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Yet, I can't decide whether it can be done as commercial. Maybe a point will be in maintaining both commercial and freeware version. I'll think about posting an article, I will not be able to post it until the weekend.
The first version of my program was written in old 2005 I investigated the area that days and found nothing I could use to do the job I neeeded for free. But the time passed, things might have changed. You're right, I need to do the investigation nowadays also.
If someone else will post answers here, I will be greatful!
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Following the Head First eBook on C# development. The current chapter requires controls for a small contacts database already created. It should be a matter of dragging the form, then the database on to the IDE. Have not been able to do so after several attempts. Seeking guidance on how to get this done. Images are uploaded to the link below.
https://skydrive.live.com/redir?resid=52B21D2F3F75A51A!1222[^]
Much thanks for guidance
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This may be better asked in the C# forum. The biggest hurdle to database access is the security. Once you have solved that them it becomes more of a C# problem of object typing.
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i need to create a login interface and link ITS Typing Test System to a database to capture following:
1. Name (new field, to be created in login interface)
2. (document.JobOp.typed.value.replace(/ /g, " ").split(" ").length)
3. totalTime
4. wpmType
5. aftReport
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And your question is?
Never underestimate the power of human stupidity
RAH
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Dear all,
I have this sort of weird question in terms of sql data and query.
Consider the dataset below. I have this results in to a table variable (SQL 2008)
EmailAddress ID
abc@test.com 1000
def@test.com 1001
ppp@test.com 1002
iii@test.com 1002
ttt@test.com 1000
Now, what I want out of this table variable is the below result
EmailAddress ID
abc@test.com 1000
def@test.com 1001
ppp@test.com 1002
What I want is to have first available unique ID and their email address. Can anyone please write a query or direct me.
Thanks.
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There are a number of solutions to this one.
Use a sub query select the top 1 from table order by ID
Or you can use the Row_Number() and partition grouped and ordered by the ID and an outer query that selected row 1 for each ID.
There is also a CTE solution I have seen posted but don't know the details.
Never underestimate the power of human stupidity
RAH
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You can do this by using Row_Number functionality with 'Partition By' on ID Column.
Then put in Where Claue with condition as RowNum =1.
- Happy Coding -
Vishal Vashishta
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SELECT ID, MIN(EmailAddress)
FROM TEST
GROUP BY ID
Bastard Programmer from Hell 
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Are you sure you've got that query right?
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Is there are reason that you want me to doubt the post?
Bastard Programmer from Hell
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Look at the field in the min as a hint.
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I did. He wants the ID's unique, and the first mailadress for that ID.
Did I miss something? 
Bastard Programmer from Hell
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Hi, everybody
I need to conduct a large amount of data analysis on database. Could anyone recommend an interactive application for data analysis?
The requirements are:
1. Able to cope with the unexpected requirement rapidly.
2. Able to perform further computations on results interactively (base on the mass data).
3. Easy to confront even a large amount of complex computations
What would you great expert recommend?
Thanks in advance.
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Microsoft Excel and Sql Server. Those are the most-used all-purpose tools to do what you want. You can adapt using VBScript if Excel if those requirements change.
Most data-mining applications are written to mine for specific stuff.
Bastard Programmer from Hell
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Thank you for reply.
SQl lacks stepwise computation ablility, so It is not a ideal solution. What I mean about stepwise is:
1. In excel, I can write number "10" in A1 cell, then formula "=A1*5" in A2 cell. then formula "=A2+2" in A3 cell. A1->A2->A3, It's stepwise.
2. When I change 10 to 9 in A1, then result in A2 and A3 will changed automatic.
3. an example: a. to select out the 10 categories of best sellers b. as a further computation on the basis of result from a., to select out the top 20 products from each category, c. as a further comparison with that of the last year based on the result from a.
let's call SQL_A,SQL_B,SQL_C as SQL statements for a,b,c. when I changed SQL_A (for example change 10 categories to 9 categories ), I must change SQL_B and SQL_C. why? because SQL_B and SQL_C is based on SQL_A. that is, SQL_B may like:
with SQL_A as A
selet.......
Excel has another problem, It is too simple to process mass data analysis. for example, to compute the product whose annual sales values are all among the top 100.
data structure( sales table's fields): productID, time, value .
the sql solution is:
WITH sales1 AS (
SELECT productID, YEAR(time) AS year, SUM(value) AS value1
FROM sales
GROUP BY productID, YEAR(time)
)
SELECT productID
FROM (
SELECT productID
FROM (
SELECT productID,RANK() OVER(PARTITION BY year ORDER BY value1 DESC) rankorder
FROM sales1 ) T1
WHERE rankorder<=100) T2
GROUP BY productID
HAVING COUNT(*)=(SELECT COUNT(DISTINCT year ) FROM sales1)
above code is hard to write in Excel.
