I'd like to write a query that lists all the views for a particular database, can anyone help me out with this?
I've played around with the information_schema.views that the online books references, but I can't get it to return a list of the views? I know I can just
look at the views through enterprise manager, but I need to do this through a query. Many thanks
Fellow database developers,I would like to draw on your experience with views. I have a databasethat includes many views. Sometimes, views contains other views, andthose views in turn may contain views. In fact, I have some views inmy database that are a product of nested views of up to 6 levels deep!The reason we did this was.1. Object-oriented in nature. Makes it easy to work with them.2. Changing an underlying view (adding new fields, removing etc),automatically the higher up views inherit this new information. Thismake maintenance very easy.3. These nested views are only ever used for the reporting side of ourapplication, not for the day-to-day database use by the application.We use Crystal Reports and Crystal is smart enough (can't believe Ijust said that about Crystal) to only pull back the fields that arebeing accessed by the report. In other words, Crystal will issue aSelect field1, field2, field3 from ReportingView Where .... eventhough "ReportingView" contains a long list of fields.Problems I can see.1. Parent views generally use "Select * From childview". This meansthat we have to execute a "sp_refreshview" command against all viewswhenever child views are altered.2. Parent views return a lot of information that isn't necessarilyused.3. Makes it harder to track down exactly where the information iscoming from. You have to drill right through to the child view to seethe raw table joins etc.Does anyone have any comments on this database design? I would love tohear your opinions and tales from the trenches.Best regards,Rod.
View 15 Replies View RelatedDoes anyone know how to count rows of data from 1 table that meet one or two different criteria and then get the probability of occurance for that criteria ... as an output column?
Do I use 'Having' or temp tables or Views?
Here is my output for now. I am trying to solve for 'Prob' - everything else works on it's own.Craig
SELECT Wins_Lng/Trades_Lng as Prob
FROM Transactions
SELECT Count(Ticker) as Trades_Lng
FROM Transactions
WHERE TransType='C' AND DateDiff(day,BaseDate,GetDate())<=100 AND TransKind='B' (SELECT COUNT(Ticker)as Wins_Lng
FROM TransactionsWHERE Transkind='B' AND TransType='C' AND DateDiff(day,BaseDate,GetDate())<=100 AND Profit_Lng>=0)
I have a table which records the amount of times a user views a webpage
tblpageview
id
pagename
view_date
userid
I would like to have a query that returns the unique pagename and the amount of times that page has been viewed. I've had a go with count etc. but cant seem to get it. Anyone can help?
Here's the setup:
Client database has a complex view with eight nested subqueries used to return "dashboard" information. The application code uses NHibernate to call and filter the view with three parameters, one of which is the CustomerID.
A certain customer, (the biggest client), has more than ten times the number of records of the next largest customer.
Occasionally, the database reaches a state where when this particular customer tries to run the dashboard view, the application times out.
If I open up the view and re-save it, all is well again for a few days.
What gives?
Views are supposedly not pre-compiled, though I know that 2000 stores bits and pieces of query plans.
Any ideas on what causes this and what to do about it?
In SQL server 2008 how can I run the same query against each view in that database?
One database about 75 views.
Or even something like
Select 'yes' from view
Where shipping_status = 'delayed'
And return a list of view names so I know which views to query against.
I ran
Code:
select name from sysobjects where type = v
And got a list of my views. How can I now run my SQL statement against the list to see which views contain the info?
We know that a query execution plan exists for Stored Procedures in the Procedure Cache.
What about Views? Does a view have a query execution plan? We know that a View is a virtual table and that virtual table is populated
when the view is induced but does it have a Query Execution Plan?
I have tried to find this info for Views in BOL but I cannot see it anywher in BOL.
