We use stored procedures to populate the properties of data layer objects. Is there any advantage or disadvantage (performance wise) of using "SELECT * FROM Table1" Vs
SELECT COLUMN1, COLUMN2, COLUMN3, ETC FROM Table1.
Using individual column names in the select store procedure is getting difficult to maintain for large number of columns or when columns are added or removed.
Ok, I currently have a query which is basically doing the following:
Code:
SELECT ... WHERE x IN (101,102...)
I have a couple of questions:
Firstly would making this to a stored procedure really make much of a difference to performance considering the WHERE IN clause.
Secondly how can I pass this list of values to use in the WHERE IN clause to the stored procedure. I tried nVarChar but really wasn't surprised when it didn't work... and can't really think of another clear way.
I need to keep track of the number of hits on a particular page. Im using a stored Procedure
What I want to do is get the number of hits and increment it by one :)
ie: Sub Procedure should be like below
SELECT noOfHits WHERE pageName = 'bla bla'
noOfHits = noOfHits + 1 etc.
Also, some of the pages will be added and deleted all the time, so before I increment the noOfHits variable I need to check that the pageName 'bla bla' exists. AND if it doesnt I need to create a pageName called 'bla bla'
What I need to do in essence is:
1. Check that a particular row exists. if it doesnt create it. 2. Increment a value (by one) to a column in this particular row.
Phew. Hope you got that. Any ideas much appreciated,
i want use stored procedures in select query. for example : select * from table where (... run a stored procedure ....) or update from table set a=@a where (... run a stored procedure ....)
Hi, I'm developing a fresh SQL DB which is result of a deep analysis of an old Access DB. THe thing is, this old one had very complex consultations to the Access tables, and some consultations were using another consultations as way to select some specific data. THe ideia in SQL is to avoid that too, however, there are some data that may serve exactly the same to some bigger stored procedures. This way, I have three options I guess: 1. Create every stored procedure making select queries directly to the table and it's done!2. Create auxiliary stored procedures which will select the redundant data, and when it is needed, another stored procedures call this one and use its returned data. (is this possible anyway?).3. I create a view to this redundant data, and the greater depth stored procedures access this data of the view when needed. I've heard, however, that a select to a view is slower than directly to the table, once the view adds an extra query to the process.. What is your guess on this issue of mine?I'm almost sure that option 1 is the best, however, I'd love to hear from you guys your opinion on this. The greater issue above this all is just one - performance. Thanks a lot!
Hi there, I have a database table with a field to specify the username of records that particular user is allowed to access (read only). I want to be certain the user does not have access to any other records. So I'm using a stored procedure to query the table with "WHERE dbuser = USER". My problem is that the stored procedure is returning an error that the table I'm querying cannot be found, and I suspect it is because the user does not have proper permissions to see those tables, even through the stored procedure. So my question is, how do I grant the user sufficient access for this stored procedure to work without outright granting them select permission on the tables? Much appreciated!
I am trying to call a stored procedure inside a SQL SELECT statement. Has anybody had to do this in the past? I have a SELECT statement in a Microsoft Access database and I need that SELECT statement to call the stored procedure in the SQL server. Any help would be appreciated
I have nested a Stored Procedure within a stored procedure. The nested stored procedure ends in a select statement. What I'd like to do is either capture the results of the select statement (it will be 1 row with 3 columns, I only need the contents of first column), or suppress the select statement from displaying in the final results of the Stored Procedure it is nested in.
In my SPs, I commonly have a situation, where a SELECT statement gets a single scalar value (e.g. SELECT Name FROM Employee WHERE id=@id) from a table.
Because the result is still a relation, I cannot process it directly or assign the result to a variable (like set @name = SELECT Name FROM Employee WHERE id=@id)
So, how can I process the results of the statement in this case.
In some other cases, the result is actually a relation. And I want to iterate over all rows, processing each row's columns. (I know this smells of ADO.NET, but how can I help it if I am coming from that background)...
The point is I want to do all this in T-Sql on server side!!!
Hi,Has any one ever compared the performance of calling a DataTable'sSelect method with a stored procedure doing the same thing?My point is:dataRows = DataTable.Select(filter) is better orPassing paramters to stored procedure?The datatable holds about 500-700 rows at any given time.If I select one of the approaches the business logic will go intorespective layers.With dotnet in picture what would be a good approach- Have the data in Datatable and do a filter on the data or callstored procedures which has been the convention.Can some one pl. suggest?
I want to know the differences between SQL Server 2000 storedprocedures and oracle stored procedures? Do they have differentsyntax? The concept should be the same that the stored proceduresexecute in the database server with better performance?Please advise good references for Oracle stored procedures also.thanks!!
This Might be a really simple thing, however we have just installed SQL server 2005 on a new server, and are having difficulties with the set up of the Store Procedures. Every time we try to modify an existing stored procedure it attempts to save it as an SQL file, unlike in 2000 where it saved it as part of the database itself.
Using SQL 2005, SP2. All of a sudden, whenever I create any stored procedures in the master database, they get created as system stored procedures. Doesn't matter what I name them, and what they do.
