Advice On Table Design Which Will Allow Me To Enforce Integrity
Jul 23, 2005
Hi,
I have two tables Table A and B, below with some dummy data...
Table A (contains specific unique settings that can be requested)
Id, SettingName
1, weight
2, length
Table B (contains the setting values, here 3 values relate to weight
and 1 to length)
Id, Brand, SettingValue
1, A, 100
1, B, 200
1, null, 300
2, null, 5.3
(There is also a list of Brands available in another table). No primary
keys / referential integrity has been setup yet.
Basically depending upon the Brand requested a different setting value
will be present. If a particular brand is not present (signified by a
null in the Brand column in table B), then a default value will be
used.
Therefore if I request the weight and pass through a Brand of A, I will
get 100
If I request the weight but do not pass through a brand (i.e. null) I
will get 300.
My question is, what kind of integrity can I apply to avoid the user
specifying duplicate Ids and Brands in table B. I cannot apply a
composite key on these two fields as a null is present. Table B will
probably contain about 50 rows and probably 10 of them will be brand
specific. The reason its done like this is in the calling client code I
want to call some function e.g.
getsetting(weight) .... result = 300
Or if it is brand specific
getsetting(weight,A) ..... result = 100
Any advice on integrity or table restructuring would be greatly
appreciated. Its sql 2000 sp3.
Thanks
brad
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Dec 28, 2007
I've got a table that includes:CREATE TABLE [dbo].[Content] ( [Id] int IDENTITY(1, 1) NOT NULL, [ParentId] int NULL,
I'm wanting to make sure that a ParentId must be in the table as Id someplace else. When I try to do it by making it a foreign key get the error:
--------------- SQL ---------------
ALTER TABLE [dbo].[Content]ADD CONSTRAINT [Content_fk3] FOREIGN KEY ([Id]) REFERENCES [dbo].[Content] ([ParentId]) ON UPDATE NO ACTION ON DELETE NO ACTIONGO
---------- ERROR MESSAGE ----------
There are no primary or candidate keys in the referenced table 'dbo.Content' that match the referencing column list in the foreign key 'Content_fk3'.Could not create constraint. See previous errors.
Any ideas?
ALTER TABLE [dbo].[Content]ADD CONSTRAINT [Content_fk3] FOREIGN KEY ([Id]) REFERENCES [Content].[dbo] ([ParentId]) ON UPDATE NO ACTION ON DELETE NO ACTIONGO
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Aug 1, 2001
Can someone give me an example on how to enforce cross-database referential integrity with triggers in SQL Server 2000?
Thanks,
Joel
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Jan 12, 2007
I'm creating a DB to track clients, programs, and client participation in the programs. They are service programs. A client can be in more than one program and a program can have more than one client.
Can someone give me an example of how they would layout the tables?
My guess is:
tblClient, ClientID
tblClientProgramLog, ProLogID, ClientID
tblProgramDetails, ProDetailID, ProLogID
tblPrograms, ProgramID, ProDetailID
I appreciate any suggestions,
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Jul 9, 2004
I'm trying to design a database that handles Clients, Cases, Individual and Group Sessions. My problem is that a client can have individual sessions and belong to more than one group at the same time, so I have a many-to-many relationship to deal with. Also I'm trying to design it so that I can have a form that when a group is selected from a drop down it shows all clients assigned to that group and will let me enter new session data for them.
Just looking for some advice on how to handle the relationships.
Maybe someone could show me how they see the relationships working.
My take is that the session is linked to the case not the client, I could be thinking incorrectly?
Thank you,
tblClient
tblClientCase
tblCaseSessionLog
tblClientCaseGroupLink
tblGroups
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Jun 3, 2004
I have an construction estimation system, and I want to develop a project management system. I will be using the same database because there are shared tables. My question is this, critical data tables are considered tables with dollar values and these tables should not be shared across the whole company. I do however need information from these tables, such as product and quantity of the product for a given project. When an estimate becomes a project it is assigned a project number. At this point I thought of Copying the required data from the estimate side to the project side. This would result in duplicate data in a sence but the tables will be referenced from two standalone front end applications. Should I copy the data from one table to another, or create new "views" to the estimate tables for the project management portion.
What would be the best solution to this problem? I find in some circumstances, a new table is required because additional data will be saved on the "Project Management" side, but not in all cases.
Mike B
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Oct 19, 2007
Hello,
I am creating a database where:
- I have a Blogs and Folders system.
- Use a common design so I can implement new systems in the future.
Users, Comments, Ratings, View, Tags and Categories are tables common to all systems, i.e., used by Posts and Files in Blogs and Folders.
- One Tag or Category can be associated to many Posts or Files.
- One Comment, View or Rating should be only associated to one Post or one File. I am missing this ... (1)
Relations between a File / Folder and Comments / Ratings / View / Tags / Categories are done using FilesRatings, FoldersViews, etc.
I am using UniqueIdentifier as Primary Keys.
I checked ASP.NET Membership tables, a few articles and few features in my project, such as renaming files with the GUID of their records.
I didn't decided yet for INT or UNIQUEIDENTIFIER.
I am looking for some feedback on the design of my database.
