What is a candidate row when talking about Oracle and SQL? Using it in a sentence would be as such:
"The candidate row is fetched from the table specified in the outer query."
This simple query throws the "Ambiguous column name TaskID" error on one db-server only. This is ridiculous. We tested this with the same database structure on different servers and different versions of ms sql (2005/2008), and it's only THIS particular client's server that throws the error. I'm actually frustrated.
SELECT Tasks.TaskID
FROM Tasks
INNER JOIN TaskHelpers ON TaskHelpers.TaskID = Tasks.TaskID
order by TaskID
Yes, I know I can put "Tasks.TaskID" into the order by clause, but for some reasons I can't.
Trying to convert this tax-like IRS function http://stackoverflow.com/questions/1817920/calculating-revenue-share-at-different-tiers to SQL. The assumption is the table would be one column (price) and the tiers will be added dynamically.
My first attempt has some case statements that didn't work out well. I have since scrapped it :) Thanks for the help!
Hi guys:
Suppose we got a original query as follows:
SELECT A, B, C FROM tblA
Now, I need to additional artificial rows like
SELECT 'Kyala', B, C FROM tblA when, for example, C = 100 to be inserted into the resultset.
How could I achieve it using a single SQL instead of relying on table variable or temp table?
Hi,
I have an SQL query that returns an amount of tuples (about 50).
Now I need to display the results, 15 tuples at a time, then I will have a "view more" button to view the next 15 results.
Can you please help me how I can make this? The issue is that I cannot use the 'limits' because each time I run the query the results will be different, hence when pressing view more, I may get the same results of the same page.
thanks
Hi,
I have a server where I installed SQL Server 2008 and after I applied the SP1.
Now, I want also to add the Analysis Services to this instance by using the "Add or remove features...".
My questions are:
Is it possible to add the Analysis Services on a server with SP1 already installed?
How can I apply the SP1 also to the new Analysis Service feature?
THANKS!
Hi, I have two dates of the form Start Date: 2007-03-24, End Date: 2009-06-26
Now I need to find the difference between these two in the below form:
2 years, 3 months and 2 days
Can someone please … in SQL Server 2005
I have table similar to the following:
Year | Product | Value
2006 A 10
2006 B 20
2006 C 30
2007 A 40
2007 B 50
2007 C 60
I would like a query that would return the following comparison
Product | 2006 Value | 2007 Value
A 10 40
B 20 50
C 30 60
What are the options to do so? Can it be done without joins?
I'm working with DB2, but answers in all SQL types would be helpful.
I have two tables that have relationship with UserName field. Based on UserName column, I want to get ID from CarReserve table. Here is my SQL statement:
SELECT CarReserve.ID
FROM CarReserve
INNER JOIN aspnet_Users ON CarReserve.UserName = aspnet_Users.UserName
WHERE UserName = @UserName
Unfortunately, I am getting this warning:
Ambiguous column name "UserName"
Can anyone here tell me what is wrong with my statement?
E.g.
Declare @str varchar2(20)
Set @str = 'A Student'
Select Reverse(@str)
Output:
tnedutS A
Expected being:
Student A
The output(using Reverse) is as expected. But my requirement is the one described.
Help needed with SET BASED.
I am using SQL SERVER 2005
Hi,
I have to run a query in the loop in SQLPLUS. and the count of loop is coming from some other SQL query. So i have to declared a variable which will take the value of count. Now I want to use this variable in my query. How would i be able to do the same . Please suggest me
Thanks in advance
Hi,
I want to add browsable attribute to some properties for entities generated by linq-to-sql.Is it a good idea? Since,these entities are auto-generated,and when I regenerate they(the attributes I have added) might be overwritten
Hi i want to display join result of two tables but don't want to show matching column separately. I want it one instead of two. so please tell me what query should i use for this. I m using sql server 2008 and my query is like:
select * from Customer_Order, optRelation where Customer_Order.orderNumber = optRelation.orderNumber AND optRelation.orderNumber = 21. please reply soon
I have two SQL 2005 instances that reside on different networks. I need to backup a database from instance A and restore it to a database in instance B on a weekly basis so that both databases hold the same data. After the restore, logins SIDS on database B are changed and therefore users can't log into database B and connection strings for the web application it supports are broken. Is there a work around for this? Thanks.
Hi
I use SQL server 2008 and I have created some tables but I want to edit some of them but it does not let me and will show an error ! how can i solve my problem ??? please help me
I simply want to include a row number against the returned results of my query.
I found the following post that describes what I am trying to achieve but gives me an exception
http://vaultofthoughts.net/LINQRowNumberColumn.aspx
"An expression tree may not contain an assignment operator"
In MS SQL I would just use the ROWNUMBER() function, I'm simply looking for the equivalent in LINQ.
I'm trying to learn SQL to store the data rather than reading the file and populating the whole data structure in memory. would it be like reading the data from disk instead of direct memory?
Hi,
I want to develop a function in PHP that checks how dangerous a SQL statement is. When i say dangerous i mean, certain symbols, characters or strings that are used to get data from a database that the user shouldnt see.
For example:
SELECT * FROM users WHERE userId = '1'
can be injected in several ways. Although i clean the params, i also want to monitor how safe the query is to run.
Thanks in advance
We need to INSERT 2000 records into SQL DB from C# .Net code.
For this is there any way to INSERT all 2000 records at a time instead of executing the INSERT query for each record.
Also how would be the performance impact of doing this?
Thanks & Regards
Padma
I was wondering if there was any recommended max size for MDF and/or LDF Files for an SQL server instance.
For example, if I want to create a 400 GBytes Database, is there a rule to help me decide how many mdf files I should create ? or should I just go ahead and create a single gigantic 400Gbytes mdf file?
If so is this going to somehow affect the database performances ?
Hi,
I have the following table in an access database
id VisitNo Weight
1 1 100
1 2 95
1 3 96
1 4 94
1 5 93
Now row 2 and 4 are deleted. So i have...
id VisitNo Weight
1 1 100
1 3 96
1 5 93
However what i need is...
id VisitNo Weight
1 1 100
1 2 96
1 3 93
What is the SQL query i need to accomplish the above?
thanks
Was wondering if any one could recommend any and all books for learning more about SQL and DB concepts?
I found this one while browsing SO, but was wondering if anyone had other or more up to date recommendations?
We are switching from a SQL cluster to a mirrored solution. The problem is that we have a bunch of programs that would have to switch connection strings to handle the failover. Is there any way the we can set up a redirect or proxy that would take any legacy requests and forward them to the mirrored solution?