Ok, What I want to achieve is plain stuff, I want to join 2 views on a common key.It all works well with the SQL2000 Query Analyzer, but not trough ADO.NET or should I say my webapplication.With that I mean that my query return rows when executed from SQL2000 Query Analyzer, But not when used in my application or Executed from the Visual Studio Server Explorer.I have struggled with this one for several hours, I cant get this one right.So lets bring in the one who actually know what his doing View1: 1 select
2 cast((PS.RabattProsent/100.00)*PS.Pris AS decimal(11,2)) AS Rabatt
3 ,cast((PS.MVAProsent/100.00)*PS.Pris AS decimal(11,2)) AS MVA
4 ,cast(PS.Antall * ((PS.Pris*(100-PS.RabattProsent))/100)*((PS.MvaProsent/100.00)+1) AS decimal(11,2)) AS Belop
5 ,PS.*
6 ,K.Kunde_ID
7 FROM
8 tbl_ProduktSalg AS PS
9 INNER JOIN
10 tbl_Ordre AS O
11 ON
12 O.Ordre_ID = PS.Ordre_ID
13 INNER JOIN
14 tbl_Kunde AS K
15 ON
16 K.Kunde_ID = O.Kunde_IDView2: 1 SELECT
2 PS.Ordre_ID
3 ,SUM(cast((PS.RabattProsent/100.00)*PS.Pris AS decimal(11,2))) AS TotalRabatt
4 ,SUM(cast(PS.Antall * ((PS.Pris*(100-PS.RabattProsent))/100)*((PS.MvaProsent/100.00)+1) AS decimal(11,2))) AS TotalBelop
5 ,SUM(PS.Pris) AS TotalPris
6 ,SUM(cast((PS.MVAProsent/100.00)*PS.Pris AS decimal(11,2))) AS TotalMVA
7 FROM
8 tbl_ProduktSalg AS PS
9 GROUP BY
10 PS.Ordre_ID
MyQuery/SPRC: 1 create procedure %PROC% (@Kunde_ID int, @Ordre_ID int)
2 as
3 begin
4 SELECT
5 v_PSD.*
6 ,v_OTS.TotalRabatt
7 ,v_OTS.TotalBelop
8 ,v_OTS.TotalPris
9 ,v_OTS.TotalMVA
10 FROM
11 v_ProduktSalgDetaljer AS v_PSD
12 INNER JOIN
13 v_OrdreTotalSum AS v_OTS
14 ON
15 v_OTS.Ordre_ID = v_PSD.Ordre_ID
16 WHERE
17 v_PSD.Kunde_ID = @Kunde_ID
18 AND
19 v_PSD.Ordre_ID = @Ordre_ID
20
21 end
22
When working with databases containing myriad of huge tables, I am very much tempted to create categorized views on those tables in order to simplify and facilitate data query programming? Some developers I talk to say such views generally slow down query performance. Is this true?
Thanks.
Over the years I've read and experienced where joining more then 5 tables can lead to performance problems. This number can vary based upon the amount of data in each table, if and how indexes are used and the complexity of the query, but 5 has always been a good rule of thumb. Unfortunately I do not know what rule to apply in regards to joing views.
A developer has experienced timeout problems periodically when opening a view in EM or when running the code which makes-up the view. I decided to look at the view and noticed it references tables and views, which reference more views, which in turn reference other views. In all the initial view references 5 tables and 8 views directly and indirectly, with some of the views containing function calls. What are your thoughts on how many views and tables are too many when it comes to joins and query performance.
Thanks, Dave
I've just installed SQL Server 2005 Developer Edition, upgraded from SQL Server 2000, and have encountered a problem in trying to query against the System Catalogs.
I've tried SELECT * FROM sys.objects in addition to SELECT suser_name( role_principal_id ) FROM sys.server_role_members. In both cases I receive the following error: Invalid object name 'sys.objects' or 'sys.server_role_members' in the second example.
I changed the properties of the registration for my local db instance to use SQL authentication in lieu of Windows authentication. I used the sa login account to see if that made a difference, no go.
Can someone *please* tell me what I'm doing wrong here?
I would also like to know if it's possible to run a query confirming the user account I'm logged in to the system as.
Thanks!
Yes, I do know what this means and why the error is thrown but this is not my question.
I have two servers that are both running Windows Server 2003 and SQL Server 200 SP3. Below are the results from both servers using @@version
Sever 1 (BB)
Microsoft SQL Server 2000 - 8.00.760 (Intel X86)
Dec 17 2002 14:22:05
Copyright (c) 1988-2003 Microsoft Corporation
Developer Edition on Windows NT 5.2 (Build 3790: Service Pack 1)
Server 2 (Genesis)
Microsoft SQL Server 2000 - 8.00.760 (Intel X86)
Dec 17 2002 14:22:05
Copyright (c) 1988-2003 Microsoft Corporation
Developer Edition on Windows NT 5.2 (Build 3790: Service Pack 1)
These servers are identical or so it seems. I've got a real ugly query that uses views and a derived table to get results. The problem is the 256 limit message only comes up on one server and on the other (Genesis) the query runs fine. I get the error though it reads a 260 limit on a box with SP4 applied. I've also run the query on a box that is Windows 2003, sql2k and sp4 and the query runs but not on a similar server here. This is all very odd. Please note that the database structure, views, etc are all exactly the same as far as I know.
Any suggestions? There seems to be no pattern between versions of Windows and/or SP levels.
