Updating Tables Using Views
May 18, 2007Is there any gud topic on "updating tables using Views".Plz let me know
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Help With Partitioned Views Or Updating Data From Multiple Tables
Mar 16, 2008Hi All,
My database's design is set out here. In summary, I'm trying to model a Stock Exchange for a Technical Analysis application written using Visual C++. In order to create the hierachy I'm using a Nested Set Model. I'm now trying to write code to add and delete equities (or, more generically, nodes) to the database using a form presented to the user in my application. I have example SQL code to create the necessary add and delete procedures that calculate the changes to the values in the lft and rgt columns, but these examples focus around a single table, where as my design aggregates rows from multiple tables using UNION ALL:
Code Snippet
CREATE VIEW vw_NSM_DBHierarchy -- Nested Set Model Database Hierarchy
AS
SELECT clmStockExchange, clmLeft, clmRight FROM tblStockExchange_
UNION ALL
SELECT clmMarkets, clmLeft, clmRight FROM tblMarkets_
UNION ALL
SELECT clmSectors, clmLeft, clmRight FROM tblSectors_
UNION ALL
SELECT clmEPIC, clmLeft, clmRight FROM tblEquities_
Essentially, I'm trying to create an updateable view but I receive the error "UNION ALL View is not updatable because a partitioning column was not found". I suspect that my design in wrong or lacks and this problem is highlighting the design flaws so any suggestions would be greatly appreciated.
Updating Views
Oct 3, 2001When I change a table through the Enterprise Manager, I then have to go and manually refresh all views dependant on that table, even though they don't reference the new column explicitly (they use .*) - just opening the view, typing a space and resaving it works. Obviously this is the dumb way to do it - is there a way to automatically refresh the views?
View 1 Replies View RelatedUpdating Views
Dec 15, 2006hi,is it possible to update views?
if means please tell how?
this is my view:
create view upd_view as
select a.name,a.id,a.salary,b.designation from emp0 a,updview b where a.id=b.id;
select * from upd_view;
NAME ID SALARY DESIGNATION
-------------------- --------- --------- --------------------
Amama 2 3 manager
papa 23 10000 engineer
ammu 24 12345 father
i want to update name where id=2 in the view so please can any one help me to update.
Updating Indexed Views - Who Pays?
Jul 23, 2005This from a SQL Server manual:"Complex queries, however, such as those in decision support systems,can reference large numbers of rows in base tables and aggregate largeamounts of information into relatively concise aggregates (such as sumsor averages). SQL Server 2000 supports creating a clustered index on aview that implements such a complexquery. When the CREATE INDEX statement is executed, the result set ofthe view SELECT is stored permanently in the database. Future SQLstatements that reference the view will have substantially betterresponse times. Modifications to the base data are automaticallyreflected in the view."My question arises from the last sentence. At what point are the viewsupdated with the new data? If I am running a transaction that updatessome dependent tables, is there a performance impact while the indexedviews are updated?Jess Askin.
View 3 Replies View RelatedViews / Stored Procedures / Updating Records
Jul 23, 2005This 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.
View 3 Replies View RelatedViews Vs Tables
Oct 16, 2007I am an SQL beginner / intermediate.
My question is assuming everything is equal is a view of a 4 table join slower than the SQL query of the 4 table join when running reports?
Views Vs Tables
Jun 29, 2001My client has a three tier system.
and they are using only views to assess the database and doing about 5 joints what are the advantages and disavantages of using only view vs hiting the table dirrectly
Views Vs. Tables
Aug 24, 2000Are views used for securiry reasons, such as restricting access to certain columns/rows or is there performance advantages to using views. There is disagreement in my dept.
I created the following view PAYACTIVE:
Select * FROM PAYMENTS WHERE STATUS = 'ACTIVE'
The PAYACTIVE view contains 260 rows. The PAYMENTS table contains over 2 million rows. I executed the following commands:
Select * FROM PAYACTIVE
Select * FROM PAYMENTS WHERE STATUS = 'ACTIVE'
They seem to take the exact same amount of time. In other words, selecting from the view seemed to not help performance. Am I conducting a valid test?
Views Vs Tables
Jun 29, 2001My client has a three tier system.
and they are using only views to assess the database and doing about 5 joints what are the advantages and disavantages of using only view vs hiting the table dirrectly>
Emily
256 Tables In Views
Aug 30, 2005I have a SQL script that I attempted to write into a view. If I run the script in SQL Query Analyzer it works perfectly. When I attempt to run execute as a view I receive the following error message: "[MS][ODBC SQL Server Driver][SQL Server] The query and the views or function in it exceeded the limit of 256 tables."
