Performance Problem With Views And Stored Procedures..
Nov 8, 2000
Hello Everybody,
I posted this same question couple of times in the news groups but no answers. I have a 2 tables and i am doing a union query using a view. each has 250 rows. The query takes 20 seconds to return the results. no joins or anything. the create view simply looks like this:
create view myview as
select id, name from table1
union
select id,name from table2
Where as if i write a stored procedure like below, it returns the rows in 4 seconds.
create table #mytable
( id int, name varchar(30))
insert into #mytable (id, name) select id, name from table1
insert into #mytable (id, name) select id, name from table2
select id,name from #mytable.
I prefer doing in the view since both returns the same result. I tried running dbcc, update statistics. but no luck. Can anyone please help me in this issue.
Good evening:Can anyone give me the low-down on using view from within my stored procedures? I've got some rather complex views that join multiple tables resulting in a staggering SQL query. I then use stored procedures to accept input parameters to determine order by and direction clauses. This results in some rather large "IF ELSE IF ELSE IF..." statements in my SP. Put a complicated SQL query together with lots of IF THEN and it becomes difficult to keep stuff straight in the SP. Therefore, using the view to keep my SQL in one place is an ideal solution. However, and here's the question, does it have a negative impact on speed and/or scalability. We plan to use these SP's within an ASP.NET website that may get a very large amount of traffic. Any advice/help you can give me would be really appreciated. Thanks! - Future Daddy
I have been having troubling getting at views and stored proceduers with ADO objects while developing in VB.
I can get a list of the views and stored procedures, but I don't know how to actually get the text values of them... i would like the text so that I can parse/compare them agianst one another...
This maybe a simple question, I'm using reporting services to make a report, question is can I write a stored procedure that queries from a join of two views instead of two tables?
I'm having trouble getting my table data into the reportable state I want it, and I think organising into views might be easier.
Hi everybody,I am trying to alter a view inside a Stored Procedure and sql server is not allowing me to do so.Can we not have an alter view inside a Stored Procedure?Here is the code: CREATE PROCEDURE dbo.[UPDATE_VIEW_LINEITEMALLOTMENT] -- Add the parameters for the stored procedure here@MAINID int,@BE VARCHAR(8)ASBEGIN -- SET NOCOUNT ON added to prevent extra result sets from -- interfering with SELECT statements. --SET NOCOUNT ON; ALTER VIEW [Budget_Management_System].[dbo].[LineItem_OCAFund] AS SELECT TOP (100) PERCENT SUM(dbo.ALL_OCAFUND.AMOUNT) AS Expr2, dbo.APP_LINEITEM.LINENUM, dbo.APP_LINEITEM.PC, dbo.APP_LINEITEM.CATEGORY, dbo.APP_LINEITEM.ROWID, dbo.APP_LINEITEM.MAINID FROM dbo.APP_LINEITEM INNER JOIN dbo.ALL_ORG ON dbo.APP_LINEITEM.ROWID = dbo.ALL_ORG.LINEITEMID INNER JOIN dbo.ALL_OCAFUND ON dbo.ALL_ORG.ROWID = dbo.ALL_OCAFUND.ORGID INNER JOIN dbo.APP_AMENDMENT ON dbo.ALL_ORG.AMENDMENTID = dbo.APP_AMENDMENT.ROWID AND dbo.ALL_OCAFUND.AMENDMENTID = dbo.APP_AMENDMENT.ROWID GROUP BY dbo.APP_LINEITEM.LINEORDER, dbo.APP_LINEITEM.BE, dbo.APP_LINEITEM.MAINID, dbo.APP_LINEITEM.LINENUM, dbo.APP_LINEITEM.PC, dbo.APP_LINEITEM.CATEGORY, dbo.APP_LINEITEM.ROWID, dbo.APP_AMENDMENT.AMENDMENTORDER HAVING (dbo.APP_LINEITEM.BE = @BE) AND (dbo.APP_LINEITEM.MAINID = @MAINID) AND (dbo.APP_AMENDMENT.AMENDMENTORDER = 1) ORDER BY dbo.APP_LINEITEM.LINEORDER ENDthanks a lot,Murthy here
Hi,I was just wondering if it's possible to access views from stored procedures? I know it doesn't make much sense, but would it be possible? If so, can you also give me some code example?Thanks.
I do all my data access through stored procedures. Is there any benefit in creating views that the stored procedure accesses. At the moment, I tend to just write the select and join within the stored procedure.