One thing I need to improve is mentioned in (1)
Thank You,
Miguel
My Database Script:
-- Users ...
create table dbo.Users
(
UserID uniqueidentifier not null
constraint PK_User primary key clustered,
[Name] nvarchar(200) not null,
Email nvarchar(200) null,
UpdatedDate datetime not null
)
-- Categories ...
create table dbo.Categories
(
CategoryID uniqueidentifier not null
constraint PK_Category primary key clustered,
[Name] nvarchar(100) not null
)
-- Comments ...
create table dbo.Comments
(
CommentID uniqueidentifier not null
constraint PK_Comment primary key clustered,
AuthorID uniqueidentifier not null,
Title nvarchar(400) null,
Body nvarchar(max) null,
UpdatedDate datetime not null,
constraint FK_Comments_Users
foreign key(AuthorID)
references dbo.Users(UserID)
)
-- Ratings ...
create table dbo.Ratings
(
RatingID uniqueidentifier not null
constraint PK_Rating primary key clustered,
AuthorID uniqueidentifier not null,
Value float not null,
constraint FK_Ratings_Users
foreign key(AuthorID)
references dbo.Users(UserID)
)
-- Tags ...
create table dbo.Tags
(
TagID uniqueidentifier not null
constraint PK_Tag primary key clustered,
[Name] nvarchar(100) not null
)
-- Views ...
create table dbo.Views
(
ViewID uniqueidentifier not null
constraint PK_View primary key clustered,
Ticket [datetime] not null
)
-- Blogs ...
create table dbo.Blogs
(
BlogID uniqueidentifier not null
constraint PK_Blog primary key clustered,
Title nvarchar(400) null,
Description nvarchar(2000) null,
CreatedDate datetime null
)
-- Posts ...
create table dbo.Posts
(
PostID uniqueidentifier not null
constraint PK_Post primary key clustered,
BlogID uniqueidentifier not null,
AuthorID uniqueidentifier not null,
Title nchar(1000) null,
Body nvarchar(max) null,
UpdatedDate datetime not null,
IsPublished bit not null,
constraint FK_Posts_Blogs
foreign key(BlogID)
references dbo.Blogs(BlogID)
on delete cascade,
constraint FK_Posts_Users
foreign key(AuthorID)
references dbo.Users(UserID)
on delete cascade
)
-- PostsCategories ...
create table dbo.PostsCategories
(
PostID uniqueidentifier not null,
CategoryID uniqueidentifier not null,
constraint PK_PostsCategories
primary key clustered (PostID, CategoryID),
constraint FK_PostsCategories_Posts
foreign key(PostID)
references dbo.Posts(PostID)
on delete cascade,
constraint FK_PostsCategories_Categories
foreign key(CategoryID)
references dbo.Categories(CategoryID)
)
-- PostsComments ...
create table dbo.PostsComments
(
PostID uniqueidentifier not null,
CommentID uniqueidentifier not null,
constraint PK_PostsComments
primary key clustered (PostID, CommentID),
constraint FK_PostsComments_Posts
foreign key(PostID)
references dbo.Posts(PostID)
on delete cascade,
constraint FK_PostsComments_Comments
foreign key(CommentID)
references dbo.Comments(CommentID)
on delete cascade
)
-- PostsRatings ...
create table dbo.PostsRatings
(
PostID uniqueidentifier not null,
RatingID uniqueidentifier not null,
constraint PK_PostsRatings
primary key clustered (PostID, RatingID),
constraint FK_PostsRatings_Posts
foreign key(PostID)
references dbo.Posts(PostID)
on delete cascade,
constraint FK_PostsRatings_Ratings
foreign key(RatingID)
references dbo.Ratings(RatingID)
on delete cascade
)
-- PostsTags ...
create table dbo.PostsTags
(
PostID uniqueidentifier not null,
TagID uniqueidentifier not null,
constraint PK_PostsTags
primary key clustered (PostID, TagID),
constraint FK_PostsTags_Posts
foreign key(PostID)
references dbo.Posts(PostID)
on delete cascade,
constraint FK_PostsTags_Tags
foreign key(TagID)
references dbo.Tags(TagID)
)
-- PostsViews ...
create table dbo.PostsViews
(
PostID uniqueidentifier not null,
ViewID uniqueidentifier not null,
constraint PK_PostsViews
primary key clustered (PostID, ViewID),
constraint FK_PostsViews_Posts
foreign key(PostID)
references dbo.Posts(PostID)
on delete cascade,
constraint FK_PostsViews_Views
foreign key(ViewID)
references dbo.Views(ViewID)
on delete cascade
)
-- Folders ...
create table dbo.Folders
(
FolderID uniqueidentifier not null
constraint PK_Folder primary key clustered,
[Name] nvarchar(100) null,
Description nvarchar(2000) null,
CreatedDate datetime not null,
URL nvarchar(400) not null
)
-- Files ...
create table dbo.Files
(
FileID uniqueidentifier not null
constraint PK_File primary key clustered,
FolderID uniqueidentifier not null,
AuthorID uniqueidentifier not null,
Title nvarchar(400) null,
Description nvarchar(2000) null,
[Name] nvarchar(100) not null,
URL nvarchar(400) not null,
UpdatedDate datetime not null,
IsPublished bit not null,
Type nvarchar(50) null,
constraint FK_Files_Folders
foreign key(FolderID)
references dbo.Folders(FolderID)
on delete cascade,
constraint FK_Files_Users
foreign key(AuthorID)
references dbo.Users(UserID)
on delete cascade
)
-- FilesCategories ...
