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Hi All,
In DB2, i have used XMLAGG built in function in order to convert Rows to Column String Concatenation. Since lot of records are available in the table, performance wise it was too slow. Whether any user defined function is available for DB2 for string concatenation.
Thanks in Advance.
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EmpID Leave_Year Taken Credit Balance
435 2014 0 22 22
435 2013 10 22 12
435 2012 24 22 0
435 2011 20 22 2
435 2010 23 22 0
435 2009 21 22 1
I want to Update this table Balance column value with the Next row Balance column value
eg: Leave_Year 2011, Balance value (2) Update with Leave_Year 2012 Balance Value (0)
0 - 2 = -2 should get in 2011 Balance column, use with this where condition, where Next row (2012) Taken>0
How to write Update sql for this
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Can you explain more in details your case?
I Love T-SQL
"VB.NET is developed with C#.NET"
If my post helps you kindly save my time by voting my post.
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Hi,
Check the Script
SELECT M.ID,(ROW_NUMBER() OVER(PARTITION BY M.EmpID ORDER BY M.EmpID)) 'RowNumber', M.EmpID, M.Leave_Year, M.Taken, M.Credit,
(SELECT SUM((ISNULL(Balance,0.0))
FROM Table_Name WHERE ID<=M.ID AND EmpID=M.EmpID)
FROM Table_Name M
ORDER BY M.EmpID
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I wouldn't do that. It's against the "Rules" of normalization. You don't want to make a row dependant on another row in the same table.
Think of all the fuzz to update the table when you find out someone inserted some wrong data last year, or when HR decides to change the rules (quite probable actually).
So you should make a query that gets you the result you want instead.
Hint, checkout ROLLUP.
For example:
SELECT EmpID,
CASE WHEN (GROUPING(Leave_Year) = 1) THEN 'Total Balance'
ELSE ISNULL(Leave_Year, 'UNKNOWN')
END AS Leave_Year,
SUM(Balance) AS Balance
FROM MyTable
GROUP BY EmpID, Leave_Year WITH ROLLUP
I haven't tested this code, but it should give you an idea.
I also assumed SQLServer, Different Databases have different syntax. Use Google.
Be excellent to each other. And... PARTY ON, DUDES!
Abraham Lincoln
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Several screens (or one very functional one) to view the data in a variety of ways like by Phase, by ESXHost, by Application.
I think if we have several drop downs for filtering then that would work; so I can choose Phase 1, to show only the databases that will be migrated in Phase 1, then I can choose some other criteria and the screen shows a subset of data etc.
3. The Pre-requisites and Post-Migration checks should show whether the Phase or database migration is ready to start or is ok to complete.
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Dear all,
I require your opinion on what approach is good and/or practical for the following scenario.
There is a web application which queries data from SQL server.
For example:
Users report to a manager
1. The process by clicking a button is finding who reports to me (manager)
2. So there is a stored procedure written to find the users reporting to the manager
Now, there is a report (rdlc on the web server displayed via reportviewer control) which takes the manager as an input to generate report data for the staff members reporting to that manager.
The stored procedure for this report uses existing stored procedure (as in step 2 above) to find the staff members reporting to the manager and then generate required data.
My question is:
1. Is this the right way of doing this
2. Is there a need to develop a separate SQL view just for this report
3. What would be the best approach on doing this.
Please help.
Thanks
Regards,
Nayan
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I don't see any issues with this approach, the dedicated view may be useful if reconciliation is required or you are going to use an OLAP system but not for you current requirements.
Never underestimate the power of human stupidity
RAH
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Thank you very much.
I just needed a clarification for not under-estimating my decision over my superior.
Thank you very much.
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Hi all. I have run into a problem with inserting values into table.
I have 2 tables: PUBLISHER with fields: PUBLISHER_CODE (Primary Key) and PUBLISHER_NAME. BOOK table fields: PUBLISHER_CODE (Primary Key and Foreign key to PUBLISHER table) and TITLE.
The user enters bookCode and publisherName into 2 textboxes
Here is the code for inserting:
"INSERT INTO BOOK (TITLE) VALUES(@bookCode)";
"INSERT INTO PUBLISHER (PUBLISHER_NAME) VALUES(@publisherName)";
When running programme, the PUBLISHER table generates a new PUBLISHER_CODE (Primary Key) and publisherName inserted.
Now problem is for the BOOK table the following error appears:
"Cannot insert the value NULL into column 'PUBLISHER_CODE'", table BOOK 
Why is this happening? Doesnt BOOK generate same/new PUBLISHER_CODE from PUBLISHER table since its a foreign key?