Hi,
I have come across this problem with SQL server both on 2000 and 2005. I am stating an example here.
I have two partitioned tables and a view on top of both tables as below:
create table [dbo].[Table_1]
(
[TableID] INTEGER PRIMARY KEY NONCLUSTERED
CHECK NOT FOR REPLICATION ([TableID] BETWEEN 1 AND 999),
[AnyOtherColumn] int NOT NULL ,
) ON [Primary]
GO
create table [dbo].[Table_2]
(
[TableID] INTEGER PRIMARY KEY NONCLUSTERED
CHECK NOT FOR REPLICATION ([TableID] BETWEEN 1000 AND 1999),
[AnyOtherColumn] int NOT NULL ,
) ON [Primary]
GO
create view TableView
as
select * from Table_1
union all
select * from Table_2
GO
Note the NOT FOR REPLICATION clause on the check constraint on the TableID column.
I then ran the query execution plan for the following query on both SQL server 2000 and 2005.
select * from TableView where TableID = 10
On both the versions the execution plan shows and Index seek on both the tables in the view. This means that my partitioning is not working. If I remove the primary key constraint from the TableID column, the same query on the view shows a table scan on all the underlying tables. This is even worse.
Next, create the same tables and views again, now without the NOT FOR REPLICATION clause on the check constraint as show below:
create table [dbo].[Table_1]
(
[TableID] INTEGER PRIMARY KEY NONCLUSTERED
CHECK ([TableID] BETWEEN 1 AND 999),
[AnyOtherColumn] int NOT NULL ,
) ON [Primary]
GO
create table [dbo].[Table_2]
(
[TableID] INTEGER PRIMARY KEY NONCLUSTERED
CHECK ([TableID] BETWEEN 1000 AND 1999),
[AnyOtherColumn] int NOT NULL ,
) ON [Primary]
GO
create view TableView
as
select * from Table_1
union all
select * from Table_2
GO
Now run the query execution plan for the same query again.
select * from TableView where TableID = 10
This time you would see that it does an index scan only on the first parititon table. This time it proves that the partitioning works.
I would like to know why does the NOT FOR REPLICATION clause in the check constraint make such a huge difference?
Is it a bug in SQL server?
Or am I missing any thing?
Any help appreciated.
Thanks
I've been using partitioned views in the past and used the check constraint in the source tables to make sure the only the table with the condition in the where clause on the view was used. In SQL Server 2012 this was working just fine (I had to do some tricks to suppress parameter sniffing, but it was working correct after doing that). Now I've been installing SQL Server 2014 Developer and used exactly the same logic and in the actual query plan it is still using the other tables. I've tried the following things to avoid this:
- OPTION (RECOMPILE)
- Using dynamic SQL to pass the parameter value as a static string to avoid sniffing.
To explain wat I'm doing is this:
1. I have 3 servers with the same source tables, the only difference in the tables is one column with the server name.
2. I've created a CHECK CONSTRAINT on the server name column on each server.
3. On one of the three server (in my case server 3) I've setup linked server connections to Server 1 and 2.
4. On Server 3 I've created a partioned view that is build up like this:
SELECT * FROM [server1].[database].[dbo].[table]
UNION ALL SELECT * FROM [server2].[database].[dbo].[table]
UNION ALL SELECT * FROM [server3].[database].[dbo].[table]5. To query the partioned view I use a query like this:
SELECT *
FROM [database].[dbo].[partioned_view_name]
WHERE [server_name] = 'Server2'
Now when I look at the execution plan on the 2014 environment it is still using all the servers instead of just Server2 like it should be. The strange thing is that SQL 2008 and 2012 are working just fine but 2014 seems not to use the correct plan.
I have a dynamic SQL query that uses various indexes and views.
When a user wants to filter records based on last one day, last one week, last 30 days ...etc.. i use the following code:
@date is an integer.
begindate is datetime format.
begindate > cast(((select dateadd(d,@Date,GETDATE()))) as varchar(20))
The above code slows my query performance by at least 400%!
Would it be faster to add a computed column to my table, using the suggested method in the link below?
[URL] ....
Then i could add an indexed view to improve performance, or can this be done another way?
Which is more efficient? One large view that joins >=10 tables, or a few smaller views that join only the tables needed for individual pages?
View 1 Replies View Relatedscript to get the list of views in a database, involving tables from other databases?I AM using SQL server 2014
View 2 Replies View RelatedI am trying to write some admin only procedures which will collect information to one of my development server from other production and development servers.
