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U can create view from the tables and then create a join query using that view.
I dont know exactly how ur answer should be, so correct me if i am wrong!!!!
karthi
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so what type of joining i can use?
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How your output should be...? Based on your output only we can write views which can use left, inner or right join....
If u can post how your answer looks like based on your datas i might try from my side
karthi
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Perhaps they shouldn't be all "left" joins[^]?
Bastard Programmer from Hell 
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SELECT DISTINCTROW US.name, US.address, UP.file_path, UP.picture_path, HS.location
FROM user US
LEFT JOIN uploads UP ON US.user_id = UP.user_id
LEFT JOIN history HS ON US.user_id = HS.user_id,
uploads UD LEFT JOIN history HSI ON UD.upload_id = HSI.upload_id
WHERE US.user_id = 5
ORDER BY US.user_id
Hint: Replace DISTINCT to DISTINCTROW
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Not sure why you have the second join to the history table. If each upload has a unique user and a unique history row, then user_id in the history table is useless information for this query. The second history join is giving you the redundant rows.
Try and avoid using DISTINCT and its variations. It requires the server to do more work and therefore slow down your query.
SELECT
US.name,
US.address,
UP.file_path,
UP.picture_path,
HS.location
FROM
[user] US
LEFT JOIN
uploads UP
ON (US.user_id = UP.user_id)
LEFT JOIN
history HS
ON (US.upload_id = HS.upload_id)
WHERE
US.user_id = 5
ORDER BY
US.user_id
modified 15-Jun-12 16:51pm.
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I have a small programming problem, am requesting Your insight I don't know whether this should be in the C# forum or in the Database Forum, but since it looks more likely a Database thing, I'll ask it Here.
I have an application that is written in C# and has a Backed Database in SQL Server 2005. In Summary the application manages info on a company's distributors and their sales.
In the table, Distributors I have a Primary Key Column DistributorIDNO (char (8)) which stores their IDs in the formart SL000001 (up to a logical maximum of SL999999).
Different branches of the company are allocated number ranges to register new distributors, for example, the range SL002000 to SL002500 may be given to the office in Masaka (a town in My country), and at the Head Office they would continue to register others From SL002501 onwards).
Now, the people in Masaka may not fill up their quarter, which means between SL002000 and SL003000, some numbers are taken up, while others are not.
I would like to write a function that should look through the database and determine which numbers, between a particular range, have not been registered.
Peter
.NET Developer, loved programming from the day I looked at Basic code for the DOS Game "Snake". Learning doesn't stop.
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This is NOT a good design for your primary key, a PK should be stupid and not convey any information.
Create a table variable and fill it with all possible numbers between the range you want to test, then select from that table where the PK is not in your Distributor table.
DECLARE
@Top INT,
@bottom INT
SET @bottom = 2000
SET @Top = 6000
DECLARE
@Count INT,
@Str VARCHAR(20)
DECLARE @Tbl TABLE(Code VARCHAR(20))
SET @Count = 1
WHILE @Count < @Top
BEGIN
SET @Str = 'SL' + RIGHT('000000000'+CAST(@Count + @bottom AS VARCHAR(10)),8)
INSERT @Tbl(Code) VALUES (@Str)
SET @Count = @Count + 1
END
SELECT Code
FROM @Tbl
WHERE Code NOT IN (SELECT PD FROM TableBame)
Never underestimate the power of human stupidity
RAH
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Does the term "SLOO" change? If not, then your key is built from multiple facts, and should be split into multiple columns. A simple identity-field would do nicely as a surrogate key, as suggested by MyCroft.
Bastard Programmer from Hell
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My company's reporting software combines data from multiple sources such as point of sale, inventory, accounting, payroll, etc.. Where possible, we provide our customers with a direct connection interface against the datasource, usually SQL Server. All we require is read only access to the vendor database. A long time customer recently switched to a new inventory system. Our connection to this system uses a view created in another sql server database (usually the master) residing on the same server/instance. The customer asked the IT department for help in getting the view created, and setting up a readonly sql server login to pull the data. This started a lot of questioning, and the next thing I know, the customer forwards me a response from the inventory vendor advising against using this view against their database. Why? Without quoting, they stated that due to the possibility of upgrades or structure changes, there was a possibility of corruption to the source tables. It is my understanding that by design, there is zero chance of a view causing corruption to the source tables. At worst, it would fail or produce incorrect results. I know I don't know what I don't know, which is why I am asking here. (and Google isn't coming up with any usable results) Am I wrong? To me this just seems like a scare tactic from the other vendor to charge for custom work.
"Go forth into the source" - Neal Morse
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Having worked for a software vendor in the past, I'm leaning toward scare tactic.
The vendor doesn't want to deal with potential performance problems / data inconsistency, etc, so they are covering their A**.
One way to handle this is ask the vendor what is their "supported" integration method?
You can always build the view against the vendor's recommendation, but look at your support contract and it might put a monkey wrench in the works.
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The only time I would even think that a view could cause you trouble is something called a Materialised view, and that's an Oracle thing - not a SQL Server one. Sounds like a scare tactic to me.
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A view in SQL Server can corrupt the underlying table, as changes to the view will change the table. However, your explanation seems to take care of that (read only user, etc.).
I have not worked with views for a while so I do not remember all the what will happens. Good luck.
