Database Discussion Boards

Re: Writing A Database As Back-End For Application Developed By Others

phil241521-Aug-14 5:37

21-Aug-14 5:37

Thanks for the advice. I'm already devising the data model for the database. My idea is that before the developers even arrive, the bulk of the database will be written and SPs in place for handling fundamental operations. I've no doubt that changes will need to be made once the development team starts, but hopefully the basic foundations should be fairly sound.

Re: Writing A Database As Back-End For Application Developed By Others

PIEBALDconsult21-Aug-14 5:11

PIEBALDconsult

21-Aug-14 5:11

I agree with developing up through the Web Service part as an API so the application developers don't need to even know there's a database involved.

<YouProbablyAlreadyKnowThis>
Be sure that at the API level the methods are written as high-level application operations, rather than as specific database operations.
E.g. if a transaction requires two INSERTs and an UPDATE, those details should be hidden in one method rather than requiring the application developers to know that they need to call three methods and in what order.
</YouProbablyAlreadyKnowThis>

Re: Writing A Database As Back-End For Application Developed By Others

phil241521-Aug-14 5:20

phil2415

21-Aug-14 5:20

Love the <youprobablyalreadyknowthis> tag, I might have to steal that some time! All the more pleased with it given that I actually did know it!

(Expiring Next Month) Problem

Jassim Rahma11-Aug-14 21:45

Jassim Rahma

11-Aug-14 21:45

Hi,

I have expiry_date field. I am using nthis code to get expired this month list.

SQL

SELECT contracts.contract_id, contract_types.type_name, contracts.contract_name, contracts.supplier, contracts.contact_name, contracts.contact_number, contracts.expiry_date, contracts.reminder FROM contracts
JOIN contract_types ON contract_types.type_id = contracts.type
WHERE MONTH(contracts.expiry_date) = MONTH(NOW()) AND YEAR(contracts.expiry_date) = YEAR(NOW());

Now, I would like to get list of expiring next month. How can I do this? what if current month is 12? then Next Month will be 1 and Year will also be changed?

Kindly advise

Technology News @ www.JassimRahma.com

Re: (Expiring Next Month) Problem

Kornfeld Eliyahu Peter11-Aug-14 21:58

Kornfeld Eliyahu Peter

11-Aug-14 21:58

SQL

WHERE MONTH(contracts.expiry_date) = DATE_ADD(MONTH(NOW()), INTERVAL 1 MONTH)

http://dev.mysql.com/doc/refman/5.5/en/date-and-time-functions.html[^]

I'm not questioning your powers of observation; I'm merely remarking upon the paradox of asking a masked man who he is. (V)

Re: (Expiring Next Month) Problem

Jassim Rahma11-Aug-14 23:40

Jassim Rahma

11-Aug-14 23:40

this solved my problem.

SQL

WHERE MONTH(contracts.expiry_date) = MONTH(DATE_ADD(DATE(NOW()), INTERVAL 1 MONTH)) AND YEAR(contracts.expiry_date) = YEAR(DATE_ADD(DATE(NOW()), INTERVAL 1 MONTH));

Thank you so much

Technology News @ www.JassimRahma.com

Re: (Expiring Next Month) Problem

GuyThiebaut12-Aug-14 1:42

GuyThiebaut

12-Aug-14 1:42

This may be easier to read and you won't need to do calculations on years:

WHERE DATEDIFF(mm,contracts.expiry_date,DATE_ADD(NOW(), INTERVAL 1 MONTH)) = 1

“That which can be asserted without evidence, can be dismissed without evidence.”

― Christopher Hitchens

Re: (Expiring Next Month) Problem

Bernhard Hiller12-Aug-14 21:28

Bernhard Hiller

12-Aug-14 21:28

Hm, depends on the details of his requirements.
If I see it correctly, your query will select all data within one month from now. His question looked like he needed the data of next calendar month.

Re: (Expiring Next Month) Problem

GuyThiebaut12-Aug-14 21:45

GuyThiebaut

12-Aug-14 21:45

Try the query out - you will find that it selects the data from next calendar month Wink | ;)

“That which can be asserted without evidence, can be dismissed without evidence.”