For example, even this simple little guy:
CREATE PROCEDURE BOB
AS
PRINT 'BOB'
GO
Gets created as a system stored procedure.
Any ideas what would cause that and/or how to fix it?
How do I search for and print all stored procedure names in a particular database? I can use the following query to search and print out all table names in a database. I just need to figure out how to modify the code below to search for stored procedure names. Can anyone help me out? SELECT TABLE_SCHEMA + '.' + TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_TYPE = 'BASE TABLE'
Seems like I'm stealing all the threads here, : But I need to learn :) I have a StoredProcedure that needs to return values that other StoredProcedures return.Rather than have my DataAccess layer access the DB multiple times, I would like to call One stored Procedure, and have that stored procedure call the others to get the information I need. I think this way would be more efficient than accessing the DB multiple times. One of my SP is:SELECT I.ItemDetailID, I.ItemDetailStatusID, I.ItemDetailTypeID, I.Archived, I.Expired, I.ExpireDate, I.Deleted, S.Name AS 'StatusName', S.ItemDetailStatusID, S.InProgress as 'StatusInProgress', S.Color AS 'StatusColor',T.[Name] AS 'TypeName', T.Prefix, T.Name AS 'ItemDetailTypeName', T.ItemDetailTypeID FROM [Item].ItemDetails I INNER JOIN Item.ItemDetailStatus S ON I.ItemDetailStatusID = S.ItemDetailStatusID INNER JOIN [Item].ItemDetailTypes T ON I.ItemDetailTypeID = T.ItemDetailTypeID However, I already have StoredProcedures that return the exact same data from the ItemDetailStatus table and ItemDetailTypes table.Would it be better to do it above, and have more code to change when a new column/field is added, or more checks, or do something like:(This is not propper SQL) SELECT I.ItemDetailID, I.ItemDetailStatusID, I.ItemDetailTypeID, I.Archived, I.Expired, I.ExpireDate, I.Deleted, EXEC [Item].ItemDetailStatusInfo I.ItemDetailStatusID, EXEC [Item].ItemDetailTypeInfo I.ItemDetailTypeID FROM [Item].ItemDetails IOr something like that... Any thoughts?
I have MSSQL 2005. On earlier versions of MSSQL saving a stored procedure wasn't a confusing action. However, every time I try to save my completed stored procedure (parsed successfully ) I'm prompted to save it as a query on the hard drive.
How do I cause the 'Save' action to add the new stored procedure to my database's list of stored procedures?
We recently upgraded to SQL Server 2005. We had several stored procedures in the master database and, rather than completely rewriting a lot of code, we just recreated these stored procedures in the new master database.
For some reason, some of these stored procedures are getting stored as "System Stored Procedures" rather than just as "Stored Procedures". Queries to sys.Objects and sys.Procedures shows that these procs are being saved with the is_ms_shipped field set to 1, even though they obviously were not shipped with the product.
I can't update the sys.Objects or sys.Procedures views in 2005.
What effect will this flag (is_ms_shipped = 1) have on my stored procedures?
Can I move these out of "System Stored Procedures" and into "Stored Procedures"?
I am writing a set of store procedures (around 30), most of them require the same basic logic to get an ID, I was thinking to add this logic into an stored procedure.
The question is: Would calling an stored procedure from within an stored procedure affect performance? I mean, would it need to create a separate db connection? am I better off copying and pasting the logic into all the store procedures (in terms of performance)?
Hi all - I'm trying to optimized my stored procedures to be a bit easier to maintain, and am sure this is possible, not am very unclear on the syntax to doing this correctly. For example, I have a simple stored procedure that takes a string as a parameter, and returns its resolved index that corresponds to a record in my database. ie exec dbo.DeriveStatusID 'Created' returns an int value as 1 (performed by "SELECT statusID FROM statusList WHERE statusName= 'Created') but I also have a second stored procedure that needs to make reference to this procedure first, in order to resolve an id - ie: exec dbo.AddProduct_Insert 'widget1' which currently performs:SET @statusID = (SELECT statusID FROM statusList WHERE statusName='Created')INSERT INTO Products (productname, statusID) VALUES (''widget1', @statusID) I want to simply the insert to perform (in one sproc): SET @statusID = EXEC deriveStatusID ('Created')INSERT INTO Products (productname, statusID) VALUES (''widget1', @statusID) This works fine if I call this stored procedure in code first, then pass it to the second stored procedure, but NOT if it is reference in the second stored procedure directly (I end up with an empty value for @statusID in this example). My actual "Insert" stored procedures are far more complicated, but I am working towards lightening the business logic in my application ( it shouldn't have to pre-vet the data prior to executing a valid insert). Hopefully this makes some sense - it doesn't seem right to me that this is impossible, and am fairly sure I'm just missing some simple syntax - can anyone assist?