create table dbo.FilesCategories
(
FileID uniqueidentifier not null,
CategoryID uniqueidentifier not null,
constraint PK_FilesCategories
primary key clustered (FileID, CategoryID),
constraint FK_FilesCategories_Files
foreign key(FileID)
references dbo.Files(FileID)
on delete cascade,
constraint FK_FilesCategories_Categories
foreign key(CategoryID)
references dbo.Categories(CategoryID)
)
-- FilesComments ...
create table dbo.FilesComments
(
FileID uniqueidentifier not null,
CommentID uniqueidentifier not null,
constraint PK_FilesComments
primary key clustered (FileID, CommentID),
constraint FK_FilesComments_Files
foreign key(FileID)
references dbo.Files(FileID)
on delete cascade,
constraint FK_FilesComments_Comments
foreign key(CommentID)
references dbo.Comments(CommentID)
on delete cascade
)
-- FilesRatings ...
create table dbo.FilesRatings
(
FileID uniqueidentifier not null,
RatingID uniqueidentifier not null,
constraint PK_FilesRatings
primary key clustered (FileID, RatingID),
constraint FK_FilesRatings_Files
foreign key(FileID)
references dbo.Files(FileID)
on delete cascade,
constraint FK_FilesRatings_Ratings
foreign key(RatingID)
references dbo.Ratings(RatingID)
on delete cascade
)
-- FilesTags ...
create table dbo.FilesTags
(
FileID uniqueidentifier not null,
TagID uniqueidentifier not null,
constraint PK_FilesTags
primary key clustered (FileID, TagID),
constraint FK_FilesTags_Files
foreign key(FileID)
references dbo.Files(FileID)
on delete cascade,
constraint FK_FilesTags_Tags
foreign key(TagID)
references dbo.Tags(TagID)
)
-- FilesViews ...
create table dbo.FilesViews
(
FileID uniqueidentifier not null,
ViewID uniqueidentifier not null,
constraint PK_FilesViews
primary key clustered (FileID, ViewID),
constraint FK_FilesViews_Files
foreign key(FileID)
references dbo.Files(FileID)
on delete cascade,
constraint FK_FilesViews_Views
foreign key(ViewID)
references dbo.Views(ViewID)
on delete cascade
)
-- Run script
go
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Nov 27, 2007
Hello Everyone. Im sorry for this urgent post, but have critical issue that needs a solution quick. So for my issue. I am adjusting our sales order tables to handle a couple different scenarios. Currently we have 2 tables for sales orders
SALESORDERS
------------
SORDERNBR int PK,
{ Addtl Header Columns... }
SALESORDERDETAILS
-------------------
SODETAILID int,
SORDERNBR int FK,
PN varchar,
SN varchar(25),
{ Addtl Detail Columns ... }
Currently the sales order line item is serial number specific. I need to change the tables to be able to handle different requests like :
Line Item Request ( PN, QTY )
Line Item Request ( SN )
Line Item Request ( PN, GRADE, QTY )
ETC.
I am thinking i need to create a new table to hold the specifics for a particular line item. Maybe like this :
SALESORDERSPECS
----------------
SOSPECID int,
SODETAILID int FK,
SPECTYPE varchar, IE : SN, PN, GRADE. { one value per row }
SPECVALUE varchar IE : GRADE A
Im thinking i would need to rename the SALESORDERDETAILS table to SALESORDERITEMS. SALESORDERITEMS would just contain header info like
SalePrice,
Warranty,
Etc...
Then rename SALESORDERSPECS to SALESORDERDETAILS...
Anyone understand what im trying to do? If you need more info please ask. You can also get a hold of me through IM.
Thanks!
JayDial
JP Boodhoo is my idol.
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May 18, 2006
Hi All, I have read MANY posts on how to track changes to data overtimeIt appears there are two points of view1. Each record supports a Change Indicator flag toindicate the current record(would this be EVERY table?)2. Each table is duplicated as an archive table andtriggers are used to update archiveCan someone give me some guidance based on REAL world experiencewhich works best for them?My scenario - I have insurance policies and must track history aspolicies are updated by customer service reps.Imagine many tables Policy>LifePol>LifePolRiders[color=blue]>AccidentPol >etc...>DIPol>DIPolRiders[/color]To me the archive table scenario does not seem scalable at all....someguidance on design would be aprreciated...Thanks!!!
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Oct 21, 2007
Hello,
I am creating a database where:
- I have a Blogs and Folders system.
- Use a common design so I can implement new systems in the future.
Users, Comments, Ratings, View, Tags and Categories are tables common to all systems, i.e., used by Posts and Files in Blogs and Folders.
- One Tag or Category can be associated to many Posts or Files.
- One Comment, View or Rating should be only associated to one Post or one File. I am missing this ... (1)
Relations between a File / Folder and Comments / Ratings / View / Tags / Categories are done using FilesRatings, FoldersViews, etc.
I am using UniqueIdentifier as Primary Keys.
I checked ASP.NET Membership tables, a few articles and few features in my project, such as renaming files with the GUID of their records.
I didn't decided yet for INT or UNIQUEIDENTIFIER
I am looking for some feedback on the design of my database.
One thing I think need to improve is mentioned in (1)
But any advices to improve it would be great.