My objective is to use the recordset from the view to create a crystal report but have been unable to replicate the "query" effect directly in crystal. (unfortunately I am also a new crystal user)
All my searches have been fruitless. I remember seeing something about SQL Server 2000 supporting 1000 tables and older versions supporting 256 in an Access forum but have not been able to find that thread a second time.
Any provided solution would be greatly appreciated. (I am getting tired of hearing the "gears" in my head grinding. Is smoke from the ears normal?)
SELECT SubID, SubMenuDesc, ItemID, ItemDesc, 0 AS ModID, 'n/a' AS ModDesc, round(ItemPrice/100,2) as ItemPrice
FROM vwSubMenuNorm
WHERE (ItemPrice <> 0)
UNION
SELECT vwSubMenuNorm.SubID, vwSubMenuNorm.SubMenuDesc, vwSubMenuNorm.ItemID, vwSubMenuNorm.ItemDesc, vwModifiersNorm.ItemID AS ModID,
vwModifiersNorm.ItemDesc AS ModDesc, round(vwModifiersNorm.ItemPrice/100,2) as ItemPrice
FROM vwSubMenuNorm INNER JOIN
vwItemNorm ON vwSubMenuNorm.ItemID = vwItemNorm.ID INNER JOIN
vwModifiersNorm ON vwItemNorm.MOD1 = vwModifiersNorm.ModID
WHERE (vwSubMenuNorm.ItemPrice = 0) AND (vwModifiersNorm.ItemPrice <> 0)
UNION
SELECT vwSubMenuNorm.SubID, vwSubMenuNorm.SubMenuDesc, vwSubMenuNorm.ItemID, vwSubMenuNorm.ItemDesc, vwModifiersNorm.ItemID AS ModID,
vwModifiersNorm.ItemDesc AS ModDesc, ROUND((vwSubMenuNorm.ItemPrice + vwModifiersNorm.ItemPrice)/100, 2) AS ItemPrice
FROM vwSubMenuNorm INNER JOIN
vwItemNorm ON vwSubMenuNorm.ItemID = vwItemNorm.ID INNER JOIN
vwModifiersNorm ON vwItemNorm.MOD1 = vwModifiersNorm.ModID
WHERE (vwSubMenuNorm.ItemPrice <> 0) AND (vwModifiersNorm.ItemPrice <> 0)
Permissions On Views And Tables
Aug 12, 2005I am using a Microsoft Access ADP to get to data on SQL Server 2000. I would like to protect the base tables from being edited directly, but allow the views and SPs to handle all the work of getting data in and out. From what I have read in numerous articles and boods, I should be able to grant permissions just on the Views and NOT on the tables. However, the ONLY way I can make my views 'updatable' is by graniting UPDATE permissions on the TABLE! Worse yet, if I DENY permissions to UPDATE, INSERT, and DELETE in the view, but allow them in the table, the view allows the updates anyway, apparently not looking at the fact that it should be DENIED.
:confused:
Create Views Not Tables
Jun 9, 2004I want to allow a group of users to create views but not be able to create new tables or stored procedures... how can I do this ??
Thanks, John :eek:
Tables/Views In DTS Package
Jan 5, 2005Is there an easy way to find all instances of a table/view name in packages?
View 1 Replies View RelatedLinking Tables With Views
May 12, 2008I want to link in a table from another sql server in a view, how is this done?
View 1 Replies View RelatedPermissions With Views And Tables
Jul 23, 2005We are attempting to implement security on top of a shrink-wrapped softwarepackage and are trying to get row-level security. Here's the scenario:1. Table dbo.BOOK contains all the information about books in everydepartment.2. There are a large number of developed reports that run queries like"select * from BOOK..."3. We wish to have each Department only be able to see their books - withoutchanging the existing reports.Our thought was to create a series of views:create view Dept1.BOOK asselect * from BOOK where Dept=1....and then create Roles for each Dept. We'd then remove rights to dbo.BOOKand grant rights to DeptN.BOOK as appropriate for each role. We startedtesting this and seemed to get it working, but are now having problems. Isthis possible? Is there another, better solution?Thanks!