Hello, I am moving from Access to SQL and I am trying to create DELETE and a SELECT procedures. I was following the Asp.Net 2.0 Membership, Roles, etc procedures but I am not getting there. Could someone, please, post just the 3 procedures for this example? It would be a start for me to work on ... I have related two tables: <Content> and <ContentLocalized> <Content> |----- [ContentId] Type=UniqueIdentifier PK | [ContentName] Type=NVarChar(100) | | <ContentLocalized> | [ContentLocalizedId] Type=UniqueIdentifier PK | -------> [ContentId] Type=UniqueIdentifier FK | [ContentCulture] Type=NVarChar(5) | [ContentHtml] Type=NVarChar(MAX) Basically I want to create 3 stored procedures: 1. SELECT [ContentHtml] Given [ContentName] and [ContentCulture] 2. DELETE a content in <Content> and all its dependencies in <ContentLocalized> given [ContentName] 3. DELETE a content record in <ContentLocalized> given [ContentName] and [ContentCulture] I allready have an Access Query for (1) but I don't think I should try to use it in SQL: SELECT ContentLocalized.ContentHtml FROM Content INNER JOIN ContentLocalized ON Content.ContentId=ContentLocalized.ContentId WHERE (((ContentLocalized.ContentCulture)=[@ContentCulture]) AND ((Content.ContentName)=[@ContentName])); Thank You Very Much, Miguel
i have created the folowing function but keep geting an error.
Only functions and extended stored procedures can be executed from within a function.
Why am i getting this error!
Create Function myDateAdd (@buildd nvarchar(4), @avdate as nvarchar(25)) Returns nvarchar(25) as Begin declare @ret nvarchar(25) declare @sqlval as nvarchar(3000)
set @sqlval = 'select ''@ret'' = max(realday) from ( select top '+ @buildd +' realday from v_caltable where realday >= '''+ @avdate +''' and prod = 1 )a'
i need to use only one stored procedure and access many tablesso how write a stored procedure for that dohelp me looking forward for a reply to the earliest i am developing web page using asp.net using c# and sqlserver as backend
Hello I have two stored procedures @ID INT AS SELECT (CASE WHEN NUM >= 10 THEN CAST(PAID AS FLOAT) / CAST(NUM AS FLOAT) * 100 WHEN NUM < 10 THEN 0 END) AS PER FROM (SELECT (SELECT COUNT(*) AS Expr1 FROM Event_data AS D LEFT OUTER JOIN Events AS E ON E.id = D.Event_id WHERE (D.Transaction_type = 1) AND (D.Player_id = @ID)) AS NUM, (SELECT COUNT(*) AS Expr1 FROM Event_data AS D LEFT OUTER JOIN Events AS E ON E.id = D.Event_id WHERE (D.Transaction_type = 1) AND (D.Transaction_value > 0) AND (D.Player_id = @ID)) AS PAID) AS X and @ID INT AS SELECT P.*,'/' + DBO.GETCHIPFOLDER(@ID) + '/' + ISNULL(P.PHOTO,'BLANK.GIF') AS PIC,ISNULL( (SELECT SUM(TRANSACTION_VALUE) FROM EVENT_DATA WHERE PLAYER_ID=@ID AND TRANSACTION_TYPE=1 GROUP BY PLAYER_ID),0) AS WINNINGS FROM PLAYERS P undefined P
The first returns a percentage for player wins, the second gives me a photo and sums the player winnings I would like to combine the results so I can get the percentage and wininngs in one query, in another matter all together I would like create a procedure like the first but instead of returning only one player, I would like to return the percentage for each player Thanks in advance for any light you can shine on this.
I have a question about stored procedures, Is it better to use stored procedures even if I only use it once at my site? Or is it better to write the sql-part directly in the sqldatasource? And am I forced to create two different stored procedures even if they are exactly the same except the "Where-part"? Now I have around 40 stored procedures, and quite many of them looks the same except the where-part... (Iam just a beginner with SQL)
Hello every one, I m working in aspx 2.0 with sql server 2005, please tell me how can I create Stored Procedures for two or more tables not a single table(select,insert,update,delete please send me the queries which can help me in easy way I will very thankful to you Thank you
I am learning to make a ASP web site and feel that if i can do it the harder way using some stored procedures instead of using multiple datasources on each page requiring that it might be better. So i am wondering what are these used for:DECLARE vs just entering "@param1 varchar(30)"When i use "DECLARE @rc int" i get the error "Incorrect syntax near DECLARE"How to return values to ASP page in Visual Studio 2005 How to use @@rowcount - doesn't seem to work for me?i tried using DECLARE @rc intSET @rc = @@rowcountWhen to use GO, BEGIN etcIf i want to use the variable only in the procedure, and not needed to be inputed, do i need to put it in the CREATE PROCEDURE (section)?Should i use my own stored procedures or VS2005 created ones using datasources? not really procedures but SQL, in SQL can i do like IF ELSE? if i use my own i cant use the Optimistic Concurrency right? and whats that?
cREATE PROCEDURE emp @val varchar(50)AS declare @test varchar(50)declare @a varchar(50)set @a= @val + '_a'set @test = 'alter table dbo.rights_user add ' + @a + ' varchar(50) null' execute(@test) GO this is my procedure...anyth wrong here...i can able to execute procedure only with 3 char..egexec emp 'na'exec emp 'hr10'--->wen i try like this cannot..showing datataype mis match