I have two databases named A and B. They are exactly same table structure, but the records are different, and we have near 400 stored procedures and over100 views in the database A. Now my question is that how can I transfer all stored procedures and views from database A to database B?
Novice question. Would someone explain tell me what a view is used for? Also I am confused about the difference between a function and a stored procedure. They both seem like functions to me.
Please could someone explain to me the differences between a storedprocedure and a view.The reason for this question is I have two almost identical ASP pages.Both get the same results but one uses a stored procedure and one usesa view. If the query returns no results the 'view page' generateserrors and therefore I have to check for BOF and EOF, whereas the'stored procedure page' does not generate errors and instead wouldappear to return a recordset with 0 entries.Thanks in advanceNeil.
Can Microsoft Access access a stored procedure on the SQL Server? If not, is there any way to assign a parameter to a view? I can link to a view in Access, but I cannot link to a procedure. I need to SELECT * from aTable WHERE ID = [@PassidInID]. Any way to do this through Access? The reason for this, is because I am trying to run an existing query (which is very busy - using other queries with queries in them etc.), and I keep getting an ODBC error. I am thinking that if I move the queries to the SQL Server, it may get rid of this error? It's a 2-tier app I have. Tables on the server, forms, queries, and everything else in Access. Thanks in advance - I hope.
I have a multiple table dataset that needs to be returned, with at least 5 joins, some inner, some left outer.
Currently, this is done via a parameterized stored prodedure, which is used fairly frequently. The parameters only affect the where clause, not the joins.
Would it be better to create the view with the joins already done, then pass in the parameters with the stored procedure? Which is better for overall performance? Which is better for quicker response times to the calling asp.net application?
This is a general question regarding the use of view and storedprocedures. I'm fairly new to databases and SQL.I've created a SQL database using an Access Data Project ("ADP") andI'm satified with the table structure. I've moved on to building somefront ends for our users.I'm running into situations where I want subreports to be built fromqueries [views or stored procedures-I don't know which to use so I usethe term query] that are dependent on the values in other controls.I've played with stored procedures and I've figured out how to sendcriteria to a stored procedure and then dynamically change the recordsource of a subreport.However, I'm running into cases where I can't add records to theresults of a stored procedure. The table I'm running a stored procedureon has five fields: (1) Primary Key for each record, (2) FundID that'sa primary key in another table, (3) CompanyID that's a primary key inanother table, (4) Attribute 1 of the (Fund/Company) and (5) Attribute2 of the (Fund/Company).The stored procedure filters the set of Fund/Companies based on aFundID from a form. I can update this stored procedure. However, forusers, they would like to see the Fund Name from the table that hasunique FundIDs. As soon as I include that into the stored procedure, Ican no longer add records.My questions are many:1. Is there a primer online that discusses the theory behind myquestion? Recordsets, updatability, working with recordsets in forms?2. What are some best practices for developing subreports, combo boxes,list boxes, etc. where the data is dependent on the values in a control3. I'm struggling with the best ways to grab objects on a form. If I'mon the main form I'm comfortable working with theMe.__object__.__sub-oject routine. However, if I'm in one subform whereI need another subform to change based on the record I'm in, I feelthat my code to get at the subform is very klunky..forms.main form name.sub form name.form.record sourceI don't even know how I figured out the "form" part before recordsource. Again, are there some basic rules or guides about navigatingthrough forms in VBA?4. Should I be developing front ends in some other environment?I know it's a lot, but all the advice from the newsgroups seems topresuppose some knowledge about how ADP, ADO, ODBC..blah blah and Ican't seem to find any documents about ADP and SQL.
The purpose for my questions is accessing these technologies fromapplications. I develop both applications and databases. Working withMicrosoft C#.NET and Microsoft SQL Server 2000 Production and 2005 TestEnvironments.What is the purpose of a view if I can just copy the vode from a viewand put it into a stored procedure?Should I be accessing views from stored procedures?Should I use views to get information? and Stored Procedures forInserts, Updates and Deletes?What are the performance differences between the two?Thank you for any and all information.SBProgrammer
I would like to use the view of the company data in the following stored procedures
without needing to pass a value into the CompanyID identity column. Is there a way to do this? The following code contains the view, the insert trigger on the view, and the desired stored procedures.
Also, this code is given me problem as well the error message says it cannot convert varchar to int. This code is located in the insert trigger.