― Christopher Hitchens

modified 13-Aug-14 5:22am.

Re: (Expiring Next Month) Problem

GuyThiebaut11-Aug-14 22:07

GuyThiebaut

11-Aug-14 22:07

Have a look at the DATEDIFF function.

E.g.

select datediff(mm,getdate(),getdate()+180)

“That which can be asserted without evidence, can be dismissed without evidence.”

― Christopher Hitchens

modified 12-Aug-14 4:15am.

T-Sql Distribute data into groups based on existing numbers

dreaddan10111-Aug-14 10:42

dreaddan101

11-Aug-14 10:42

Hi, i've been looking at moving one of our processed from excel (+vba) into t-sql to make life easier but am stuck.

We have lots of tasks that are assigned to work groups which we want to distribute evenly across the work groups. This is a simple task for ntile.. However when these tasks are no longer required they are removed which leaves the groups uneven. When new tasks are added we want to still try to keep these groups balanced.

EG Existing groups :

GroupName - Task Count
Group1 - 1000
Group2 - 999
Group3 - 998

If we were to add 6 new tasks they would have more assigned to Group 2 & 3 as they have less than group 1.

Task 1 - Group3
Task 2 - Group3
Task 3  -Group2
Task 4 - Group1
Task 5 - Group2
Task 6 - Group3

Sample tables

SQL

Create table GroupTable
(GroupID int, Name varchar(200) )
Insert into GroupTable values (1,'Group1')
Insert into GroupTable values (2,'Group2')
Insert into GroupTable values (3,'Group3')


Create table Jobs(jobid int identity(1,1), name varchar(100),Groupid int)
--Existing tasks
Insert into Jobs(name,Groupid) values ('Task1',1)
Insert into Jobs(name,Groupid) values ('Task2',1)
Insert into Jobs(name,Groupid) values ('Task3',1)
Insert into Jobs(name,Groupid) values ('Task4',1)
Insert into Jobs(name,Groupid) values ('Task5',2)
Insert into Jobs(name,Groupid) values ('Task6',2)
Insert into Jobs(name,Groupid) values ('Task6',2)
Insert into Jobs(name,Groupid) values ('Task7',3)

-- New tasks
Insert into Jobs(name) values ('TaskA')
Insert into Jobs(name) values ('TaskB')
Insert into Jobs(name) values ('TaskC')
Insert into Jobs(name) values ('TaskD')
Insert into Jobs(name) values ('TaskE')
Insert into Jobs(name) values ('TaskF')

This gives us 6 unassigned tasks and a uneven group assignment

SQL

GROUPNAME   TASK_COUNT
<none>      6
Group1      4
Group2      3
Group3      2

This means the new tasks will be assigned like this

TaskA - Group3
TaskB - Group3
TaskC - Group2
TaskD - Group1
TaskE - Group2
TaskF - Group3

Can anyone help?
Thanks
Dan

Re: T-Sql Distribute data into groups based on existing numbers

Jörgen Andersson13-Aug-14 22:44

Jörgen Andersson

13-Aug-14 22:44

Insert new tasks like this:

SQL

insert into jobs
select  top(1)
        @TaskName,
        groupid
from    jobs
group by groupid
order by count(*),groupid

Wrong is evil and must be defeated. - Jeff Ello[^]

Problem with Decimal Places and Rounding off

Vimalsoft(Pty) Ltd9-Aug-14 23:02

Vimalsoft(Pty) Ltd

9-Aug-14 23:02

Good Day All

i have a Following Query

1) Query 1

SQL

 DECLARE @FINALVAUE VARCHAR(MAX) =   (Convert(decimal,@CAUSATIVE_FACTORS_ID) - 1) +   Convert(decimal,@LU_PERCENTAGE_FAILURE_IN_SAMPLE_ID) + Convert(decimal,@LU_REPORTING_HISTORY_ID)  
PRINT @FINALVAUE -- the answer is 3

The Calculation is like this

2) Query 2

SQL

 DECLARE @FINAL VARCHAR(MAX) 
SET  @FINAL=  (4-1) + 0.08 + 0.2
SELECT @FINAL -- the asnwer is 3.28

The first Query i am retrieving values from the Variables which are varchar and converting to decimal and doing the calculations. and the second Query i am just taking the value as is. i used this to debug in trying to solve this problem. My problem here in the first Query in the @FINALVAUE variable the answer is "3" and in the second Query the answer is "3.28"
, i want the first Query to display the same value which is "3.28"

Thanks

Vuyiswa Maseko,

Spoted in Daniweb-- Sorry to rant. I hate websites. They are just wierd. They don't behave like normal code.