Thank You,
Miguel
My Database Script:
-- Users ...
create table dbo.Users
(
UserID uniqueidentifier not null
constraint PK_User primary key clustered,
[Name] nvarchar(200) not null,
Email nvarchar(200) null,
UpdatedDate datetime not null
)
-- Categories ...
create table dbo.Categories
(
CategoryID uniqueidentifier not null
constraint PK_Category primary key clustered,
[Name] nvarchar(100) not null
)
-- Comments ...
create table dbo.Comments
(
CommentID uniqueidentifier not null
constraint PK_Comment primary key clustered,
AuthorID uniqueidentifier not null,
Title nvarchar(400) null,
Body nvarchar(max) null,
UpdatedDate datetime not null,
constraint FK_Comments_Users
foreign key(AuthorID)
references dbo.Users(UserID)
)
-- Ratings ...
create table dbo.Ratings
(
RatingID uniqueidentifier not null
constraint PK_Rating primary key clustered,
AuthorID uniqueidentifier not null,
Value float not null,
constraint FK_Ratings_Users
foreign key(AuthorID)
references dbo.Users(UserID)
)
-- Tags ...
create table dbo.Tags
(
TagID uniqueidentifier not null
constraint PK_Tag primary key clustered,
[Name] nvarchar(100) not null
)
-- Views ...
create table dbo.Views
(
ViewID uniqueidentifier not null
constraint PK_View primary key clustered,
Ticket [datetime] not null
)
-- Blogs ...
create table dbo.Blogs
(
BlogID uniqueidentifier not null
constraint PK_Blog primary key clustered,
Title nvarchar(400) null,
Description nvarchar(2000) null,
CreatedDate datetime null
)
-- Posts ...
create table dbo.Posts
(
PostID uniqueidentifier not null
constraint PK_Post primary key clustered,
BlogID uniqueidentifier not null,
AuthorID uniqueidentifier not null,
Title nchar(1000) null,
Body nvarchar(max) null,
UpdatedDate datetime not null,
IsPublished bit not null,
constraint FK_Posts_Blogs
foreign key(BlogID)
references dbo.Blogs(BlogID)
on delete cascade,
constraint FK_Posts_Users
foreign key(AuthorID)
references dbo.Users(UserID)
on delete cascade
)
-- PostsCategories ...
create table dbo.PostsCategories
(
PostID uniqueidentifier not null,
CategoryID uniqueidentifier not null,
constraint PK_PostsCategories
primary key clustered (PostID, CategoryID),
constraint FK_PostsCategories_Posts
foreign key(PostID)
references dbo.Posts(PostID)
on delete cascade,
constraint FK_PostsCategories_Categories
foreign key(CategoryID)
references dbo.Categories(CategoryID)
)
-- PostsComments ...
create table dbo.PostsComments
(
PostID uniqueidentifier not null,
CommentID uniqueidentifier not null,
constraint PK_PostsComments
primary key clustered (PostID, CommentID),
constraint FK_PostsComments_Posts
foreign key(PostID)
references dbo.Posts(PostID)
on delete cascade,
constraint FK_PostsComments_Comments
foreign key(CommentID)
references dbo.Comments(CommentID)
on delete cascade
)
-- PostsRatings ...
create table dbo.PostsRatings
(
PostID uniqueidentifier not null,
RatingID uniqueidentifier not null,
constraint PK_PostsRatings
primary key clustered (PostID, RatingID),
constraint FK_PostsRatings_Posts
foreign key(PostID)
references dbo.Posts(PostID)
on delete cascade,
constraint FK_PostsRatings_Ratings
foreign key(RatingID)
references dbo.Ratings(RatingID)
on delete cascade
)
-- PostsTags ...
create table dbo.PostsTags
(
PostID uniqueidentifier not null,
TagID uniqueidentifier not null,
constraint PK_PostsTags
primary key clustered (PostID, TagID),
constraint FK_PostsTags_Posts
foreign key(PostID)
references dbo.Posts(PostID)
on delete cascade,
constraint FK_PostsTags_Tags
foreign key(TagID)
references dbo.Tags(TagID)
)
-- PostsViews ...
create table dbo.PostsViews
(
PostID uniqueidentifier not null,
ViewID uniqueidentifier not null,
constraint PK_PostsViews
primary key clustered (PostID, ViewID),
constraint FK_PostsViews_Posts
foreign key(PostID)
references dbo.Posts(PostID)
on delete cascade,
constraint FK_PostsViews_Views
foreign key(ViewID)
references dbo.Views(ViewID)
on delete cascade
)
-- Folders ...
create table dbo.Folders
(
FolderID uniqueidentifier not null
constraint PK_Folder primary key clustered,
[Name] nvarchar(100) null,
Description nvarchar(2000) null,
CreatedDate datetime not null,
URL nvarchar(400) not null
)
-- Files ...
create table dbo.Files
(
FileID uniqueidentifier not null
constraint PK_File primary key clustered,
FolderID uniqueidentifier not null,
AuthorID uniqueidentifier not null,
Title nvarchar(400) null,
Description nvarchar(2000) null,
[Name] nvarchar(100) not null,
URL nvarchar(400) not null,
UpdatedDate datetime not null,
IsPublished bit not null,
Type nvarchar(50) null,
constraint FK_Files_Folders
foreign key(FolderID)
references dbo.Folders(FolderID)
on delete cascade,
constraint FK_Files_Users
foreign key(AuthorID)
references dbo.Users(UserID)
on delete cascade
)
-- FilesCategories ...
create table dbo.FilesCategories
(
FileID uniqueidentifier not null,
CategoryID uniqueidentifier not null,
constraint PK_FilesCategories
primary key clustered (FileID, CategoryID),
constraint FK_FilesCategories_Files
foreign key(FileID)
references dbo.Files(FileID)
on delete cascade,
constraint FK_FilesCategories_Categories
foreign key(CategoryID)
references dbo.Categories(CategoryID)
)
-- FilesComments ...