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Member 9912091 wrote: Doesnt BOOK generate same/new PUBLISHER_CODE from PUBLISHER table since its a foreign key?
No - you have to retrieve it from the inserted publisher record. I use a stored proc for this and return the new record after it is inserted, then you can use that ID to insert the book record.
Or
Wrap the whole thing in a SQL Transaction in a stored proc and do the insert to both table at once.
Never underestimate the power of human stupidity
RAH
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Primary key value cant be null. You have to provide any value for that.
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Bikash Prakash Dash wrote: You have to provide any value for that
No you have to provide the correct key, any key will corrupt your data.
Never underestimate the power of human stupidity
RAH
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Hi all. I am busy writing a program, in Microsoft Visual Web Developer, and have a database was several tables. The one I am focusing on now is the ACCOUNT table. This table contains username, password and email column.
I want to compare a username entered into a textbox with the existing usernames in the ACCOUNT table, so that I can create a message saying that the entered user already exists.
I know how to do this in C# with if statements, but am really unsure with SQL, since not sure how to use it with SELECT.Thanks
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Member 9912091 wrote: I want to compare a username entered into a textbox with the existing usernames in the ACCOUNT table
SELECT 1
FROM Account
WHERE Username = @Username Returns 1 of the username exists 
Bastard Programmer from Hell 
If you can't read my code, try converting it here[^]
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Thanks!
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Yeah, what Eddy said. But, provided you have a unique index on the column (and you should), it may be more efficient simply to try the INSERT and catch the exception -- you have to do that anyway.
modified 11-May-13 13:36pm.
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Instead of using 1 in Eddys query use count(*), this will tell you how many records match the name.
You should study database design as you may run into some of the basic errors made by newbies. Primary keys and unique constraints.
Never underestimate the power of human stupidity
RAH
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Hi All,
If any one tell me by which i can transfer table from one sql server database to another sql server database.
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Hi all. I am using Microsoft SQL Server 2008 Management Studio. I have been trying to create a database (containing tables etc) from a query file (Delivery.sql).
In the Object explorer I right-clicked Database folder and created the "Delivery database". I then clicked New Query and pasted the contents of Delivery.sql (from notepad) into the new query.
Now when I execute this code, it says it has completed successfully, but in the Object Explorer the "Delivery database" does not contain any tables . I am confused and am in need of help . Thanks.
Here is the image of the object explorer: http://imageshack.us/a/img694/7558/sqlobjectexplorerp.png[^]
Here is the code of the query file (Delivery.sql):
USE [Delivery database]
GO
CREATE DATABASE [Delivery] ON PRIMARY
( NAME = N'Delivery', FILENAME = N'C:\Program Files\Microsoft SQL Server\MSSQL10.SQLEXPRESS\MSSQL\DATA\Delivery.mdf' , SIZE = 3072KB , MAXSIZE = UNLIMITED, FILEGROWTH = 1024KB )
LOG ON
( NAME = N'Delivery_log', FILENAME = N'C:\Program Files\Microsoft SQL Server\MSSQL10.SQLEXPRESS\MSSQL\DATA\Delivery_log.ldf' , SIZE = 1024KB , MAXSIZE = 2048GB , FILEGROWTH = 10%)
GO
ALTER DATABASE [Delivery] SET COMPATIBILITY_LEVEL = 100
GO
IF (1 = FULLTEXTSERVICEPROPERTY('IsFullTextInstalled'))
begin
EXEC [Delivery database].[dbo].[sp_fulltext_database] @action = 'enable'
end
GO
ALTER DATABASE [Delivery] SET ANSI_NULL_DEFAULT OFF
GO
ALTER DATABASE [Delivery] SET ANSI_NULLS OFF
GO
ALTER DATABASE [Delivery] SET ANSI_PADDING OFF
GO
ALTER DATABASE [Delivery] SET ANSI_WARNINGS OFF
GO
ALTER DATABASE [Delivery] SET ARITHABORT OFF
GO
ALTER DATABASE [Delivery] SET AUTO_CLOSE OFF
GO
ALTER DATABASE [Delivery] SET AUTO_CREATE_STATISTICS ON
GO
ALTER DATABASE [Delivery] SET AUTO_SHRINK OFF
GO
ALTER DATABASE [Delivery] SET AUTO_UPDATE_STATISTICS ON
GO
ALTER DATABASE [Delivery] SET CURSOR_CLOSE_ON_COMMIT OFF