I have created linked servers to access these other servers on the development server. This development server is SQL Server 2000 EE. Other servers which I want to access are 2000 and 2005 (vaious editions)
E.g I have another development server called PRODTEST which is SQL Server 2005 and on the development server I have created a linked server pointing to PRODTEST called TESTLINKSRV. I want to access new object catalog view (as I do not want to use sysobjects)
When I run the following query
SELECT * FROM [TESTLINKSRV].[DBNAME].[sys].[objects]
I get following error,
OLE DB error trace [Non-interface error: OLE DB provider does not contain the table: ProviderName=' TESTLINKSRV ', TableName='" DBNAME "."sys"."objects"'].
Msg 7314, Level 16, State 1, Line 1
OLE DB provider ' TESTLINKSRV ' does not contain table '"DBNAME"."sys"."objects"'. The table either does not exist or the current user does not have permissions on that table.
So I try this query
SELECT * FROM [TESTLINKSRV].[DBNAME].[sys.objects]
and I get following error
Msg 208, Level 16, State 1, Line 1
Invalid object name TESTLINKSRV.DBNAME.sys.objects'.
So bottom line is how do I access catalog views on a 2005 server from a 2000 server using linked server?
I hope someone understands what I am trying to achieve. Please let me know what is it that I am doing wrong.
Thank you
Hello.
Newbie here. I've only been using SQL for about a year now and have some minor questions about sql objects that reference other objects.
We have some views which reference other views in the joins. I will call one the primary view and the one being referenced in the joins as the secondary view.
Recently we made changes to the secondary view.
After which the primary views which referenced it would not work because of this change and had to be 'refreshed' by using drop/create scripts which essentially just dropped it and recreated the exact same view. I do not recall the exact error message that was returned other than it seemed to suggest that it could no longer see the secondary view since it had been changed. Nothing in the primary view was changed in any way, just the secondary.
Some here where I work have suggested off hand that this was a recompile of the primary view because the contents of the secondary changed.
My questions are:
1. Exactly why did this happen and is there a proper name for it when it does?
2. The same problem does not seem to occur when we have stored procedures referencing views in the joins which had just been changed. Why is that?
Thanks for any help on the matter. I greatly appreciate it.
Hello,
to make a report easier I'm developing it using a view of joined views of joined views.
Is there any significant performance penalty as opposed to just having one big select?
Cheers.
Hello There,I'm trying to create a view that has calculations dependent oncalculations, where the problem resides is that each time I make acalculation I must create an intermediate view so I can reference aprevious calculation.for example lets say I have my_table that has columns a & b. now I wanta view that has a & b, c = a + b, and d = c + 1.this is grossly simplified, the calculations I actually use are fairlycomplex and copying / pasting them is out of the question.so what I have is my_view_a which makes column c, and my my_view_finalwhich makes column d (however, in my real application I have 5 of theseviews, a/b/c/d/e/)is there anyway I can consolidate all these views into one? I wasthinking of using a stored procedure with temp tables or somethingalong those lines.I just which I can use the aliases that I create for c in d in onestep.any insight would be greatly appreciated.
View 5 Replies View RelatedHi everyone, I have a problem like this . I have tables Coursegroupcode, which has groupname, codeI have Courses That has Coursename, its code(group code),Term, Course Number Enrollment table which has Foreign keys Term,Course NUmber , SSN I need to get a view like thisI should list all the coursecodes and people enrolled for each course code for selected terms Course Table Primary keys(TERM,COUSE Number)Enrollment Table(Foreign keys) TERM ,COURSE NUMBER, SSNplease help
View 9 Replies View Related Hi!
I need to know if i can build an aspx file on top of an sql view? I
can only see my tables when i connect to the database....
Collette.
Can SQL Views insert to the tables they are created from?I have a database that is not well structured. It has a lot of redundency. What I want to do is create a SQL View that brings in all the data I need and have my application use that new SQL View instead of the data tables. Then I want to be able to insert new information to a SQL View that actualy gets inserted into the tables that the SQL Viewer is created from.Can this be done?Does this make any sense?
View 1 Replies View RelatedI have a query which unions the four select statements.....
the select statements are joined with other tables and views.....
When i execute the query i get ODBC timeout error........
But the strange thing is that if i execute the view individually once and again execute the query it works fine.......and later it justs works fine....
Can anyone tell why is it like that.......
Thanks,
Sajai.
Is there a performance hit running a sp against a view versus a base table. The view just excludes
several of the records based on some criteria, and all the data I will be retreiving is included in
the view. Or should I just stick my criteria in the SP to exclude the data?
Is there a way to imbed "iif"-like logic in a SQL view? "case when" works in regular queries, but apparently is not supported in views...
