Views Vs Complex Joins In Stored Procedures
Oct 17, 2007
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?
Thanks in advance,
Leah
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Sep 27, 2006
The code below is from a nested view, which I've read should be avoided. I've also noticed GETDATE() is used, which I believe causes GETDATE() to be executed for every record selected (correct me if I'm wrong). I'm also guessing a JOIN containing a UNION against a SELECT statement is not a good idea. What other problems do you notice?
SELECT trans.Entry_Code, trans.D_C, trans.ADP_Security_# ,
trans.TRID, trans.Batch_Code, trans.Last_Money,
null as Shares, Settle_date as Process_Date,
null as Closing_Price, trans.Dwnld_Date, trans.Acnt,
null as Mktval,
cast(Null as varchar(20)) as Cusip_#,
ACT.dbo.account.account_key AS account_key
FROM (SELECT * FROM ADPDBBOOK.dbo.YTD05B
WHERE (DATEDIFF(mm, Process_Date, GETDATE()) <= 15)
UNION
SELECT * FROM ADPDBBOOK.dbo.YTD06B) trans
INNER JOIN ACT_DATA.dbo.account
ON ACT_DATA.dbo.account.account_key = RIGHT(trans.Acnt, 5)
INNER JOIN tbl_Accounts_TransactionalData
ON trans.Acnt = tbl_Accounts_TransactionalData.Acnt
Thanks, Dave
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Jan 17, 2008
Can you help me in one more thing When ever I see a complex Stored procedure I feel scared.But I can see people using print command use to debug it and also some are using sql profiler to trace the database updates/changes.I am scared how can they do this so effortlessely.Actally I don't know these two technique can you please help me with example script.
Regards
sumit
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Mar 17, 2008
Hello Frnds.....I want to know What are the complex Stored Procedures or Complex T-SQL Querries ?
Can Anybody give me the examples of Stored Procedures or Complex T-SQL Querries ?
How can they be written in SQL 2000or SQL 2005 ?
Waiting for reply.......
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Mar 17, 2006
I am making a stored procedure, and I need to set some variables based on the results of a JOIN statement.
If I something like:
SELECT table.field, table.field2 FROM table INNER JOIN table2 ON table.field = string
How could I get the results and set them in variables?
Any help would be greatly appreciated.
GKC
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Apr 16, 2007
Hi all,
I had developed all my reports using CRXI and stored procedures of MSSQL 2000. Now I am migrating from CRXI to SSRS. But i have a problem because of my report stored procedures. These stored procedures are complex and nested. When i try to use procedures in a report, it gives a error. When i comment out my EXEC line in my procedures, it goes OK.
Please help me to do this ?
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Jan 1, 2005
First, does anyone know any good SQL Server sites with articles and whatnot on query design, etc. Not so much basic "How to get data out of your table", but more complex topics like conditional stored procedures, working with triggers, etc. The MSDN is helpful but I often have trouble understanding what's going on.
And second, any pointers (or links) on how I can go about having a stored procedure query a pair of product tables to get information to display in my shopping cart? I've got:
Cart Items StdProducts CustomProducts
----------- ------------- -----------------
partID stdpartID custompartID
IsCustom (Bit)
description description
So depending on if the 'IsCustom' field is True or False, I want to join the [cartitems].[partID] to either the [StdProducts].[stdpartID] or the [CustomProducts].[custompartID] to get the description and other information.
Eventually, I'll probably need to branch this type of procedure out even further (not just either/or scenario) to include the option of pointing to 6-12 different child tables depending on criteria within the parent table for a different scenario. Depending on performance, I could either hard code in the various child tables or have another table containing the table names and the appropriate key that would indicate which table to use.
Hopefully that made some sense, since I'm not entirely positive how to go about this type of thing or what you would call whatever I'm trying to do (and thus what I would be searching for).
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Jul 22, 2007
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
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Feb 15, 2001
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...
Any thoughts or help on this?
I would really appreciate the help!
Matt
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Feb 16, 2007
Hello,
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.
Thanks for any help.
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Apr 18, 2007
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
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Sep 7, 2007
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.
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Nov 8, 2007
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.