INSERT INTO State(StateName) VALUES(@StateName)
Here is the code of the company view, notice the C.CompanyID it is used in the GetCompany stored procedure.
FROM Company AS C INNER JOIN Address AS A ON C.AddressID = A.AddressID INNER JOIN State AS S ON A.StateID = S.StateID INNER JOIN Phone AS P ON C.PhoneID = P.PhoneID
Here is code for the insert trigger on the view
CREATE TRIGGER InsertTriggerOnCustomerView ON ViewOfCompany INSTEAD OF INSERT AS BEGIN
DECLARE @CompanyName VARCHAR(128) DECLARE @AddressID INT DECLARE @Street VARCHAR(256) DECLARE @City VARCHAR(128) DECLARE @StateID INT DECLARE @StateName VARCHAR(128) DECLARE @ZipCode INT DECLARE @Country VARCHAR(128) DECLARE @PhoneID INT DECLARE @PhoneNumber VARCHAR(32) --DECLARE @CompanyID INT
INSERT INTO Address(Street, City, StateID, Country, ZipCode) VALUES(@Street, @City, @StateID, @ZipCode, @Country)
SET @AddressID = SCOPE_IDENTITY()
INSERT INTO Phone(PhoneNumber) VALUES(@PhoneNumber)
SET @PhoneID = SCOPE_IDENTITY()
INSERT INTO Company(CompanyName, AddressID, PhoneID) VALUES(@CompanyName, @AddressID, @PhoneID)
END
The stored procedures are here.
CREATE PROCEDURE GetCompany ( @CompanyID INT ) AS BEGIN SELECT CompanyName,Street, City, StateName, ZipCode, Country, PhoneNumber FROM ViewOfCompany WHERE CompanyID = @CompanyID END GO
CREATE PROCEDURE AddCompany ( @CompanyName VARCHAR(128), @Street VARCHAR(256), @City VARCHAR(128), @StateName VARCHAR(128), @ZipCode VARCHAR(128), @Country VARCHAR(128), @PhoneNumber VARCHAR(32) ) AS BEGIN INSERT INTO ViewOfCompany VALUES(@CompanyName, @Street, @City, @StateName, @ZipCode, @Country, @PhoneNumber) END GO
Hi,Right, i have a fairly good understanding of SQL. However, i have a fairly basic understanding of SQL Server.I know Storedprocedures are really good and i'm starting to use them. I understand they are good for making inserting, updating very easy.However when you look at a SQL Server database you get various folder, this leaves me a little confused with what they are all used for? whats the difference between these?Thanks in advance!sorry for the basic question, i'll try to challange you next time
We have recently begun using transactional replication to keep the data in our SQL Servers synchronized in a geographically dispersed environment. We replicate our tables but we have never replicated views, stored procedures, or user functions in our production systems. We are thinking of doing so but wonder if the overhead of running the replication agents doesn't outweigh the benefits of having replication assist with the occassional change to these design elements.
Is anyone on this forum replicating views, sprocs, and user functions? What has your experience been?
Hi all--I used the following type of script to migrate tables, views and stored procedures from 'dbo' to 'hqmsuser': alter authorization on dbo.PK_T_PQ_MASTER to HQMSUSER alter schema HQMSUSER transfer dbo.PK_T_PQ_MASTER go
This was per recommendations from the BOL to use instead of the 'sp_changeobjectowner' procedure. I returned the following error:
Msg 15346, Level 16, State 1, Line 3 Cannot change owner for an object that is owned by a parent object. Change the owner of the parent object instead. Msg 15347, Level 16, State 1, Line 4 Cannot transfer an object that is owned by a parent object.
How do I find and change the parent object on this from 'dbo' to a non-dbo schema ownership?
I am writing a program that transforms a generic MS SQL database to make it compatible with our application. In order to make the transformation, I have to access all the elements of the generic database programmatically.
I know that the Master database contains all this information. Is there a query that allows me to access the "non-system" tables, sps, views, and functions?
For Tables, I need to know the Name(s) of the tables, the column names, the column type, ALLOW Nulls, Primary Key, Identity Seed settings, and Triggers.
For SPs, I need to know the Name(s) and access the SP source code (assuming it's unencrypted).
For Views, I need to know the Name(s) and access the Views Source
For functions, I need to know the Name(s) and access the function source.
