Description, StartDate
FROM         dbo.calendarEvents
ORDER BY StartDate DESC
0
Optimizing Cloud Backup for Low Bandwidth

With cloud storage prices going down a growing number of SMBs start to use it for backup storage. Unfortunately, business data volume rarely fits the average Internet speed. This article provides an overview of main Internet speed challenges and reveals backup best practices.

 
LVL 60

Expert Comment

by:chapmandew
ID: 22717901
Brandon was quite clear in his explanation...just as a refresher (NO POINTS please)


select convert(datetime, left(YOURFIELDNAME,8), 112) + convert(datetime,substring(YOURFIELDNAME,9,2)+':'+substring(YOURFIELDNAME,11,2)+':'+right(YOURFIELDNAME,2),108)
FROM YOURTABLENAME
0
 
LVL 2

Expert Comment

by:Deepika_Rastogi
ID: 22719264

Brandon is right

you just have to do this

SELECT     Name, Location, Description, (convert(datetime, left(StartDate ,8), 112) + convert(datetime,substring(StartDate ,9,2)+':'+substring(StartDate ,11,2)+':'+right(StartDate ,2),108)) as Start_Date
FROM  calendarEvents
ORDER BY Start_Date DESC

Hope this helps
Deepika
0
 
LVL 69

Expert Comment

by:Scott Pletcher
ID: 22723475
SELECT CONVERT(CHAR(10), CAST(LEFT(startdate, 8) AS DATETIME), 101) +
    RIGHT(CONVERT(VARCHAR(30), CAST(STUFF(SUBSTRING(startdate, 9, 4), 3, 0, ':') AS DATETIME), 0) , 8)


For example:

SELECT CONVERT(CHAR(10), CAST(LEFT(startdate, 8) AS DATETIME), 101) +
    RIGHT(CONVERT(VARCHAR(30), CAST(STUFF(SUBSTRING(startdate, 9, 4), 3, 0, ':') AS DATETIME), 0) , 8)
FROM (
    SELECT '20081018090000' AS startdate
) AS sampleData
0
 
LVL 69

Assisted Solution

by:Scott Pletcher
Scott Pletcher earned 150 total points
ID: 22723508
[Note that format 108 will give you 24-hr time, not am/pm.]

Also, you may want to add a computed column to the table that does the conversion.  Then you won't have to repeat the code in several different SELECTs, just use a different column name when you want the formatted version.

For example:

ALTER TABLE tablename
ADD startdate_formatted AS CONVERT(CHAR(10), CAST(LEFT(startdate, 8) AS DATETIME), 101) +
    RIGHT(CONVERT(VARCHAR(30), CAST(STUFF(SUBSTRING(startdate, 9, 4), 3, 0, ':') AS DATETIME), 0) , 8)

And, from then on:

SELECT ..., startdate_formatted, ...
FROM tablename
WHERE startdate_formatted >= ...
ORDER BY startdate_formatted
0

Featured Post

Free Tool: SSL Checker

Scans your site and returns information about your SSL implementation and certificate. Helpful for debugging and validating your SSL configuration.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Why is this different from all of the other step by step guides?  Because I make a living as a DBA and not as a writer and I lived through this experience. Defining the name: When I talk to people they say different names on this subject stuff l…
Load balancing is the method of dividing the total amount of work performed by one computer between two or more computers. Its aim is to get more work done in the same amount of time, ensuring that all the users get served faster.
This videos aims to give the viewer a basic demonstration of how a user can query current session information by using the SYS_CONTEXT function
Using examples as well as descriptions, and references to Books Online, show the documentation available for datatypes, explain the available data types and show how data can be passed into and out of variables.

828 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question