create table dbo.FilesComments
(
FileID uniqueidentifier not null,
CommentID uniqueidentifier not null,
constraint PK_FilesComments
primary key clustered (FileID, CommentID),
constraint FK_FilesComments_Files
foreign key(FileID)
references dbo.Files(FileID)
on delete cascade,
constraint FK_FilesComments_Comments
foreign key(CommentID)
references dbo.Comments(CommentID)
on delete cascade
)
-- FilesRatings ...
create table dbo.FilesRatings
(
FileID uniqueidentifier not null,
RatingID uniqueidentifier not null,
constraint PK_FilesRatings
primary key clustered (FileID, RatingID),
constraint FK_FilesRatings_Files
foreign key(FileID)
references dbo.Files(FileID)
on delete cascade,
constraint FK_FilesRatings_Ratings
foreign key(RatingID)
references dbo.Ratings(RatingID)
on delete cascade
)
-- FilesTags ...
create table dbo.FilesTags
(
FileID uniqueidentifier not null,
TagID uniqueidentifier not null,
constraint PK_FilesTags
primary key clustered (FileID, TagID),
constraint FK_FilesTags_Files
foreign key(FileID)
references dbo.Files(FileID)
on delete cascade,
constraint FK_FilesTags_Tags
foreign key(TagID)
references dbo.Tags(TagID)
)
-- FilesViews ...
create table dbo.FilesViews
(
FileID uniqueidentifier not null,
ViewID uniqueidentifier not null,
constraint PK_FilesViews
primary key clustered (FileID, ViewID),
constraint FK_FilesViews_Files
foreign key(FileID)
references dbo.Files(FileID)
on delete cascade,
constraint FK_FilesViews_Views
foreign key(ViewID)
references dbo.Views(ViewID)
on delete cascade
)
-- Run script
go
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Oct 22, 2007
Hi all-
I have a schema that is mostly working, but I was wondering if some of you with more experience than I might give me some constructive criticism on my methodology.
Basically, I have a single table that stores data for many records. Each record has a variable number of fields, each of which can be a different data type. Later, queries will pull filtered subsets of data from the table, and do calculations on specific fields. In my implementation, the fields for a record are bound together by the datagroup (uniqueidentifier) column in the LotsOData table, the field name is defined by the dataname column, and the field value is stored in the datavalue column, which is type sql_variant.
One problem I had, and I'm not able to reliably replicate, is that the more complicated queries sometimes raise casting errors on the sql_variant column, even when the data is absolutely correct. I've been able to avoid this case by pre-selecting some of the subqueries into temporary tables first, then joining on the temp tables in the main query, but that seems horribly inefficient.
I've included a sample table, data, and query to demonstrate my basic solution. I was wondering if anybody could provide some insight on a better way of designing a solution for this scenario.
Thanks!
-Eric.
PS: bonus points if you have any insight at all on the casting error I mentioned!!
-- create tablecreate table LotsOData( pk int identity, dataname nvarchar(16) not null, datagroup uniqueidentifier, datavalue sql_variant);-- lot of insertsdeclare @group_a uniqueidentifier, @group_b uniqueidentifier, @group_c uniqueidentifier;set @group_a = newid();set @group_b = newid();set @group_c = newid();insert into LotsOData (dataname, datagroup, datavalue)select 'some_int', @group_a, 1union all select 'some_int', @group_b, 2union all select 'some_int', @group_c, 3insert into LotsOData (dataname, datagroup, datavalue)select 'some_char', @group_a, 'a'union all select 'some_char', @group_b, 'b'union all select 'some_char', @group_c, 'c'insert into LotsOData (dataname, datagroup, datavalue)select 'some_string', @group_a, 'abc'union all select 'some_string', @group_b, '!@#'union all select 'some_string', @group_c, 'xyz'insert into LotsOData (dataname, datagroup, datavalue)select 'some_float', @group_a, 1.23union all select 'some_float', @group_b, 2.34union all select 'some_float', @group_c, 3.45insert into LotsOData (dataname, datagroup, datavalue)select 'some_datetime', @group_a, cast('01/01/2001 01:00:00' as datetime)union all select 'some_datetime', @group_b, getdate()union all select 'some_datetime', @group_c, cast('01/01/2009 01:00:00' as datetime)-- do some big ugly query:select cast(a.datavalue as datetime) as datatime_data, cast(b.datavalue as int) as int_data, cast(c.datavalue as char(1)) as char_data, cast(d.datavalue as nvarchar(max)) as string_data, cast(e.datavalue as float) as float_data, cast(b.datavalue as int) * cast(e.datavalue as float) as calc_datafrom ( select datavalue, datagroup from LotsOData where dataname = 'some_datetime' ) a inner join ( select datavalue, datagroup from LotsOData where dataname = 'some_int' ) b on b.datagroup = a.datagroup inner join ( select datavalue, datagroup from LotsOData where dataname = 'some_char' ) c on c.datagroup = a.datagroup inner join ( select datavalue, datagroup from LotsOData where dataname = 'some_string' ) d on d.datagroup = a.datagroup inner join ( select datavalue, datagroup from LotsOData where dataname = 'some_float' ) e on e.datagroup = a.datagroupwhere cast(a.datavalue as datetime) between '01/01/2006' and '01/01/2008';
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Jan 24, 2008
Any design suggestions for the best way to architect this report using SQL Reporting Services 2005 are appreciated!
