Which of the following three options would you choose for a column name in a SQL Server table, and why?
YearToDateWages
YTDWages
YtdWages
Follow up:
SSN
Ssn
SocialSecurityNumber
I'm performing a SQL query through hibernate, which looks like:
SELECT thi
FROM track_history_items thi
JOIN artists art
ON thi.artist_id = art.id
WHERE thi.type = "TrackBroadcast"
GROUP BY art.name
ORDER thi.createdAt DESC
but I'm getting the message that 'Node to traverse cannot be null!'. Anyone know what could be causing this?
--EDIT--
I'm pretty sure that this problem is being caused by the possibility of artist_id to be null. However, I can't prevent this, so can I just skip the rows track_history_item rows which have a null artist_id?
Assuming daily certain up to date database is produced via loading from various sources.
Changes need to be applied to historical database based on uid, new records will added , non existing will be softly deleted , some will be updated. Is Ado.Net and Sql statements the most appropriate technology for the task like this ?
I am using the below statement to generate age of a person in Oracle SQL and my question is below.
SELECT TO_NUMBER(TO_CHAR(CURRENT_DATE,'YYYY'))-TO_NUMBER(TO_CHAR(BIRTH_DATE,'YYYY')) FROM NAME WHERE NAME_ID =NAME_ID
This statement is only correct upto so far that I need a statement which could count months and even days in order to get the age.
How can I translate the following SQL query into a named_scope?
select users.*, sum(total_quantity * total_price) as points_spent
from orders
join users on users.id = orders.user_id
where pay_type = 'points'
group by user_id
order by points_spent desc
Thanks!
Hello,
We have an .NET client app working against SQL Server 2005 (clustered), do I need to do something special in the client app to make it cluster aware?
Thanks.
I have been trying to solve this problem for a lot of days. But wouldn't. Please help me.
I need a SQL to list product_code, product_name, qty_sold, last_order_date for all the products that have been sold within a date range sorted by the number of quantity sold.
My Table structure:
tbl_product(product_id,product_code,product_name)
tbl_order_detail(order_item_id,order_id,product_id,quantity)
tbl_order(order_id,order_date)
We have developers some developers who are developing against a SQL Server 2005 database, while others are using 2008.
We just discovered that generating the edmx against a 2008 database set the ProviderManifestToken to 2008, which means some queries won't work against a 2005 database.
While this is a known issue, is there any way to set this value at run time, based on a config file?
Reading about both Linq to SQL and Entity Framework I have developed the impression that EF is more suitable for apps that get data from multiple data sources.
But as I am reading about MVC2 models I see an example where EF is more loosely coupled with your data model.
If I have to add or remove some columns from a table then what is involved in updating my model or DAL with each of these implementations?
Using Linq to SQL:
if(!parentlist.childlist.Contains(row1))
parentlist.childlist.Add(row1);
else
How do I update the required childlist row with row1? Each row of the child list has a unique id.
parentlist implements IEnumerable and childlist is IList.
Please explain, in plain English, what question this SQL query answers:
SELECT SUM(price) FROM Room r, Hotel h
WHERE r.hotelNo = h.hotelNo and hotelName = 'Paris Hilton' and
roomNo NOT IN
(SELECT roomNo FROM Booking b, Hotel h
WHERE (dateFrom <= CURRENT_DATE AND
dateTo >= CURRENT_DATE) AND
b.hotelNo = h.hotelNo AND hotelName = 'Paris Hilton');
Hi,
Can anyone please help me?
I am having bunch of .sql files. I want to parse (validate) those files before executing them on server.
I have many online sites which parse the code. But I want to parse the code using C#.
So please can you guide. If there is any tool, dll I need to use.
I just want to parse the file and not execute it
imagine 2 tables (rather stupid example, but for the sake of simplicity, here you go)
words
word_id
letters
letter
word_id
how can i select all words while selecting all letters that belong to a word and concatenating them to said word? it is important that the letters are returned in the order they appear in the table, as the letter may be mixed into other words, but the order is correct.
|word_id| |word_id|letter|
+-------+ +-------+------+
| 1| | 1| H|
| 2| | 2| B|
| 2| Y|
| 1| I|
| 2| E|
should return
|word_id|word|
+-------+----+
| 1| HI|
| 2| BYE|
any way to accomplish this in pure SQL?
I have a MS SQL 2008 database in 3NF.
I must check if the db can support many concurent users.
Which is the best method ?
[Is there any free tool to do this ?]
Thank you very much.
I need to convert a number which gives decimals in factored format in to decimals,
i.e. 11.16 is 11.5 in decimal. This is because 16 is in base of 32 and 11.16 should be read as 11+16/32 = 11.5
I get 11.16 as a string and I need to change it to 11.5 as numeric in MS SQL(2005) database.
Any shorter way of doing this rather than splitting strings,converting to numerics,maths,convert to string, concatenate and then convert to numeric?
Convention has it that table names should be the singular of the entity that they store attributes of.
I dislike any T-SQL that requires square brackets around names, but I have renamed a Users table to the singular, forever sentencing those using the table to sometimes have to use brackets.
My gut feel is that it is more correct to stay with the singular, but my gut feel is also that brackets indicate undesirables like column names with spaces in them etc.
Should I stay, or should I go?
Hi
i try to add persistance to my workflow using sql service persistance and all i know is how to add Persistence Service to the Workflow Runtime using code in the host app but what if i have the workflow as web service how can i add persistance..???
Thanks
Hi
Is there any way to massively alter primary keys(uid) to all tables with no primary primary keys in sql server database ? I have a lot of tables and most of them don not have primary keys.
Thanks in advance.
There is an example for today here
http://stackoverflow.com/questions/2583228/get-row-where-datetime-column-today-sql-server-noob
I am primarily interested in 2008 only. For today it looked like
SELECT (list of fields)
FROM dbo.YourTable
WHERE dateValue BETWEEN
CAST(GETDATE() AS DATE) AND DATEADD(DAY, 1, CAST(GETDATE() AS DATE))
What literal value of date(s) or functions ( I need a format ) should I place there to make it work independent of local settings.
I have two tables:
info: ID, fee_id
and
fee: ID, amount
and a reference between them (SQL Server 2008):
ALTER TABLE info WITH CHECK ADD CONSTRAINT FK_info_fee FOREIGN KEY(fee_id)
REFERENCES fee (ID)
ALTER TABLE info CHECK CONSTRAINT FK_info_fee
GO
How to configure this reference that way so a record in fee will be deleted if info.fee_id becomes NULL
With respect to an application that has both a web and desktop client version:
What is the best practice for the desktop client which needs access to a SQL Server?
What are the benefits of connecting to the database from the application vs using a web service?
Which one provides better security?
What type of scope would call for one vs the other (enterprise intranet vs. web app, etc)
Are there any other considerations that are necessary when choosing on platform?
Is there a way I can set up combo box in an access form to list all the available sql servers and then an associated combo box to list the related databases? Can this be done in access?
In Plone I have a Z SQL methood:
SELECT [aapp_qtitle]
,[aapp_mtitle]
,[aapp_sdate]
,[aapp_duration]
FROM [AAPP].[dbo].[M_PageBodyElement] where [aapp_id]=<dtml-sqlvar aapp_id type=int>
How can I set the value of aapp_id in my Plone page code?
Hi,
I have a database (SQL server express 2008) which has a column that is defined as text. When we try to store some text which is in chinese, it is not saved. I read that the field should be ntext. I will now have to a conversion to my table to create the column as ntext.
Would I have to do anything with the collation of the database which is set to Latin?
JD