Transact SQL :: Primary Key For A View?
Apr 30, 2015
I am wondering if there is such thing as primary key for a view? Assuming, that my view is based on a single table and it's just a subset of columns (some of them renamed) including PK of the table it's based on.
The reason for my question is this - we're using Reverse POCO generator which automatically generates C# Model class and Configuration file for our tables and views. For the view is lists all the columns as a key and therefore I obviously can not use normal way of updating that view. I posted that as an issue here [URL] .... but I am thinking there is no such thing as the "primary key" for a view.
The query used to generate the classes is extremely complex already but may be it can be modified to get the PK ?
SELECT [Extent1].[SchemaName],
[Extent1].[Name] AS TableName,
[Extent1].[TABLE_TYPE] AS TableType,
[UnionAll1].[Ordinal],
[UnionAll1].[Name] AS ColumnName,
[UnionAll1].[IsNullable],
[UnionAll1].[TypeName],
ISNULL([UnionAll1].[MaxLength],0) AS MaxLength,
[Code] ......
I made a quick Google search and found this [URL] ....
It sounds as an interesting idea to try although I am not sure it will work with POCO Generator. But I'm going to try it now anyway.
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Apr 1, 2004
Been pulling my hair out with this one for some time now ... hope someone out there can help :)
I have a database view which is an aggregated view of a number of tables. Trouble is I need to create what would effectively be a primary key for the view.
Can anyone suggest a sound way of doing this other than moving to Oracle :)
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Aug 15, 2006
Hi All,
I have created a table using VIEWS in SQL server 2005, now i want to be ablle to edit it in a datagrid but i cannot do so as i there is no primary key!
now does anybody know how to set a primary key constraint so i can set one of the fields as a primary key to identify the row?
many thanks
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Aug 10, 2015
What is the difference between the Index and the Primary Key?
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Oct 13, 2015
What is the need of Primary Key if everything can be achieved by Unique Key? Everything that primary key does, Unique key can also fill those things.Why primary key is required?
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May 23, 2007
I have a datasource view DSV1. It points to a datasource DS1 that is considered the "primary".
I have created a Report Model that uses DSV1 (and thus uses DS1)
I created a new datasource, DS2 that I would like to use instead of DS1. (I can't just modify DS1 because if I modify it, it will overwrite it when we go to our Production environment and break that datasource)
So, I can go into DSV1 and change all the references from DS1 to DS2.
But that's where the problem lies.
When I try to build, I get the following error:
"The Table property of the Entity "E1" refers to the Table "dbo_View", which is not in the primary data source."
Somehow, the entity is tied to the "primary" datasource. When I change it back to DS1, everything works fine. Any thoughts? What can I do?
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Jul 13, 2012
We have upgraded our SQL 2008 server to 2012 last month. i've noted since then that many tables that have auto increment primary key bigint field increases by 1 like it should, then for some reason it jumps up by 1000 or even 10000? i have seed adn auto increment set to 1 but doesnt effect it. Is there anything that could be causing the next value to jump that much?
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Jul 6, 2015
I have a table Employee which has following values:
Employee ID Employee Name
1 A
2 B
3 D
Now I have a excel file which will have the new data and I have to write a stored procedure to insert data from Excel file to this table.
Where Employee Id should be auto calculated and the value shud insert from 4.
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Jul 18, 2015
Using TSQL, I have a table that holds filenames of Pictures for products. Different products can be using the same picture. I need to select the filenames for a single product only if it does not exists for a different product.I have tried Where Exists (select FileName From Tbl where
Prod_Id = @var) AND NOT EXISTS(select FileName From Tbl where
Prod_Id != @var) In the Select Statement.
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Aug 20, 2015
I would have to handover my DB with only Primary tables to client as part of SLA.
I am planning to keep these primary tables on a secondary file-group but how-ever, I will still have my procedures on primary file-group.
How can I accomplish this with client having no exposure to my stored procedures.
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Oct 2, 2015
In a special request run, I need to update locker and lock tables in a sql server 2012 database, I have the following 2 table definitions:
CREATE TABLE [dbo].[Locker](
[lockerID] [int] IDENTITY(1,1) NOT NULL,
[schoolID] [int] NOT NULL,
[number] [varchar](10) NOT NULL,
[lockID] [int] NULL
CONSTRAINT [PK_Locker] PRIMARY KEY NONCLUSTERED
[Code] ....