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Oct 9, 2002
Is there a way to script views and/or stored procedures from Query Analyzer? I am hoping to do this as part of a stored procedure.
Thanks!
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Oct 19, 2001
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?
Thank you very much!
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Dec 1, 2005
Hi All,
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.
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Jul 20, 2005
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.
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Jun 18, 2007
Hi
what is the diffrence between views and stored procedures in sqlserver 2005
thanks in advance.
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Sep 25, 2007
Can you create views within a stored procedure?
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Mar 13, 2008
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.
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Nov 3, 2000
We find that a delete command on a table where the rows to be deleted involve an inner join between the table and a view formed with an outer join sometimes works, sometimes gives error 625.
If the delete is recoded to use the join key word instead of the = sign
then it alway gives error 4425.
625 21 0 Could not retrieve row from logical page %S_PGID by RID because the entry in the offset table (%d) for that RID (%d) is less than or equal to 0. 1033
4425 16 0 Cannot specify outer join operators in a query containing joined tables. View '%.*ls' contains outer join operators.
The delete with a correleted sub query instead of a join works.
Error 4425 text would imply that joins with view formed by outer joins should be avoided.
Any ideas on the principles involved here.
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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.
Thanks
Ramesh
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Jul 23, 2005
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.
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Jan 27, 2006
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
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May 9, 2006
Hi,
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.
SELECT C.CompanyID, C.CompanyName, A.Street, A.City, S.StateName, A.ZipCode, A.Country, P.PhoneNumber
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
SELECT
--@CompanyID = CompanyID,
@CompanyName = CompanyName,
@Street = Street,
@City = City,
@StateName = StateName,
@ZipCode = ZipCode,
@Country = Country,
@PhoneNumber = PhoneNumber
FROM INSERTED
INSERT INTO State(StateName)
VALUES(@StateName)
SET @StateID = @@IDENTITY
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
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Mar 22, 2006
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
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Jul 22, 2007
Greetings,
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?
Thanks for any ideas that you share.
BCB
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Feb 20, 2007
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?
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May 21, 2008
Hi Folks,
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'.
Thank you in advance.
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Nov 9, 2007
Hi,
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?
Thanks in advance.
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May 1, 2008
Ok I have a complex query that works great, but now I need to join yet another table but the problem is, the value that links it to the rest of the query is a value that is returned from a case statement earlier in the query...
For Example...
SELECT var1, var2, var3,
CASE T1.Number WHEN 0 THEN T2.Result ELSE T3.Result END as var4
FROM TABLE1 T1
LEFT OUTER JOIN TABLE2 T2 on T2.Value=T1.Value
LEFT OUTER JOIN TABLE3 T3 on T3.Value=T1.Value2
Above is a generalized, much smaller example of my working Query.
Now what I need to do is join TABLE4 but the value I need to connect it to the rest of the query is var4, which can come from 2 different places depending on the value of T1.Number
Basically the logic I need to make it work is to either have a case statement in my JOIN. Like, 'LEFT OUTER JOIN TABLE4 on T4.Value=(CASE T1.Number WHEN 0 THEN T2.Result ELSE T3.Result END)'
Is this even possible and if so, how? I need to keep the logic in the main query to preserve performance...
Thank you in advance,
Casey
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Sep 15, 2006
How to find maximum value from two tables have the same field name?
For example:
Table -1 has field calcuated_price and its max value is 3500 and then Table -2 has
same field name calcuated_price has max value is 3000.
Nishith
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Oct 30, 2007
Hi,
I'm trying to replicate a SQL join across two seperate data sources in SSIS. If I were to write SQL to do this, it would be as follows:
SELECT Costs.CostRateEntryId,
Costs.UserId,
Costs.HourlyRate * 8 AS DailyCostRate,
Dates.DateKey,
Dates.ActualDate,
FROM Costs
INNER JOIN Dates ON Dates.ActualDate >= Costs.EffectiveDate AND Dates.ActualDate <= Costs.EndDate
Unfortunately, as the tables 'Dates' and 'Costs' are in two seperate SQL2005 systems, I can't really do this. I was hoping that it could be achieved in SSIS, but I cant seem to find any way that I can do a join that's <= or >=.
Can anyone help?
Thanks
Jeremy
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