So what I want is some like SQL + Excel, do you have some idea?
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bestbird7788 wrote: So what I want is some like SQL + Excel, do you have some idea?
Use Sql and Excel.
bestbird7788 wrote: above code is hard to write in Excel.
It is. I'd suggest writing it in Sql, as a stored procedure.
bestbird7788 wrote: Excel has another problem, It is too simple to process mass data analysis.
It's one of the most advanced spreadsheets that I know. Alternatively, you could check out DMTL[^].
Bastard Programmer from Hell
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you are so funny 
I mean SQL+Excel in one tools, not one of them or both of them.
I will check DMTL, It seems like what I want. but I'm not sure does DMTL have stepwise ablility like excel? It seems just a code library. I should take a deeper research.
BTW, does DMTL support computing data with multiple dataset, just as join statement in SQL. Under my impression, other data mining tools can only work on one dataset.
thank you in advance!
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bestbird7788 wrote: you are so funny
I was not joking.
bestbird7788 wrote: I mean SQL+Excel in one tools, not one of them or both of them.
You can use Sql Server to prepare the dataset (and yes, it can operate on the previous record), and Excel to visualize that data.
bestbird7788 wrote: I'm not sure does DMTL
Neither do I. Never needed anything beyond the two tools I already named.
Bastard Programmer from Hell
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hi,thank you for your suggestion.
this line:
You can use Sql Server to prepare the dataset (and yes, it can operate on the previous record), and Excel to visualize that data.
------------------------------------
look at this scene:
1. I use sql to get some data, filled them in Excel, called it dataset1.
2. In Excel, I made some computation, then I got dataset2.
3. I need join the dataset2 with a table in database to generate dataset3.
how to do? creat a new table in database, fill dataset2 to database? and run join statment? then fill dataset3 to Excel? No, It's a big trouble.
so I need a tools like SQL+Excel.
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bestbird7788 wrote: how to do?
Create a linked server to both Excell files, and do a SELECT with a UNION into your Sql Server.
bestbird7788 wrote: No, It's a big trouble.
so I need a tools like SQL+Excel.
Good luck
Bastard Programmer from Hell
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bestbird7788 wrote: What would you great expert recommend?
That you adjust your mind set.
You seem to think that you have something that is easy yet solves anything. Which isn't possible.
The reason programming languages exist is because complex(=many steps) problems can only be solved using complex implementations.
So what you can do is one of the following
1. Find an existing application (like excel) and limit your problems to ones that work in that.
2. Use a programming language and solve anything.
3. Use a mix of 1 and 2 based on the needs of the problem.
Obviously there are disadvantages to all but that does cover the possibilities.
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Thank you for your advice.
I know you are right, there is no easy way to solve my problem.
I think SQL is more easy than programming languages like VB and C++ on common mass data computation, so I imagined if there is a tool that is more easy than SQL on multiple steps computation of mass data. So I posted this post and wanted someone who knows more than me.
DMTL maybe a good choice, I will make a research on it.
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If money is no issue, you can always get Qlikview[^].
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thank you
I will check it.
And I have 3 quesiton about Qlikview ,and I will appreciate if you give me some tips.
1.can Qlikview solve the problem above:to compute the product whose annual sales values are all among the top 100.
MSSQL data structure( sales table's fields): productID, time, value
SQL solution is as below:
---------------------------------------------------------
WITH sales1 AS (
SELECT productID, YEAR(time) AS year, SUM(value) AS value1
FROM sales
GROUP BY productID, YEAR(time)
)
SELECT productID
FROM (
SELECT productID
FROM (
SELECT productID,RANK() OVER(PARTITION BY year ORDER BY value1 DESC) rankorder
FROM sales1 ) T1
WHERE rankorder<=100) T2
GROUP BY productID
HAVING COUNT(*)=(SELECT COUNT(DISTINCT year ) FROM sales1)
2.does Qlikview have stepwise ability. What I mean is like: step1. filter data. step2. group data on step1 . step3. filter data again on step2. the most important is: step4. sorting data on the result of step1 as a sub step. It's like what Excel does.
3.dees Qlikview support multiple datasets computation without SQL. what I mean is like: join statements in SQL .
thank you for your reply.
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