The locker table is the main table and the lock table is the secondary table. I need to add 500 new locker numbers that the user has given to me to place in the locker table and is uniquely defined by LockerID. I also need to add 500 new rows to the corresponding lock table that is uniquely defined in the lock table and identified by the lockid.
Since lockid is a key value in the lock table and is uniquely defined in the locker table, I would like to know how to update the lock table with the 500 new rows. I would then like to take value of lockid (from lock table for the 500 new rows that were created) and uniquely place those 500 lockids uniquely into the 500 rows that were created for the lock table.
I have sql that looks like the following so far:
declare @SchoolID int = 999
insert into test.dbo.Locker ( [schoolID], [number])
select distinct LKR.schoolID, A.lockerNumber
FROM [InputTable] A
JOIN test.dbo.School SCH ON A.schoolnumber = SCH.type and A.schoolnumber = @SchoolNumber
JOIN test.dbo.Locker LKR ON SCH.schoolID = LKR.schoolID
AND A.lockerNumber not in (select number from test.dbo.Locker where schoolID = @SchoolID)
order by LKR.schoolID, A.lockerNumber
I am not certain how to complete the rest of the task of placing lockerid uniquely into lock and locker tables? Thus can you either modify the sql that I just listed above and/or come up with some new sql that will show me how to accomplish my goal?
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Apr 23, 2015
I've attempted to identify a primary and foreign key in these two tables, but I am getting a bunch of errors re duplicate keys and column names needing to be unique.Perhaps the primary and foreign key I have identified don't meet the criteria?
CREATE TABLE StockNames
(
-- Added Primary key to [stock_symbol]
[stock_symbol] VARCHAR(5) NOT NULL CONSTRAINT PK_stock_symbol PRIMARY KEY,
[stock_name] VARCHAR(150) NOT NULL,
[stock_exchange] VARCHAR(50) NOT NULL,
[code].....
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Oct 2, 2015
I am trying to drop a primary key on column LID and then create a clustered index on a new identity column ID and then add the primary key back on the LID. I am not able to do so due the table being in replication. here is the error:
Cannot alter the table '' because it is being published for replication.
How do I get past the error and create the Clustered Index on ID column in both publisher and subscriber?
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Jun 12, 2015
I need swapping values in rows of tables based on primary.
I will explain my scenario with the below example.
ID Name Value
--- -------- --------
1 name1 202
2 name1 203
3 name2 203
4 name2 202
5 name3 204
In the above example, I want to swap Value 202 and 203 but its not straight forward. I want to swap in a way that, I need to group by Name column and check if 203 comes first in the group then swap else don't.
In the above example, I need to swap the values for name2 but not for name1. Below query is performing a straight forward swap.
UPDATE TblTest
SET Value
=
CASE
WHEN
Value
=202
THEN203
ELSE202
END
WHERE
Valuein(202,203)
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Aug 4, 2015
I have imported a whole bunch of tables. Most of them have an ID (int) column. Is there a way to set the ID columns across all tables to auto increment Primary Keys in bulk?
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Oct 12, 2015
I wanted to find all occurrences of ADRSCODE in a Database where ADRSCODE is in either an Index or a Primary Key.
I know how to get all of the occurences of ADRSCODE in a database and the table associated with it, I just want to tack on the Index and/or primary key.
SELECTOBJECT_NAME(object_id)FROMsys.columns
WHEREname
='foo'
How can I get the other bit of information ?
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Oct 12, 2015
I have a table of raw data where each column can be null. The thought was to create an identity key (1,1) and set as primary for each row. (name/ address / zip/country/joindate/spending) with surrogate key: "pkid".However other queries will not use this primary key. So for instance they may count the # of folks at a zip, select all names, addresses etc. The queries may order by join date, or select all the people that joined on a specific date.No other code would logically use the primary key (surrogate primary id key), therefore would it still have any performance benefits? at this time the table would have no clustured or nonclustured indexes or keys. I'm curious if there are millions of records.
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May 25, 1999
Hi
Does anyone the syntax or command to View Stored Procedures with Transact SQL statement. I have tried using the syscomments but there is some information missing.
I would appreciate any reply !
Thanks you for your time.