C#/VB.NET/ASP.NET/SQL7/2000/2005/2008
http://www.vuyiswamaseko.com
vuyiswa[at]dotnetfunda.com
http://www.Dotnetfunda.com

Re: Problem with Decimal Places and Rounding off

Kornfeld Eliyahu Peter10-Aug-14 0:00

Kornfeld Eliyahu Peter

10-Aug-14 0:00

CONVERT(DECIMAL, value) will convert without decimal palces Smile | :)

...
Use something like CONVERT(DECIMAL(4, 2), value)...
http://msdn.microsoft.com/en-us/library/ms187746.aspx[^]

I'm not questioning your powers of observation; I'm merely remarking upon the paradox of asking a masked man who he is. (V)

Re: Problem with Decimal Places and Rounding off

Vimalsoft(Pty) Ltd10-Aug-14 1:28

Vimalsoft(Pty) Ltd

10-Aug-14 1:28

Thanks that saved the day.

Select and Update

jkirkerx8-Aug-14 11:43

jkirkerx

8-Aug-14 11:43

I'm trying to consolidate 3 operations into 1
Not sure if it's possible, but it's seems like it is.

I want to select some data, and take the data from 1 table and update it to another table.

Her's what I have. It's kind of a soup at the moment, experienenting with different ideas.
In my Create Table, I can't figure out how to use those value in the update in place of the parameters.
Perhaps I should just use the line in Update, the select for CardLabel.

DECLARE @CardID INT;
SET @CardID = 645;
CREATE TABLE #CCInfo
(
   Label VarChar(40) 
 , CardBrand VarChar(80) 
 , CardExpMonth VarChar(80)
 , CardExpYear VarChar(80)
 , CardHolder_FirstName VarChar(80)
 , CardHolder_LastName VarChar(80)
 , CardNum VarChar(80)
 , CardPhoneNum VarChar(20)
)
 INSERT INTO #CCInfo
 (
   Label
 , CardBrand
 , CardExpMonth
 , CardExpYear
 , CardHolder_FirstName
 , CardHolder_LastName
 , CardNum
 , CardPhoneNum
 )
 SELECT 
  Label 
, CardBrand 
, CardExpMonth 
, CardExpYear 
, CardHolder_FirstName 
, CardHolder_LastName 
, CardNum 
, CardPhoneNum 
 FROM CardInfoPerm  
 WHERE CardID=@CardID
 UPDATE
  OrderInfo
  SET
    CardID=@CardID
  , Cardlabel= (SELECT Label FROM CardInfoPerm WHERE CardID=@CardID)
  , CardBrand=Card_
  , CardExpMonth=@CardExpMonth
  , CardExpYear=@CardExpYear
  , CardHolder_FirstName=@CardHolder_FirstName
  , CardHolder_LastName=@CardHolder_LastName
  , CardNum=@CardNum
  , CardPhoneNum=@CardPhoneNum
  , PaymentInfo=@CardID
  , ApprovalCode=''
  , AuthorizationID=''
  , CheckID=''
  , CheckLabel=''
  , CheckType=''
  , CheckName=''
  , BankName=''
  , CheckRoutingNum=''
  , CheckAccountNum=''
  WHERE OrderNum='CA-2054'

My none soup version

jkirkerx8-Aug-14 12:11

jkirkerx

8-Aug-14 12:11

Here I get must declare the scalar @CCInfo in the UPDATE Section
I understand what it means, I just don't know how to go about getting the scalar to be recognized in Update.
The first part works, just having trouble with the update.