My website features a catalog of roughly 50,000 items, each of which may be appear in a list of search results or in a detailed view. There are counters on the pages that update totals for such appearances and track other item-specific information in several tables in a SQL database. The catalog of items changes frequently, so the list of item IDs is never exactly the same from month to month.
I've been asked to produce a monthly report of this data for each of the items in the catalog, with reports for the current and previous months (for many years) accessible at all times. Some -- but not all -- items are useful for one purpose or another and so can be considered as belonging to a group of items. Although I have not yet been asked to create a report that aggregates the values for all Group members into a single report for that Group, I can clearly see it would be valuable and will be requested soon.
To ensure the report captures the data for an entire month, it must be run at the very end of each month. That means I will need to run the report using a Schedule that kicks off the process at 12:01am every 1st of the month. The report must be processed and stored for later retrieval and rendering on demand.
Considering the number of items and the indefinite length of time the report data must be retained, my question is really what's the best way to set all this up?
Should I create a report for each item separately? That would mean the scheduled task would have to somehow discover the current list of item IDs (which is available via query from the database) and create and process (but not render) a report for each (passing the item ID as a report parameter?), adding it to the report history. Although each report would be small take only a short time to run, overall that seems like it would take a long time to run and create a huge number of reports to store each month.
Or should I create a single 'master' report that contains all the data for every item for the month, and then use the item ID as a filter on the data when it is rendered? While that means only one report is created each month and added to the history, it would be a much larger report and take much longer to run (with more potential for timeouts and errors to scuttle the whole report). It also means all the data for the entire report has to be loaded every time the report is rendered, even though only 1/50,000 of the data (the data for 1 of the 50,000 items) will actually be viewed with any given rendering. But that would seem overly cumbersome, slow, and wastefully band-width intensive.
Any alternatives, suggestions, considerations, etc. -- all welcome!
Thanks
BillB
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Jul 23, 2004
I need to create a text file using information from SQL tables/views in the following format...Can anyone recommend a direction or procedure to look into, i.e, sql script, custom dts, etc. The items in parentheses identify specific portions of the text file.
(01)
101081,84423,customer ,072304,customer ,11310 Via Playa De Cortes , ,San Diego ,CA,92124,
(02) 6 ,1 , , , , ,22 ,1 ,0.00 ,160.46 ,160.46 ,0.00 , , , , , , , , ,1,1
(03)B130907540,5.41 ,1
(03)B130907550,5.41 ,1
(03)B130907560,5.41 ,1
(03)B130907570,6.04 ,1
(03)B065007550,1.72 ,2
(03)B065007560,1.72 ,6
(03)B519926530,4.66 ,13
(03)B519926550,4.66 ,12
(03)B560911200,2.14 ,1
(03)B560912500,2.14 ,1
(03)B095305750,3.65 ,1
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Jul 6, 2006
Hello all,
I have recently been task with rewriting a database that holds large volumes of data, whilst ensuring that query can be run in optimal time. Having never really delved into this sort of thing before, I hoped you guys might be able to offer some advice and guidance.
The design I have inherited is based around 2 main tables:
[captured_traps]
[id] [int] IDENTITY (1, 1) NOT NULL
[snmp_version] [int] NULL
[community_name] [varchar] (255)
[packet_type] [varchar] (50)
[oid] [varchar] (500)
[source_ip] [varchar] (15)
[generic] [int] NULL
[specific] [int] NULL
[time_stamp] [varchar] (15)
[trap_entered] [datetime] NULL
[status] [int] NULL
[captured_varbinds]
[id] [int] IDENTITY (1, 1) NOT NULL
[captured_trap_id] [int] NOT NULL
[varbind_oid] [varchar] (500)
[varbind_text] [varchar (500)
The relationship between the two tables is on the "captured_traps (id)" to "captured_varbinds (captured_trap_id)". Currently the "captured_traps" table contains around 350 million rows, the "captured_varbinds" table contains around 900 million rows.
Now as you can probably gather this model runs like a....well it sort of hobbles more than runs hence the need to redesign.
My current thoughts on this are:
- Normalising all varchars - there is alot of duplicate values in most of the varchar fields.
- Full Text Indexing
However beyond that I am not sure which route to go down. After googling for most of today I have come across a number of "solutions" however I do not want to go steaming down the track of one of these to discover that it is fatally flawed somewhere.
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Jul 23, 2005
It is possible to drop the table without dropping the view referencingit. How do I force integrity?Madhivanan
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Mar 3, 2006
I have transaction table where the rows entered into the transactioncan come a result of changes that take place if four different tables.So the situation is as follows:Transaction Table-TranId-Calc AmountTable 1 (the amount is inserted into the transaction table)- Tb1Id- Tb1AmtTable 2 (an amount is calculated based on the percentage and insertedinto the transaction table)-Tbl2Id-Tb2PercentageTable 3 (the amount is inserted into the transaction table)-Tbl3Id-Tbl3AmutTable 4 (an amount is calculated based on the percentage and insertedinto the transaction table. )-Tbl2Id-Tb2PercentageHow do I create referential integrity between the Transaction table andthe rest of the tables. When I make changes to the values in Table 1 -4, I need to be able to reflect this in the Transaction table.Thanks.