I can see various tables in the Master database from management studio, like sys.objects, sys.tables - which look like they have the info I need. However, when I run a query against master like:
select * from sys.objects .. I get an error:
Msg 208, Level 16, State 1, Line 1 Invalid object name 'sys.objects'.
I've a doubt regarding deploying and creating package (MSI and EXE files) for SQL Stored procedures,views,tables,functions,triggers etc.,just like ASP.NET application by publishing and deploying..Is it possible in the same way for sql objects.If so,pls help me how to do it?
Hi, im developing an action site and im having proplems with stored procedures that are causing extreme load on the server.
PLEASE LOOK AT THE CODE AND TELL ME IF U SEE ANYTHING THAT CAUSES LOW PERFORMANCE OR SOME SUGGESTIONS ON HOW TO INCREASE THE PERFORMANCE. SHOULD I F.E. TAKE THIS LOGIC FROM THE DB AND TRY DOING IT IN c#?
The action-site uses an auto-bid-feature that is causing a load. Basically when a user makes a bid, i have to loop through all other users that have a bid in the product and automatically increase a bid untill it matches the highest bid of a user.
F.e. a user bids auto-bid $2000 in a product where another user has a $2100 bid in the product and the current bid is $1200. So the SP loops through the users increases the bid-history untill it mathces the highest bid of a user.
- $1250 - $1300 - $1350 - etc...
This is the SP that loops through the users and calls another function each time to increase the bid in the bid-history.
------------------------------------------
CREATE PROC HaekkaBodIUppbodi @uID INT AS
DECLARE @curUpphaed DECIMAL SELECT @curUpphaed = MAX(upphaed) FROM bodsaga WHERE uppbod_ID = @uID
IF(@curUpphaed IS null) BEGIN SET @curUpphaed = 0 END
DECLARE @curCount INT SELECT @curCount = COUNT(kaupandi_netfang) FROM bod WHERE upphaed > @curUpphaed AND uppbod_ID = @uID
WHILE(@curCount>0) BEGIN -- skilgreinum notanda breytu DECLARE @notandi NVARCHAR(255)
IF(@curCount<2) BEGIN SELECT @notandi = kaupandi_netfang FROM bod WHERE upphaed > @curUpphaed AND uppbod_ID = @uID
EXEC HaekkaBodAVoru @uID, @notandi
BREAK; END
-- búum til cursor fyrir alla notendur -- sem eru með hærri boð en núverandi boð DECLARE crs CURSOR FAST_FORWARD FOR SELECT kaupandi_netfang FROM bod WHERE upphaed > @curUpphaed AND uppbod_ID = @uID ORDER BY dags
-- opnum cursorinn OPEN crs
-- sækjum fyrsta notandann inn í @notandi FETCH NEXT FROM crs INTO @notandi
DECLARE @returnValue INT SET @returnValue = 0
DECLARE @tempValue INT SET @tempValue = 0
-- lúppum í gegnum notendurna WHILE @@FETCH_STATUS = 0 BEGIN EXEC HaekkaBodAVoru @uID, @notandi
FETCH NEXT FROM crs INTO @notandi END
CLOSE crs DEALLOCATE crs
-- sækjum hæstu upphæð í boðsögu SELECT @curUpphaed = MAX(upphaed) FROM bodsaga WHERE uppbod_ID = @uID
SELECT @curCount = COUNT(kaupandi_netfang) FROM bod WHERE upphaed > @curUpphaed AND uppbod_ID = @uID
END
GO
------------------------------------------------------------- And here is the SP that increases the bid...