DECLARE @CardID INT, @OrderNumber VarChar(40);
SET @CardID = 645;
SET @OrderNumber = 'CA-2054';

DECLARE @CCInfo TABLE
(
   Label VarChar(40) 
 , CardBrand VarChar(80) 
 , CardExpMonth VarChar(80)
 , CardExpYear VarChar(80)
 , CardHolder_FirstName VarChar(80)
 , CardHolder_LastName VarChar(80)
 , CardNum VarChar(80)
 , CardPhoneNum VarChar(20)
);

 INSERT @CCInfo
 (
   Label
 , CardBrand
 , CardExpMonth
 , CardExpYear
 , CardHolder_FirstName
 , CardHolder_LastName
 , CardNum
 , CardPhoneNum
 )
 SELECT 
  Label 
, CardBrand 
, CardExpMonth 
, CardExpYear 
, CardHolder_FirstName 
, CardHolder_LastName 
, CardNum 
, CardPhoneNum 
 FROM CardInfoPerm  
 WHERE CardID=@CardID
 
 UPDATE
  OrderInfo
  SET
    CardID=@CardID
  , Cardlabel=@CCInfo.Label
  , CardBrand=@CCInfo.CardBrand
  , CardExpMonth=@CCInfo.CardExpMonth
  , CardExpYear=@CCInfo.CardExpYear
  , CardHolder_FirstName=@CCInfo.CardHolder_FirstName
  , CardHolder_LastName=@CCInfo.CardHolder_LastName
  , CardNum=@CCInfo.CardNum
  , CardPhoneNum=@CCInfo.CardPhoneNum
  , PaymentInfo=@CardID
  , ApprovalCode=''
  , AuthorizationID=''
  , CheckID=''
  , CheckLabel=''
  , CheckType=''
  , CheckName=''
  , BankName=''
  , CheckRoutingNum=''
  , CheckAccountNum=''
  WHERE OrderNum=@OrderNumber

Re: Select and Update

PIEBALDconsult8-Aug-14 20:57

PIEBALDconsult

8-Aug-14 20:57

Separate the statements with semicolons?

[Solved]

jkirkerx10-Aug-14 12:50

jkirkerx

10-Aug-14 12:50

I went for the later in this function, but found out later that I could of just declared and set all the card data first
and then run the UPDATE using the variables.

So I ended up with this, I shortened it to keep it more brief

UPDATE " & _
OrderInfo " & _
SET
  CardID=@CardID
, Cardlabel=(SELECT Label FROM CardInfoPerm WHERE CardID=@CardID)
, CardBrand=(SELECT CardBrand FROM CardInfoPerm WHERE CardID=@CardID)
, CardExpMonth=(SELECT CardExpMonth FROM CardInfoPerm WHERE CardID=@CardID)
, CardExpYear=(SELECT CardExpYear FROM CardInfoPerm WHERE CardID=@CardID)
WHERE OrderNum=@OrderNum"

But later the next day I ended up writing something that does everything in one shot, far beyond I could imagine that I can do. So I modified the above to this below

DECLARE " & _
@CardLabel VarChar(80)
, @CardBrand VarChar(80)
, @CardExpMonth VarChar(80)
, @CardExpYear VarChar(80)
, @New_OrderNumber VarChar(80);

SET @CardLabel = (SELECT Label FROM CardInfoPerm WHERE CardID=@CardID);
SET @CardBrand = (SELECT CardBrand FROM CardInfoPerm WHERE CardID=@CardID);
SET @CardExpMonth = (SELECT CardExpMonth FROM CardInfoPerm WHERE CardID=@CardID);
SET @CardExpYear = (SELECT CardExpYear FROM CardInfoPerm WHERE CardID=@CardID);

IF EXISTS(SELECT * FROM OrderInfo WHERE OrderNum=@OrderNum)
 BEGIN
  UPDATE
 END
ELSE
 BEGIN
  INSERT
 END

Then, I was able to do more,
delete previous cart items,
generate a new order number,
copy the cart contents over
return the new order number
all in one shot now, use to take me like 8 functions to do it all. I'm amazed at how fast it runs now.