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Aug 18, 2015
I would like to create a table called product. My objective is to get list of packages available for each product in data grid view column while selecting each product. Each product may have different packages type (eg:- Nos, CTN, OTR etc). Some product may have two packages and some for 3 packages etc. Quantity in each packages also may be differ ( for eg:- for some CTN may contain 12 nos or in other case 8 nos etc). Prices for each packages also will be different that also need to show. How to design the table..
Product name :
Nestle milk |
Rainbow milk
packages :
CTN,OTR, NOs |
CTN, NOs
Price:
50,20,5 |
40,6
(Remarks for your reference):CTN=10nos, OTR=4 nos
| CTN=8 Nos
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Mar 17, 2008
ok - I have to allow my user to enter in from date - to date (multiple date selections) and these dates will be marked as holiday..
user will also be able to choose a date selection (like march 2-march 5)that was added and remove it from being marked as holiday or add new date selections.
now I need to be able to based on a date lookup whether it is a holiday or not.
what's the best way to set up the table?
should I set it up with fromdates = todates or a table with each individual date and then mark it.
what do you suggest as far as the table set up?
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Apr 13, 2004
Hi,
We testing our security.
For NT logins user password complexity and expiration enforced by NT
1.Any way to enforce password complexity and expiration for standard sql login ?
2.any way to check if existing sql login passwords less then N number of characters?
Thank you
Alex
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Oct 22, 2007
I have recently restored an SQL Server 2000 database on SQL Server 2005
A number of constraints on the database had previously been disabled
A monthly process that is carried out, imports data into 'Table A'.
This process now crashed, being unable to truncate table as it referenced by 'Table B'
Although when i check the properties of the constraint the 'enforce foreign key constraints' is set to no.
Is there a known issue with restoring databases on 2005,
Any help greatly appreciated.
Micheal
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Jan 9, 2008
hello,
i started making my database some time ago, and therewith i maked some relations between my tables
at the beginning, at Tables, at the UserId row, i had uniqueidentifier. and because i had some difficulties when trying to get the username who corresponds with that uniqueidentifiers i've discarded that and replacing the uniqueidentifier with varchar(255) where i am writing dirrectcly User.Identity.Name.
Because of that, i had to delete some of the tables relations, because i can make relations only by unique variables (witch in fact are unique but database can't know that)
What i should do now? remake the tables with UserId as uniqueidentifer or i should let it so without no relations between them? (witch i don't think is good)
thanks
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Mar 1, 2006
I am creating a table that will store my companys annual punctualityscale. What is the best way to name the columns? Here is some samplerows with data.--------------------------------------DPT_CODE_1 | 300 | 121 | 120 | 61 | 60DPT_CODE_2 | 360 | 241 | 240 | 121 | 120Thanks for any advice.Aplatfl
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Oct 12, 2014
how to i write a trigger to enforce this constraint..A rental can be made only if the customer is registered with the company and the car is not currently rented out. If not, the rental will not be successful.
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Mar 20, 2007
I have a 3 node cluster running windows 2003 x64 sp1 and SQL Server 2005 version 9.00.2153. My problem is the following...
This Saturday I migrated a web application's database to this server. After restoring the database I created the sql login for the service account, set the password and disabled the password policy for this login. I then ran sp_change_users_login to attach the already existing db user with the same name to the login. I changed the connection string for the application, tested the application connectivity and functionality then detatched the old database on the old server. Everything went like clockwork, no problems at all.
Come Monday morning at 8:35 I started getting alerts that the web site was down. I tested the site and sure enough it was down. I then attempted to connect to the database server using the login that was created for the app and the connection failed. I logged in with my ID and got in fine. Nothing showing to be wrong with the DB, I checked the new login and somehow the "Enable Password Policy" had been set for the new login. I disabled it and still no connection. I went to the database and checked the DB user and somehow the link between it and the login no longer existed. I reran the sp_change_users_login and restested the web site and verified that that web site was back online.
My question is this, is there any stored proc that resets these values back to default for some reason, a series of events that might revert the "Enable Password Policiy" to the default for a login, or is there a particular domain level operation that might occur such as Security Polcies that would affect these settings in SQL?
No one else was on the machine when I went to check it out at 8:40 so it has left me puzzled.
Any help would be appreciated.
Thanks.
Zach
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Jan 27, 2007
Hi,
I have the following two tables in MS SQL 2000
1.Products:
ProdID intProName char(10)
2.Orders:
OrderID intProdID intOrderDate DateTimeQuantity int
I want to join these two tables to form the following result format:
_________Prod1__Prod2__Prod3__Prod421/01/07__1______0_______1_____0___22/01/07__5______1_______2_____3___23/01/07__8______0_______1_____2___24/01/07__3______3_______4_____3___25/01/07__2______0_______1_____4___26/01/07__1______2_______6_____2___
So the first row would have the product name, Left hand column has the order date and then the sum of all the orders within
Any pointers on how to achive this would be great.
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Jan 31, 2005
I have asked a similar question on SQLTemp.com, but I thought I would ask here in case there are people here that don't visit SQLTeam and can help me.
I have to tables:
tbSiteworkPriceList
ItemID | Descr | Material | Labour | Travel | Boarding
-----------------------------------------------------
1 | Finishing | 0.25 | 28 | 42 | 65
tbSiteworkCostTypes
CostTypeID | Descr
-------------------
1 | Materials
2 | Labour
3 | Travel
4 | Boarding
Now, the tabels above are a sitework price list for an estimating package. The tbSitworkCostTypes table is used to trace the value of the particular item back to an account after the item is added to a takeoff. My questions are:
1) How should I tie each items variable (Material, Labour, Travel, Boarding) to its appropriate cost type?