CREATE PROC HaekkaBodAVoru @uID INT, @notandi NVARCHAR(255) AS
-- Hækkun á uppboði DECLARE @haekkun DECIMAL SELECT @haekkun = haekkun_upphaed FROM uppbod WHERE id = @uID
-- Hæsta boð í vöru DECLARE @haesta_bod DECIMAL SELECT @haesta_bod = MAX(upphaed) FROM bodsaga WHERE uppbod_id = @uID
-- Hæsta boð sem notandi vill gera DECLARE @haesta_bod_notanda DECIMAL SELECT @haesta_bod_notanda = upphaed FROM BOD WHERE kaupandi_netfang = @notandi
-- Seinasti notandi sem gerði boð í uppboðinu DECLARE @seinasti_notandi NVARCHAR(255) SELECT @seinasti_notandi = notandi FROM BODSAGA WHERE uppbod_id = @uID
DECLARE @upphaed DECIMAL SET @upphaed = @haekkun
-- Ef búið að bjóða í vöruna IF(@haesta_bod IS NOT null) BEGIN IF(@haesta_bod = @haesta_bod_notanda) BEGIN SET @upphaed = @haesta_bod END ELSE BEGIN SET @upphaed = @haesta_bod + @haekkun END END
-- Ef hæsta boð notanda er sama eða lægra en núverandi verð -- og notandi var ekki sá síðasta til þess að setja inn boð IF(@upphaed <= @haesta_bod_notanda) BEGIN -- Ef notandi hefur EKKI sett inn þessa upphæð áður... IF((SELECT COUNT(*) FROM bodsaga WHERE notandi = @notandi AND upphaed = @upphaed)=0 -- Og notandi á EKKI núverandi hæsta boð AND (SELECT COUNT(*) FROM bodsaga WHERE notandi = @notandi AND upphaed = @haesta_bod)=0) BEGIN INSERT INTO bodsaga VALUES(@uID, @notandi, @upphaed, GETDATE())
I`ve written a pretty complex powerbuilder application and my performance is fair use stored procedures. Is there any way to force sql server 6.5 to reevaluate the current query plan and if it is bad create a new query plan.
Hello folks,I usually use this way to store more procedures inside a single SP:CREATE PROCEDURE usp_MyProc(@usp_mode int)ASIF @usp_mode = 1BEGINENDIF @usp_mode = 2BEGINENDand so on...My question is about performance: I don't know deeply how SP executionruns, is there a performance fall following this way? Do you haveother methods or suggestion instead of this way to avoid having dozensof procedures inside my database (obviously I use this method becauseI have many procedures and I prefer a more compact view andorganization)?TIA, tK
What is the overhead of using extended stored procedures?I created a table with 500,000 rows.1) I ran a select on two columns and it runs in about 5 seconds.2) I ran a select on one column and called an UDF (it returns aconstant string) and it takes 10 seconds.3) I ran a select on one column and called a UDF that calls an extendedstored procedure that returns a string and it takes 65 seconds.I also tried running test 3 with 4 concurrent clients and each clienttakes about 120 seconds.
I am working on a technical design of data integration ETL package which will be moving data from SQL Server Source to DB2 destination. I currently have two options, when moving data to DB2(IBM AS400). I can call a AS400 Stored Procedure, and pass in the data to the stored procedure, and perform the insert processing within the AS400 environment or I could do inserts from SSIS in a DFT and write individually to AS400 tables. My question is from a performance and good practice perspective, which method should I move forward with. I need a possible list of pros- and cons when using AS400 Sproc vs using SQL within SSIS? I would really appreciate response from individuals who have done something similar in the past. Thanks a lot and I am really looking forward to responses.
I'm currently using a system where the number of column in any given table is so great that the columns are often split into additonal tables. I know it's a wierd design but there you go. So I have to deal with tables looking like: MathResult, MathResult_2, MathResult_3, etcEach table is basically the same entity, i.e. it has the same number of rows and each row has the same key value as its peer tables. My question is that should I create a view to bring the tables together, given that a View doesn't seem to have any sort of row-size restriction? Normally I shy away from Views because I've always found them to bring performance down. Any thoughts?
I want to use VIEWS to filter records using a stored procedure to call the VIEW. Will I get a performance boost from using a VIEW, or should I just use the SQL statement that I used to create the VIEW, in my SP and forget about calling a VIEW at all?
Hello, I have a question where the answer may be simply opinion, or there may be strong reasons. I guess that's why I'm asking the question... The question is - when should one create a view, and when should one use a stored procedure? Obviously, when doing multiple queries or passing parameters, you must use a SP. I'm talking about the case of a single query perhaps joins a couple of tables.
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!!
I have a query which retrieves data from 4-5 tables. To restrict the acess directly to the tables, views have been created on all these tables. These views are just select * from the tables. Two of these 5 tables have 700 Million and 8 Million rows respectively. And all the tables are having indexes. My issue here is that my query on views take three times more then the duration it takes to retrive data directly from tables. e.g. To retrieve 1 Miliion rows, it takes just 7-10 minutes on tables but on views it takes more than 30 minutes. When I check the query plan for both the options, I can see that indexes are being picked up but still the views are very slow.
Creating indexes on views is not feasible option for me as it requires DDL changes and so much testing efforts.