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Jul 17, 2015
I have a view that takes 14 mins to return 3000 rows. At some points in the execution plan, there are over 4 million rows. The query for the View has a Distinct, a couple columns are populated by functions, there is a cross join, there is a join on a table with no keys or index, joins on non-key varchar columns and so forth. It looks a bit like this:
SELECT DISTINCT
TOP 100 PERCENT N.Id, N.CountyName, N.OperationName,
N_LO.Name, N_LO.LastName,N_LO.Address1,
N_TO.Name, N_TO.LastName,
dbo.fn_Sections(N.Shape, s.Points) AS Sections
[code]...
The DISTINCT is in there to get rid of the extra Bob rows, because Bob has many sizes. I need to keep the multiple sizes on Bob's row, but I don't want multiple rows of Bob. Is there a more efficient way to do that other than using DISTINCT?
Second, word on the street is that functions are best avoided if you are going for speed. I don't see a way to use "FOR XML PATH" outside the function, because I can't get it to work on just one column. So I am looking for a way to produce the multiple values on one row.
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Sep 17, 2015
I'm using MS SQL Server 2008R2, Is there a way to find size on disk for view(s) ?
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Jun 29, 2015
We are accessing a database through Linked Servers. That database has a bunch of views.We are able to get a list of columns for our views by querying [syscolumns]. However, how do we find out which of those columns have primary keys?
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Sep 14, 2015
I have a ms-sql 2012 for this task. I read that running totals / sum over is better supported here.
There are customers with an account where they can insert or withdraw cash. When they insert, the inserted amount will get a date where it expires. After the expiration date, the cash becomes unavailable.
I'm not sure how to design the tables to meet my needs, but this is my best guess. And below is the first problem in the view.
Table: deposit This table will hold all deposits
customerId (string)
balanceType (string)
transactionDate (date)
expiresOnDate (date)
amount (decimal)
transactionText (string)
The data set for the deposit table could be:
1 Bonus 01-05-2015 30-04-2016 500 Inserted 500
2 Bonus 01-05-2015 30-04-2016 500 Inserted 500
3 Bonus2 01-01-2015 31-12-2015 100 Inserted 100
2 Bonus2 01-01-2015 31-12-2015 100 Inserted 100
Table: withdrawal This table will hold all withdrawals
customerId (string)
balanceType (string)
transactionDate (date)
amount (decimal)
transactionText (string)
The data set for the withdrawal table could be:
2 Bonus2 01-04-2015 -100 Needed 100
2 Bonus2 02-04-2015 -100 Needed 100
2 Bonus2 03-01-2015 -100 Needed 100
3 Bonus2 10-04-2015 -50 Took out 50
3 Bonus2 11-04-2015 -100 Took out 100
[Code] .....
Now I need to combine the two tables in a view with a running total, ordered by customerId, balanceType and transactionDate
customerId
balanceType
transactionDate
amount
Total
Text
The view must show this, when selecting all records:
1 Bonus 01-05-2015 500 500 Inserted 500
1 Bonus 01-07-2015 -100 400 Yes, got 100
1 Bonus 02-07-2015 -100 300 Yes, got 100
1 Bonus 03-07-2015 -100 200 Yes, got 100
[Code] ....
And a last view that will show distinct totals for each customer and balanceType
customerId
balanceType
totalBalance
1 Bonus -200
2 Bonus -300
2 Bonus2 -200
3 Bonus2 -550
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Oct 27, 2015
How to encrypt the procedure in the view itself using RSA?
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Jun 25, 2015
Log-in access web-page.When page is accessed a stored procedure is executed that will provide a list of all the RA(Problem -- when a new building is added, this stored procedure must be opened and syntax added)..Results are stored in a drop down list on the page.Create a table holds list of all buildings something similar to this
Create Table [dbo].[BuildingInformation] (
ID INT IDENTITY NOT NULL,
BuildingName varchar(50),
RAName varchar(50)
[code]....
Alter the stored procedure so that when it is run it will iterate the BuildingInformation table and compare the value in BuildingInformation to the values in the field BuildingName of the view [RA]. If all buildings contained in the table [BuildingInformation] exist in the view [RA] nothing will change. If their are values in the [BuildingInformation] table that do not exist in the view [RA], the view [RA] will be dropped and recreate with a 'Union ALL' for each building in the table
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Oct 15, 2015
I'd like to get results from ZTest_Contract being my result set, and would like to combine the subquery (which gets the Max) into the primary view ZTest_Contract.
