Database

31-May-07 5:29

Hi,
I need to convert the DateTime to a date format. I know I have to use Convert, but I don't think I use it right because I'm not getting the expected result.
Here's my scenarion: I want to do a sum for all products in the DB that were bought during a given period of time. My query looks like this

select convert(datetime,convert(char(10),OrderDate,101)), SUM(Qty)
from Orders
where convert(datetime,convert(char(10),OrderDate,101)) between '05/29/05' and '06/10/05'
group by convert(datetime,convert(char(10),OrderDate,101))
order by convert(datetime,convert(char(10),OrderDate,101))

the result looks like this:

OrderDate Qty
2005-05-30 00:00:00.000 1
2005-05-31 00:00:00.000 4

How can I get rid of the 0s at the end of OrderDate?
thanx

kubben31-May-07 5:36

kubben

31-May-07 5:36

You can change your where clause to be:
where OrderDate >= '2005-05-29' and OrderDate <= '2005-06-10 23:59:59'

Hope that helps.
Ben

kozu31-May-07 6:01

31-May-07 6:01

Kubben,
Thanks for the reply, but changing the where clause didn't work. I need to change the 'convert' part of the select in order to alter how the data is being displayed, but to what?

I tried casting it to char, and it partially fixed my problem:

select cast(OrderDate as char(11)), SUM(Qty)
from Orders
where convert(datetime,convert(char(10),OrderDate,101)) between '05/29/05' and '06/10/05'
group by cast(OrderDate as char(11))
order by cast(OrderDate as char(11))

The result is:

Jun 1 2005 2
Jun 2 2005 1
May 30 2005 1

but now the problem is that the ordering will be done alphabetically and not by date.
stuck again Frown | :(

Shahil Shah31-May-07 6:13

Shahil Shah

31-May-07 6:13

Hi
If you are viewing the data in a datagrid you can use the following data formating expression:
{0:dd/MM/yyyy} without the need to use the convert staement you are using

otherwise try this:

SET DATEFORMAT mdy
select CAST(OrderDate as varchar(11)) as OrderDate, SUM(Qty)
where OrderDate between '05/29/05' and '06/10/05'
group by OrderDate
order by OrderDate

Shahil

kozu31-May-07 6:24

31-May-07 6:24

Shahil,
The 'order by' will do the sorting in alphabetical order, since now OrderDate is a string, so I'll get 'June' before 'May'.
I need to be able to still sort by date.

thanx

kozu31-May-07 6:36

31-May-07 6:36

okay,
I think I found a way around this: add a dummy column and sort by that

select cast(OrderDate as char(11)), SUM(Qty),
convert(datetime,convert(char(10),OrderDate,101))
from Orders
where convert(datetime,convert(char(10),OrderDate,101)) between '05/29/05' and '06/10/05'
group by cast(OrderDate as char(11)), convert(datetime,convert(char(10),OrderDate,101))
order by convert(datetime,convert(char(10),OrderDate,101))

Shahil Shah31-May-07 6:38

Shahil Shah

31-May-07 6:38

Hi kozu

try this:

create table #tmp
(
OrderDate datetime,
qty int
)

insert into #tmp(orderdate, qty)
select OrderDate, sum(qty)
from orders
where OrderDate between '05/29/80' and '06/10/05'
group by OrderDate
order by OrderDate

select CAST(OrderDate as varchar(11)) as OrderDate, Qty
from #tmp

DROP TABLE #tmp

Shahil

Please Heeelp - connection error driving me crazy

Michael Potter31-May-07 9:45

Michael Potter

31-May-07 9:45

Form your result set then use it as the source for the final query where you can format your data.