View 1 Replies View RelatedI have some rather complex views to work with. Do they slow you down? Would it be better to move a view into a stored procedure? Is there any difference between these three solutions?
<B>1.Using views:</b>
Create view X
As
Select Col1, Col2, Col3 from Table1
Go
Create view Y
As
Select Col1, Col2, Col3 from Table2
Go
Create proc Z
As
Select X.Col2, X.Col3, Y.Col2, Y.Col3
From X inner join Y on X.Col1 = X.Col1
GO
<b>2.Using just a stored proc:</b>
Create proc Z
As
Select X.Col2, X.Col3, Y.Col2, Y.Col3
from
(Select Col1, Col2, Col3 from Table1) X inner join
(Select Col1, Col2, Col3 from Table2) Y on X.Col1 = Y.Col1
<b>.Joining tables</b>
Create proc Z
As
Select Table1.Col2, Table1.Col3, Table2.Col1, Table2.Col3
FromTable1 inner join Table2 on Table1.Col1 = Table2.Col1
go
Thank you!
I am struggling with setting up views in SQL Server 7.0 and 2000. What types of views are available.
I have one database with 112 tables and 2308 fields.
Thanks in Advance
I have created a database connected to a GUI using VB 6.0. When editing the views from the front end, do the tables also get updated
Thanks
Hi,
Is there a way to create a view with read only option. i.e the view should not allow the user to perform insert, update or delete action on it.
Please advise,
Thanks,
Sam
Is there any kind of lock on a view in ms sql database?
what happens if one of my users is looking at the view and another one is adding something to the database?
Thanks.
My First time building "Views" in SQL...... I'm trying to figure out how to return a 1 instead of a two when I Count the number of records that return inn my view.
here's what I have;
SELECT TOP 100 PERCENT dbo.tbl_ProcTimesheet.idCalendar, dbo.tbl_ProcTimesheet.erNum, dbo.tbl_ProcTimesheet.PayDate,
COUNT(dbo.tbl_ProcTimesheet.TransAmt) AS Shifts, dbo.tbl_ProcTimesheet.[Employee Number], dbo.tbl_ProcTimesheet.YCode,
dbo.tbl_ProcTimesheet.XCode, dbo.tbl_ProcTimesheet.ZCode, dbo.tbl_ProcTimesheet.eeLink
FROM dbo.tbl_ProcTimesheet INNER JOIN
dbo.tbl_SysVarRestEeShiftPayCodes ON dbo.tbl_ProcTimesheet.Code = dbo.tbl_SysVarRestEeShiftPayCodes.PayCode INNER JOIN
dbo.tbl_SysVarRestEeShiftRules ON dbo.tbl_ProcTimesheet.YCode = dbo.tbl_SysVarRestEeShiftRules.YCode AND
dbo.tbl_ProcTimesheet.ZCode = dbo.tbl_SysVarRestEeShiftRules.ZCode
WHERE (dbo.tbl_ProcTimesheet.Sequence <> N'0') AND (dbo.tbl_ProcTimesheet.Week < 3)
GROUP BY dbo.tbl_ProcTimesheet.idCalendar, dbo.tbl_ProcTimesheet.erNum, dbo.tbl_ProcTimesheet.PayDate, dbo.tbl_ProcTimesheet.TransAmt,
dbo.tbl_SysVarRestEeShiftRules.DailyHours, dbo.tbl_ProcTimesheet.[Employee Number], dbo.tbl_ProcTimesheet.XCode,
dbo.tbl_ProcTimesheet.YCode, dbo.tbl_ProcTimesheet.ZCode, dbo.tbl_ProcTimesheet.eeLink, dbo.tbl_ProcTimesheet.Sequence,
dbo.tbl_ProcTimesheet.Week
HAVING ('IIf' > '1,1,0') AND ('if' > '1,1') AND (dbo.tbl_ProcTimesheet.erNum LIKE N'5648 ') AND (SUM(dbo.tbl_ProcTimesheet.TransAmt)
>= dbo.tbl_SysVarRestEeShiftRules.DailyHours) AND (dbo.tbl_ProcTimesheet.PayDate = CONVERT(DATETIME, '2005-09-06 00:00:00', 102)) AND
(COUNT(dbo.tbl_ProcTimesheet.TransAmt) > 0)
ORDER BY dbo.tbl_ProcTimesheet.PayDate, dbo.tbl_ProcTimesheet.[Employee Number]
When it counts shifts, I only want to return a maximum of i, as in either you had a shoft that day, or not. I gave up trying to figure out the "IF" string in SQL, and for the life of me I can not figure this out.
Does anyone know a good site with info on how to construct an SQL View?