View 5 Replies View RelatedNeed Some Help With Design Of Tables/views
Jul 23, 2005I have an applicaton in which I collect data for different parametersfor a set of devices. The data are entered into a single table, eachset of name, value pairs time-stamped and associated with a device.The definition of the table is as follows:CREATE TABLE devicedata(device_idintNOT NULL REFERENCES devices(id),-- id in the devicetabledatetimedatetimePRIMARY KEY CLUSTERED,-- date creatednamenvarchar(256)NOT NULL,-- name of the attributevaluesql_variantNOT NULL-- value)For example, I have 3 devices, and each is monitored for two attributes-- temperature and pressure. Data for these are gathered at say every20 minute and every 15 minute intervals.The table is filled with records over a period of time, and I canperform a variety of SQL queries.I have another requirement which requires me to retrieve the *latest*values of temperature and pressure for each device.Ideally, I'd like to use the data I have collected to get thisinformation, and I suppose I can.What I need is the SELECT statement to do this.I'd appreciate it very much, if someone can help provide that.Conceivably, I could use a SQL server View for making this easier forsome of my users.One alternate technique I thought was to create another table which I*update* with the latest value, each time I *insert* into the abovetable. But it seems like a waste to do so, and introduces needlessreferential integrity issues (minor). Maybe for fast access, that isthe best thing to do.I have requirements to maintain this data for several months/year ortwo, so I am dealing with a large number of samples.Any help would be appreciated.(I apologize if this post appears twice)
View 9 Replies View RelatedAbout Security Between Views And Tables
Nov 13, 2006Hi,
I've got a table T1 and a view V1 based on T1's rows (but not all rows).
I've granted users to do update and select on my View V1.
But i don't want users directly update my table T1.
then, i log as a standard user in Enterprise mgr, and open my view V1. I modify a value in a field, and when i validate, an error occurs saying i'm not allowed to make Select neither Update on table T1.
Is there a way of doing this ? (sql 2000).
How To List Tables,indexes,views Etc...
Jun 16, 2003Hi,
I want to list the table names in a database "mydev_db".What would be the query ?.
I want to run a similar query to find out the indexes,views,stored_procs etc.
Regards,
Copernicus
How To Load Some Tables/views To Memory?
Feb 12, 2008This is a SQL2000 sp4 Ent. machine.
I was heard that loading certain tables/views (the most frequently used ones) could help in performance.
How could i do that?
thanks
david
Comparing Data In Tables/views.
May 13, 2008I am looking for an efficient mechanism to compare data between 2 tables/views.
Rationale:
I use a proprietary tool to data transfer between 2 databases. The tool itself uses Microsoft SSIS (integration service) to transfer data. I want to make sure that the data is transfered properly. Both the source and target database are not live database. The source and target database are in seperate servers.
Comparing Two Tables Or Views Easily
Jan 15, 2003Based on the discussion at:
http://www.sqlteam.com/forums/topic.asp?TOPIC_ID=23038
and BSmith's idea (no relation), I came up with this silly stored proc to compare any two tables or views. Supply the table names and the columns you wish to compare and have fun!
The key to the GROUP BY approach is that it handles NULLS quite well which JOINS have trouble with.
CREATE PROCEDURE CompareTables(@table1 varchar(100),
@table2 Varchar(100), @T1ColumnList varchar(1000),
@T2ColumnList varchar(1000) = '')
AS
-- Table1, Table2 are the tables or views to compare.
-- T1ColumnList is the list of columns to compare, from table1.
-- Just list them comma-separated, like in a GROUP BY clause.
-- If T2ColumnList is not specified, it is assumed to be the same
-- as T1ColumnList. Otherwise, list the columns of Table2 in
-- the same order as the columns in table1 that you wish to compare.
--
-- The result is all records from either table that do NOT match
-- the other table, along with which table the record is from.
declare @SQL varchar(8000);
IF @t2ColumnList = '' SET @T2ColumnList = @T1ColumnList
set @SQL = 'SELECT ''' + @table1 + ''' AS TableName, ' + @t1ColumnList +
' FROM ' + @Table1 + ' UNION ALL SELECT ''' + @table2 + ''' As TableName, ' +
@t2ColumnList + ' FROM ' + @Table2
set @SQL = 'SELECT Max(TableName) as TableName, ' + @t1ColumnList +
' FROM (' + @SQL + ') A GROUP BY ' + @t1ColumnList +
' HAVING COUNT(*) = 1'
exec ( @SQL)
- Jeff
Using Updatable Views When Moving Tables From One DB To Another?