SELECT
    CONVERT(VARCHAR(20),OrderDate,101) AS OrderDate,
    TotalQty
FROM
    (
        SELECT  
            CAST(CONVERT(VARCHAR(20),OrderDate,101) AS DATETIME) AS OrderDate, 
            SUM(Qty) AS TotalQty
        FROM 
            Orders
        WHERE 
            CAST(CONVERT(VARCHAR(20),OrderDate,101) AS DATETIME) between '05/29/05' and '06/10/05'
        GROUP BY 
            CAST(CONVERT(VARCHAR(20),OrderDate,101) AS DATETIME)
    ) AS subqry
ORDER BY 
    OrderDate

Speed wise, I think kubben is correct. I would remove the CAST/CONVERT in the WHERE clause of the subquery with a little intelligent manipulation of the date ranges.

ComCoderCsharp31-May-07 4:11

ComCoderCsharp

31-May-07 4:11

Hi guys

I'm working in Visual studio on a website and using ADO.NET to connect to my pubs sql-database. I keep on getting error messages when I test the website in my browser. Is there anyone who can tell me what could be wrong - I've been through all the configurations steps e.g setting the remote connections... at least I think so...

I've gotten error messages like "login failure" and "The user is not associated with a trusted SQL Server connection" what might be wrong???????????

The strange thing is that if I chooe e.g. a gridview from the toolbox there is no problem at all for this autogenerated gridview to connect to the server - how can this be? - I've tried to use the autogenerated connection string from the toolbox gridview, but that doesn't seem to help...

her is some connection string that I have tried out
string CONN_STRING = "Server=.\\SQLEXPRESS;Initial Catalog=pubs;Integrated Security=SSPI";
or
string CONN_STRING = "Server=.\\SQLEXPRESS;Initial Catalog=pubs;uid=sa;pwd=";

please someone help me...

All the best
Al

Re: Please Heeelp - connection error driving me crazy

Colin Angus Mackay31-May-07 4:17

Re: Please Heeelp - connection error driving me crazy

31-May-07 4:17

ComCoderCsharp wrote:
how can this be?

Because Visual Studio is running in your account. The web application is running in the ASPNET account - You have to tell SQL Server about this by adding ASPNET as a windows authenticated login and giving it permission to use the appropriate database.

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ComCoderCsharp31-May-07 5:07

ComCoderCsharp

31-May-07 5:07

Hi thanks for the reply

Maybe this could be the solution.. but it leads me to another question: How do I add windows authenticated login and give permission to the appropriate database, I can't seem to figure it out...sorry if this is a stupid question, I'm kind of new to configuring the database connections...

Thanks in advance
Al

Re: Please Heeelp - connection error driving me crazy

Colin Angus Mackay31-May-07 8:13

How to check if a field already exists in a table

31-May-07 8:13

In SQL Server 2000 use the Enterprise manage. In the security tab for the server you can add the log in. In the users tab for the individual database you can then set up access to the database and the objects it contains.

In SQL Server 2005 there will be a similar mechanism in the SQL Server Management Studio.

SWDevil31-May-07 3:13

SWDevil

31-May-07 3:13

Hi,

I need to check if a field exists in a certain table (in an SQL database), and if not then add that field to the table.
For Instance I have Table "A" that should contain field "a". So I want to check if field a is already defined for the table, and if not then add it.
How can I d o this? Is there an SQL statement to check if a field exists?

Thanks

Re: How to check if a field already exists in a table

Colin Angus Mackay31-May-07 4:14

Re: How to check if a field already exists in a table

31-May-07 4:14

SWDevil wrote:
Is there an SQL statement to check if a field exists?

IF NOT EXISTS(SELECT * FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = 'MyTableName' AND COLUMN_NAME = 'MyColumnName')
BEGIN
ALTER TABLE ....
END

SWDevil31-May-07 5:12

SWDevil

31-May-07 5:12

If I need to add more than one fields can I write than one ALTER statements:

IF NOT EXISTS(SELECT * FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = 'MyTableName' AND COLUMN_NAME = 'MyColumnName')
BEGIN
ALTER TABLE ....
ALTER TABLE ...
ALTER TABLE ...
ALTER TABLE ...
END

Re: How to check if a field already exists in a table

Colin Angus Mackay31-May-07 8:14