GO
ALTER DATABASE [Delivery] SET CURSOR_DEFAULT GLOBAL
GO
ALTER DATABASE [Delivery] SET CONCAT_NULL_YIELDS_NULL OFF
GO
ALTER DATABASE [Delivery] SET NUMERIC_ROUNDABORT OFF
GO
ALTER DATABASE [Delivery] SET QUOTED_IDENTIFIER OFF
GO
ALTER DATABASE [Delivery] SET RECURSIVE_TRIGGERS OFF
GO
ALTER DATABASE [Delivery] SET DISABLE_BROKER
GO
ALTER DATABASE [Delivery] SET AUTO_UPDATE_STATISTICS_ASYNC OFF
GO
ALTER DATABASE [Delivery] SET DATE_CORRELATION_OPTIMIZATION OFF
GO
ALTER DATABASE [Delivery] SET TRUSTWORTHY OFF
GO
ALTER DATABASE [Delivery] SET ALLOW_SNAPSHOT_ISOLATION OFF
GO
ALTER DATABASE [Delivery] SET PARAMETERIZATION SIMPLE
GO
ALTER DATABASE [Delivery] SET READ_COMMITTED_SNAPSHOT OFF
GO
ALTER DATABASE [Delivery] SET HONOR_BROKER_PRIORITY OFF
GO
ALTER DATABASE [Delivery] SET READ_WRITE
GO
ALTER DATABASE [Delivery] SET RECOVERY SIMPLE
GO
ALTER DATABASE [Delivery] SET MULTI_USER
GO
ALTER DATABASE [Delivery] SET PAGE_VERIFY CHECKSUM
GO
ALTER DATABASE [Delivery] SET DB_CHAINING OFF
GO
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Did you refresh the Object Explorer after creation?
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Yeah it didnt work. However I realised that this script didnt have any code to create tables so I used a different script with "CREATE TABLE" code in the query and it worked! thanks
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Hi there, I just want to get some opinions on which tool to use to diagram an ER Picture of a DB model having approx 900 tables, but ....
I have tried a few (Erwin, Aqua Data Studio, Powerdesigner and a few more - even tried Visio). All have problems because I just have the tables - no modelled relations (a pretty bad model but that's the fact). A few PK's almost no FK's. All this is in the code layer or even in the head of the developer only. I want to put all this together to graficaly illustrate our data structure.
What I need to get this job done is
- reverse engineer to have a starting Point (Oracle 11 and MSSQL2008) to have all tables in this tool (on a hidden layer if possible)
- Select some tables and copy them (link) to a new layer to switch visibility depending on the development task that i want to give to a developer
- Display compact (square with table Name, and PKs only). Hide all other columns
- a good way to arrange everything on Screen to avoid crossing Relations and to nicely arrange every table and relation
- toggle visibility of a layer
- a certain table appears on more than one layer depending on the development tasks
- something that makes it all "nice" to present to the Boss.
- crow feet Notation
I more search a documentation type of drawing tool rather than a physical modelling. Some of the tested tools started with creating "alter table add column" scripts that immediately change my DB. This is something I dont need.
Any idea out there?
Any tools avail that accomplish this task?
Thanks a lot in advance
Ole
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I'm using Oracle SQL Developer Data Modeler[^]
ole.Grossklaus@gmx.de wrote: - reverse engineer to have a starting Point (Oracle 11 and MSSQL2008) to have all tables in this tool (on a hidden layer if possible
Supports Oracle (duh), MSSQL and DB2.
ole.Grossklaus@gmx.de wrote: - Select some tables and copy them (link) to a new layer to switch visibility depending on the development task that i want to give to a developer
It's tab based, you can create a new view with a subset of existing tables.
ole.Grossklaus@gmx.de wrote: - Display compact (square with table Name, and PKs only). Hide all other columns
Yes
ole.Grossklaus@gmx.de wrote: - a good way to arrange everything on Screen to avoid crossing Relations and to nicely arrange every table and relation
Auto arrange sucks big donkey balls. But it does in all tools in my opinion. So it's up to you to do the work I'm afraid.
ole.Grossklaus@gmx.de wrote: - toggle visibility of a layer
It's tab based, and you can have one or more windows and move the tabs between them.
ole.Grossklaus@gmx.de wrote: - a certain table appears on more than one layer depending on the development tasks
A table can appear in many windows/views, not sure if this is what you mean.
ole.Grossklaus@gmx.de wrote: - something that makes it all "nice" to present to the Boss.
Use Powerpoint.
ole.Grossklaus@gmx.de wrote: - crow feet Notation
Barker notation - check
Be excellent to each other. And... PARTY ON, DUDES!
Abraham Lincoln
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