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Name and shame the vendor, they are feeding you a line of bullshit. Your understanding is absolutely right, a read only connection to the database cannot corrupt the data. It can seriously affect performance if the view is badly designed but then you already know that!
Never underestimate the power of human stupidity
RAH
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Thanks for the feedback! The other vendor acknowledged that the statement was incorrect and will be providing the customer with the resources required (a readonly login + new views) to extract the requested information. Furthermore, they are making these changes standard for all of their customers...a resolution that works for everybody.
"Go forth into the source" - Neal Morse
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Hi All,
Can someone explain why MySql treat the two sql statement below different?
First Query (without inner join)
MySqlConnection conn = new MySqlConnection("server=localhost;database=db_test;uid=root;password=1234567");
MySqlCommand dbCommand = new MySqlCommand("select * from useraccess_privileges", conn);
dbCommand.CommandType = CommandType.Text;
if (dbConn.DBConnect.State == ConnectionState.Closed)
dbConn.DBConnect.Open();
DataTable dtData = new DataTable();
dtData.Load(dbCommand.ExecuteReader());
Result: dtData will return 7 row count
Second Query (with inner join)
MySqlConnection conn = new MySqlConnection("server=localhost;database=db_test;uid=root;password=1234567");
MySqlCommand dbCommand = new MySqlCommand("select t1.*, t2.MenuName from user_access t1 inner join useraccess_privileges t2 on t1.UserName = t2.UserName", conn);
dbCommand.CommandType = CommandType.Text;
if (dbConn.DBConnect.State == ConnectionState.Closed)
dbConn.DBConnect.Open();
DataTable dtData = new DataTable();
dtData.Load(dbCommand.ExecuteReader());
Result: dtData will return 1 row count
Second query should return 7 rows also since i just reference it to other table to get the full name of the specific username.
Thanks
if(you type your code here) {
Messagebox.Show("You help me a lot!");
}
else {
You help me = null;
}
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Because user_access contains only one row matching useraccess_privileges. useraccess_privileges has 7 rows, user_access has 1 or more rows.
Try a LEFT JOIN instead:
SELECT useraccess_privileges.MenuName, user_access.*
FROM useraccess_privileges
LEFT JOIN user_access
ON user_access.UserName=useraccess_privileges.UserName
and you'll get again 7 rows.
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Hi Bernhard,
Yep, i already did that but no luck. I don't understand why it return only 1 row.
The work around that I did was like this.
DataTable dt = new DataTable();
MySqlCommand command = new MySqlCommand();
command.CommandType = CommandType.Text;
command.CommandText = "SELECT useraccess_privileges.MenuName, user_access.* FROM useraccess_privileges LEFT JOIN user_access ON user_access.UserName=useraccess_privileges.UserName";
MySqlDataAdapter da = new MySqlDataAdapter(command);
da.SelectCommand.Connection = conn;
da.Fill(dt);
If the above code was applied then it will return the correct row number. I really don't understand why.
Thanks
if(you type your code here) {
Messagebox.Show("You help me a lot!");
}
else {
You help me = null;
}
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Hello all. I created a DB with a single table, with two columns enabled for full-text search. Everything works fine. However, whenever I lookup for a word ("salud", with means "health" in Spanish), it throws no results:
select id, vision, age, gender, [state], tier1
from visions
where contains(tier1, 'Salud')
Frustrated with this, I started looking on the causes. I came across an article that suggested to run a parse on the word, and so I did:
SELECT * FROM sys.dm_fts_parser (' "Salud" ', 3082, 0, 0)
This returned the following record:
0x00730061006C00750064 1 0 1 Noise Word salud 0 Salud
So, to my dismay, "salud" is a Noise Word. I've been trying to search how to stop "salud" from being a noise word, but all I find is reference to some noisees files, which I'm unable to find in my SQL Server 2008 installation.
Thus my question: does anybody know where can I remove "salud" from being a noise word? Any clue on this matter will be reaaaally appreciated!
Thanks in advance. Best regards.
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The "stop words" are in a system view.
SELECT [stopword], [language_id]
FROM [master].[sys].[fulltext_system_stopwords]
where language_id=3082
I tried a DELETE query:
delete
FROM [master].[sys].[fulltext_system_stopwords]
where [stopword]='salud' and language_id=3082
but that caused an exception:
"Ad hoc updates to system catalogs are not allowed"
I do not have further ideas...
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Hi, thanks so much for your help!
I finally managed to remove the noise words. It seems that MSSQLSVR2K8R2 (Uf!) has hardcoded somewhere (apparently some "resource" database, whatever that is) the noise words for each language. So, what I did was:
1.- Create my own stoplist[^]
2.- Through the SQL Management Studio, open the full-text index properties and then select the recently created stoplist rather than the default.
3.- Alter[^] the stoplist and drop the noise word.
4.- Re-index the full-text index.
Thanks again for your help! 
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Those are stored as plain text-files 
See MSDN[^].
Bastard Programmer from Hell 
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Yeh, tried looking for those files, yet didn't find 'em on MSSQLSVR 2008. I found the Thresaurus, mind you, but not the words. I read in MSDN that in 2008 they were stored in the "Resources" database, yet I wasn't able to find 'em.
Thanks for the insight!
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Fernando A. Gomez F. wrote: MSSQLSVR 2008
I should have read more carefully.. As I read, you did find 'em by now
Bastard Programmer from Hell
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