Dec 3, 2007Hello,We are researching whether the following scenario would be possible:In an upcoming application release, we have to move some tables (Logtables, look up tables, and a couple of secure tables) from database Ato database B.Rather than wait and do everything all at once, and have no roll-backplan should it fail, we'd like to create database B now, and startmoving those tables one by one over to it.To ensure compatibility with the existing code-base, we'd like todetermine whether we can use updatable views to allow the current codeto continue to run against the existing DB.Essentially, we would do this:Given a table named LogTable In database A, we'd copy all ofLogTable's data to database B. (We'd look at the transaction log tocopy any changes made on rows modified after copying started.)Then, we'd turn off the site for a few moments, and:In database A, we'd rename LogTable to LogTable-Old, and create a viewcalled LogTable which points to DatabaseB.dbo.LogTable.When we turn the site back on, updates and selects to LogTable wouldphysically pull from database B from now on.I have already verified that performing selects and updates against aview that refers to another physical database actually does work inSQL 2K5.My question is are there any pitfalls or things we should be aware ofthat anyone else has experienced trying to do something like this?Does it sound feasible?Thank you,Josh
View 3 Replies View RelatedCan Not Create Views, Tables Etc * URGENT*
Jul 20, 2005Hi,I am not getting option as 'new view' and 'new table' when I rightclick onviews and tables option in VisualStudio.net IDE server explorersqlservers database to create new objects.Looks like some setup issue in my database.Thanks for your help in advance.RgdsCV
View 1 Replies View RelatedIndexed Views Vs Temp Tables
Jul 20, 2005With my understanding of indexed views and according to books I read"indexed views" are supposed to perform much better than "temp tables"(temp table having primary key and indexed view with clustered indexon the same keys).But when I tried in my system I am getting opposite results. WithIndexed Views it takes 3 times more time.Any body has any reasons for that? Or my understanding was wrong?thanksRaghu Avirneni
View 2 Replies View RelatedShould I Create Indexes On Views Or Tables
May 22, 2007I have a pretty large database that has tables that will contain millions of rows of records. I will predominantly be using Views just to select the data. (I will not be performing any updates or inserts). I propose creating indexes on the views. My question is - if I create indexes on my views, do I have to create them on the tables as well? Is it good practice to create indexes on tables by default even if I am not going to be performing select statements directly on my tables but via my indexed views? Any advice is appreciated.
Thanks
Ran
Updating Tables
Jan 19, 2008Consider i have 2 database namely database1 and database2 . both the databases are in the same server
database1 has a following tables
1.the table "class" has following fields and many more fields. consider 50 fields but for the use of example i have given only three fields name and sample values. class studentname rollno (table name - class) 8th std aaaaa 100
2. the table "Fees" has the following fields and many more fields. consider 25 field but for the use of example i have gievn only 2 fields name and sample values rollno fees (table name - fees) 100 50000 101 25000
Now i have created the following tables in database2 the table "class" has the following fields only, class studentname rollnothe table "fees" has the following fields only. rollno fess
Question ?please let me know if there is any tool or method . to transfer values from database1 to databse2
Updating The Tables
Nov 26, 2005now i want to update all the three tables with the help of asp.net in the table PhoneExtraFieldAliasalias should be replased by the inputed values say in filed1 = 'date' so now filed1 should behave like as date column and if no data is inputed then field should be 'null' and it picks up its value from phoneextra and phonemst and all the task are performed in one form of asp.net in phoneextra nad phoneextrafieldalias tables has phoneid is comman.first it takes data from phoneextrafiledalias then its value from phoneextra CREATE TABLE [dbo].[PhoneExtra] ([PhoneID] [varchar] (12) NOT NULL ,