I would post it, but it's too large

I'm stoked on how it came out, and learned a lot on my own. I think I got the semi-colons right this time, I need to read up on that.

Re: Select and Update

MeutherOlaf11-Aug-14 20:36

MeutherOlaf

11-Aug-14 20:36

The Select-Statement have to run into a variable. For all recorset in the variable you have to carry out the update statement

Weird problem with UNION query in Access 2010

Peter R. Fletcher8-Aug-14 3:46

Peter R. Fletcher

8-Aug-14 3:46

I have created a UNION query as the source for a report that is written to a Word Document using VBA. The UNION joins a Table (historical information from before the current database Application was written) and the output of a Query that extracts corresponding information from the live data. I have recently added a new text field to both 'sides'. The value of the text field for the Query (either "S" or "") is generated in an IIF() statement within it.

When I Open the UNION query via the Access interface, it works as intended - the new text field is set to the correct value for records derived from either source. When I open a ADO Recordset based on the UNION query in VBA, the records derived from the Table are correct, but the contents of the new field in the records derived from the Query is always a Null String (N.B. not Null). If I convert the Query which is the second source of the UNION into a Make Table Query, run it, and then UNION the two Tables, everything again works as it should. Does this make any sense to anyone?

Find the right SSMS

Corporal Agarn8-Aug-14 1:53

Corporal Agarn

8-Aug-14 1:53

Hello, I would like to try either SSMS 2012 or SSMS 2014. However I would like to keep my SQL Server 2008R2 instance.

First what is your suggestion on downloading? I hear there are changes for 2014 that make it very different.

If I download SQL Server Express will it install an instance or can I choose to just install SSMS. Is there a download just for SSMS.

Thank you,

Re: Find the right SSMS

Richard Deeming8-Aug-14 2:18

Richard Deeming

8-Aug-14 2:18

There are various downloads available for SQL Express, including one that's just SSMS.

2014 Management Studio:
- 64-bit: http://download.microsoft.com/download/E/A/E/EAE6F7FC-767A-4038-A954-49B8B05D04EB/MgmtStudio%2064BIT/SQLManagementStudio_x64_ENU.exe[^]
- 32-bit: http://download.microsoft.com/download/E/A/E/EAE6F7FC-767A-4038-A954-49B8B05D04EB/MgmtStudio%2032BIT/SQLManagementStudio_x86_ENU.exe[^]
2012 Management Studio:
- 64-bit: http://download.microsoft.com/download/8/D/D/8DD7BDBA-CEF7-4D8E-8C16-D9F69527F909/ENU/x64/SQLManagementStudio_x64_ENU.exe[^]
- 32-bit: http://download.microsoft.com/download/8/D/D/8DD7BDBA-CEF7-4D8E-8C16-D9F69527F909/ENU/x86/SQLManagementStudio_x86_ENU.exe[^]
2008 R2 Management Studio:
- 64-bit: http://download.microsoft.com/download/0/4/B/04BE03CD-EAF3-4797-9D8D-2E08E316C998/SQLManagementStudio_x64_ENU.exe[^]
- 32-bit: http://download.microsoft.com/download/0/4/B/04BE03CD-EAF3-4797-9D8D-2E08E316C998/SQLManagementStudio_x86_ENU.exe[^]

You can get a reasonably complete list at: http://downloadsqlserverexpress.com/[^]

"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer

Re: Find the right SSMS

Corporal Agarn8-Aug-14 2:25

Corporal Agarn

8-Aug-14 2:25

Thank you, I seem to find the wrong download (full instance) when I look.

sql server insert into select + in select part if else

Karan_TN7-Aug-14 0:16

Karan_TN

7-Aug-14 0:16

How to execute the below piece of code correctly. Please help me.

SQL

INSERT INTO #TempTable
            (PatchAppId, PatchName,HostName)

            if (@Id = 0)
            BEGIN
            SELECT PatchAppId, PatchName,HostName FROM Vw_ProductionAutoMailData1
            where Criticality=@Criticality
            end
            else
            begin
            SELECT PatchAppId, PatchName,HostName FROM Vw_ProductionAutoMailData2
            where ServerTypeName=@ServerTypeName
            end

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