CREATE VIEW [dbo].[ZTest_Contract] AS
Select
M.CUSTNMBR,
M.ADRSCode,
M.Contract_number,
M.MaxWSCONTSQ,
M.Equipment_id,
[Code] ......
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May 13, 2015
table1
id Rate start end
A01 2 01/04/2015 31/03/2016
A02 2 01/04/2015 31/03/2016
A03 2 01/04/2015 31/03/2016
A01 2.5 01/04/2016 31/03/2017
A02 2.5 01/04/2016 31/03/2017
A03 2.5 01/04/2016 31/03/2017
table2
id Received
A02 13/05/2015
A02 23/07/2016
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Aug 27, 2015
I am looking for script that can get details about CPU, Memory and I/O for view i.e how much memory, cpu and I/O have been used by particular view.
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Jul 31, 2015
I want to view all data that have a date of today, but my query is not returning them? Is it due to the actual data being a datetime and I am not accounting for time? How should I set this query up so that the data returns?
Create Table DateTest(ID int,Date1 datetime)
Insert Into DateTest Values(1, GetDate()), (2, GetDate()), (3, GetDate()), (4, GetDate())
Select * from DateTest
ORDER BY Date1 DESC
Select * from DateTest
where Date1 = convert(varchar(10), GetDate(), 126)
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Apr 30, 2015
I have a subset of data whose source of truth resides in an Oracle Database. Can I define a SQL Server View to retrieve this subset of data and make it available on the SQL Server side for say Reporting and SSRS? I think I also saw where they tend to prefer User-Defined functions as opposed to a view.
If I define the view using an OPENQUERY, I have noticed that it seems to run FOREVER on the SQL Server side and returns pretty timely if I run in Oracle SQL Developer. Is there anything I can tweak to improve this timeliness or lack there of? And the whole reason I'd like to create a view of this Oracle data is so that I can take advantage of all the views and functions that we have created on the SQL Server side.
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Sep 21, 2015
I am building a view to be used to drill down into a Lightswitch app I'm building and to drive this I want to use a view based off the selection of that value several other values will be given to the user to choose from related to the first selection. I've created a view using the following statement:
SELECT DISTINCT TOP (100) PERCENT ARSFamily, ARS_Index
FROM dbo.csr_standards_cmsars
ORDER BY ARSFamily
but the results come back with ALL the records of the source table (509 rows) when there should have only been 29 rows returned (the appropriate number of families or unique groups). The index is necessary to have Lightswitch use the view as a data source.what I'm doing wrong here?
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Nov 4, 2015
I created a view that joins several tables together and added an instead of insert, update trigger on it. My trigger works when I do an update/insert directly to the view, but it doesn't seem to fire when an insert/update is made to any of the tables that the view is based on. Is there a way to have the trigger fire when something happens to the tables that the view is based on? The application that the database is using is something that was purchased so I don't have access to the code to change any SQL statements that it's using.
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Jun 8, 2015
I am using SQL 2014 RTM (may be it's time to upgrade).
I have the following view:
create view [dbo].[SiriusV_Max4SaleList]
as
select m.id as Max4SaleId,
mt.[Description] as [TypeDescription],
CAST(m.[type] as tinyint) as [Type],
m.start_time as [StartTime],
m.end_time as [EndTime],
[Code] ....
I am thinking I may want to remove CAST for department, category, item later on as I don't really care if these columns would be defined as key for my EF model, but I do want to search by these columns. Anyway, this is my current view.
I executed the following select statement once
select * FROM dbo.siriusv_max4saleList where department like 's%' or category like 's%' or item like 's%'
And I believe I got 29 rows initially. However, when I execute this statement now I'm getting just 13 rows. If I execute just the department like 's%' I am getting 0 rows although I can see in the first result a row where department has s in in.
I guess I keep it here since I've created the message already but now I figured out why I am not getting the expected result. I used the condition like 's%' and not like '%s%' which application is doing.
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Sep 29, 2015
I have two databases DB1 and DB2 DB1 has a source table named 'Source' I have created a login 'Test_user' in DB2 with Public access. I have also created a view named 'Test_view' in DB2 which references data from DB1.dbo.Source
How can I do the following: AS A Test_user
SELECT * FROM DB2.dbo.Test_view --Should work
SELECT * FROM DB1.dbo.Source --Should Not work
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