[Field1] [varchar] (50) NULL ,[Field2] [varchar] (50) NULL ,[Field3] [varchar] (50) NULL ,[Field4] [varchar] (50) NULL ,[Field5] [varchar] (50) NULL ,[Field6] [varchar] (50) NULL ,[Field7] [varchar] (50) NULL ,[Field8] [varchar] (50) NULL ,[Field9] [varchar] (50) NULL ,[Field10] [varchar] (50) NULL ,[Field11] [varchar] (50) NULL ,[Field12] [varchar] (50) NULL ,[Field13] [varchar] (50) NULL ,[Field14] [varchar] (50) NULL ,[Field15] [varchar] (50) NULL ,[Field16] [varchar] (50) NULL ,[Field17] [varchar] (50) NULL ,[Field18] [varchar] (50) NULL ,[Field19] [varchar] (50) NULL ,[Field20] [varchar] (50) NULL ) ON [PRIMARY]
GO
CREATE TABLE [dbo].[PhoneExtraFieldAlias] ([CampaignID] [varchar] (20) NOT NULL ,[Field1] [varchar] (50) NULL ,[Field2] [varchar] (50) NULL ,[Field3] [varchar] (50) NULL ,[Field4] [varchar] (50) NULL ,[Field5] [varchar] (50) NULL ,[Field6] [varchar] (50) NULL ,[Field7] [varchar] (50) NULL ,[Field8] [varchar] (50) NULL ,[Field9] [varchar] (50) NULL ,[Field10] [varchar] (50) NULL ,[Field11] [varchar] (50) NULL ,[Field12] [varchar] (50) NULL ,[Field13] [varchar] (50) NULL ,[Field14] [varchar] (50) NULL ,[Field15] [varchar] (50) NULL ,[Field16] [varchar] (50) NULL ,[Field17] [varchar] (50) NULL ,[Field18] [varchar] (50) NULL ,[Field19] [varchar] (50) NULL ,[Field20] [varchar] (50) NULL
) ON [PRIMARY]
GO
CREATE TABLE [dbo].[PhoneMst] ([PhoneId] [varchar] (12) NOT NULL ,[PhoneNo] [varchar] (50) NOT NULL ,[Name] [varchar] (50) NULL ,[Sex] [char] (1) NULL ,[Company] [varchar] (100) NULL ,[Address] [varchar] (150) NULL ,[City] [varchar] (50) NULL ,[State] [varchar] (50) NULL ,[Zip] [varchar] (50) NULL ,[Country] [varchar] (50) NULL ,[Email] [varchar] (60) NULL ,[Website] [varchar] (50) NULL ,[Fax] [varchar] (50) NULL ,[EntryOn] [datetime] NULL ,[Remarks] [varchar] (10) NULL ) ON [PRIMARY]GO
Updating Changes To Two Tables Using T-SQL
Jan 24, 2006I have a webform contains a list of documents and information about them. What would be the best way to update any changes back to the database where I would need to log each change into an audit table as well.
For example:document changedA YesB NoC Yes
I would need to take this information and update the documents table with the changes from A and C, but ALSO would need TWO entries in my audit log table. One for A and one for C. Is there a quick way to do this or will I need to use loops and/or cursors? I'm trying to find a way that won't kill my performance. Thank you.
Updating Very Fat Tables
Aug 19, 2005Even if indexes are good, isn't there still a performance issue with updates to a very fat table (333 columns and almost 8030 bytes, with over 100,000 rows). We are looking at 300 users updating this table 400-500 times an hour. I had no input on the table design, but I can complain. All the updates are sql, not sp's
View 2 Replies View RelatedUpdating Two Tables
Feb 15, 2008Hello I have two tables users and Private I want to be able to view, update, delete info from the two tables from one screen
scenario user logs in to system system stores userID and transfers userID to new table this user id will be used by sql to load only that users details (UserID is PK for users and FK for private) the user will be able to update some of their info. as an admin they will use the same procedure except they will be able to see all members details and add new members using update or delete. I have tried to use a data Sqladaptor to do this but the info will display it will not allow delete update. If I load both tables into separate Sqladaptors they are not in sync anyone have any suggestions
thanks
M
Updating Two Tables
Dec 21, 2007I have two tables:
table 1
-------
code
description
colour
size
active
table 2
-------
code
location
sales_region
active
How can I, using SQL Server 2005, update both tables so that
colour = red
location = Wisconsin
size = medium
active = yes
where code = AL1
please?
table 1 has code as the primary key. table 2 has no index.
Updating Two Tables
Jan 23, 2007Okay, here is my issue:I have an access program that tracks the location of certain items.When the items are moved their record will be added with transferinformation.So, there are two tables: tblContents and tblTransfertblContents holds all the relevant information about each item as wellas a flag for transferred items and tblTransfer holds all thetransferred item information.My problem is: How do I update tblTransfer when an item in tblContentsgets flagged true?btw, this is using a .asp front end to interact with the database.
View 1 Replies View Related