2) Should I divide the table tbSiteworkPriceList above into 2 tables as shown below?
tbSitworkPriceList
ItemID | Descr
1 | Finishing
tbSiteworkCostItems
fkItemID | fkCostTypeID | Price
-------------------------------------------
1 | 1 | 0.25
1 | 2 | 28
1 | 3 | 42
1 | 4 | 65
This seems to be a little better in the point of view that each item variable is linked to the appropriate cost item by joining the tables tbSiteworkCostItems to tbSiteworkCostTypes. They have to be linked because after the takeoff is generated, the dollar values have to be imported into an accounting system where the account code and cost type code are determined by the "CostTypeID". Any thoughts?
Mike B
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Apr 9, 2008
I've been assigned to do the data access layer for an existing SQL database created by someone else. Amazingly enough, the primary table, the one containing all of the records that are central to the db and the whole project, has over 3000 entries and no unique identifer (autonumbered ID) column. The data in all of the other columns is repetitious so none of them can be used as a primary key. I have added a column called TaskAssignmentID, designated as an int data type. The goal is to somehow autofill this column with sequential numbers and then designate that column as the primary key. (don't you just love fixing other people's mistakes?) Any suggestions/examples on how to accomplish this the easiest, most efficient way?
For reference purposes, the table is called tbl_MCHS and the newly created column is called TaskAssignmentID. The data type of the column can be changed, if that would make it easier.
Tools available include Visual Studio 2005 (very familiar) and SQL Server 2005's SQL Server Management Studio (less familiar).
Things I am restricted from doing include blowing away the table and starting over or strangling the previous developer (I asked about both). :-)
Any and all suggestions, steps, or examples will be appreciated.
Thanks,
John
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Sep 28, 2005
Hi I have a problem. I have a replicated database. Now I have a couple of tables within the database where I delete the content row by row and caluted the new record and insert them. Now when I do this on the development system that is unreplicate it is fine. However on production that is replicated I get this error:
System.Web.HttpUnhandledException: Exception of type System.Web.HttpUnhandledException was thrown. ---> System.Data.SqlClient.SqlException: INSERT statement conflicted with COLUMN FOREIGN KEY constraint 'FK_VARLISTS_USERVARLISTS'. The conflict occurred in database 'BHP', table 'USERVARLISTS', column 'AutoID'.
INSERT statement conflicted with COLUMN FOREIGN KEY constraint 'FK_VARLISTS_USERVARLISTS'. The conflict occurred in database 'BHP', table 'USERVARLISTS', column 'AutoID'.
INSERT statement conflicted with COLUMN FOREIGN KEY constraint 'FK_VARLISTS_USERVARLISTS'. The conflict occurred in database 'BHP', table 'USERVARLISTS', column 'AutoID'.
Now I persume this is caused by the foreign key being contrained by the replicated database. I had though about unticking the box 'Enforce Relationship for replication' but I am not sure what problems this may cause.
Woudl this fix my problem? If not do you have any idea what would.
Thanks Ed
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Aug 6, 2007
I wish to use the same data to update 2 different tables.
There is no green arrow output from the OLE DB data destination, so I can't have another component following on from the first insert.
This means I have to use the Multicast to 'copy' the data prior to the first table insert.
I can then use the data to perform inserts to both tables.
However, there is an FK constraint between these two tables, so I need to wait until the first table insert has finished before performing the second table insert.
How can I do this? How can I make the second insert dependent on the first?
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May 22, 2008
Hello,
I am building a winforms .net 3.5 application which connects to a SQL Server 2005 database with SQL server authentication. Is it possible to access the SQL Server password policy and expiration through the .NET 3.5 framework? I would like add the following functionality to my login form:
Ensure passwords meet policy standard.
Prompt a user to change their password when it is due to expire in 5 days or less.
Thanks in advance.
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Feb 12, 2008
All,
I have a situation where I need to identify redundant rows within a table. Here is the schema of the table:
create table Temp.Response (
TempKey int identity(1,1) not null primary key clustered,
ResponseId char(27) not null,
StudentUin char(9) not null,
TemplateId char(27) not null,
MidEndFlag char(3) not null
)
Here is a sample dataset that represents the production data:
TempKey | ResponseId | StudentUin | TemplateId | MidEndFlag
1 2008-02-12-08-10-43-3434648 317003316 2008-01-31-10-12-27-4882454 Mid
2 2008-02-12-08-11-40-5279829 317003316 2008-01-31-10-12-27-4882454 Mid
3 2008-02-11-21-29-12-1254611 516007344 2008-01-31-10-32-26-2359751 Mid
4 2008-02-11-21-30-34-7326988 516007344 2008-01-31-10-32-26-2359751 Mid
5 2008-02-11-21-31-24-2804312 516007344 2008-01-31-10-32-26-2359751 Mid
6 2008-02-11-21-31-47-1742947 516007344 2008-01-31-10-32-26-2359751 Mid
7 2008-02-11-18-52-25-3689636 614001463 2008-01-31-10-32-26-2359751 Mid
8 2008-02-11-18-54-11-7500029 614001463 2008-01-31-10-32-26-2359751 Mid
9 2008-02-11-22-13-59-9139208 614001606 2008-01-31-10-32-26-2359751 Mid
10 2008-02-11-22-14-50-5822454 614001606 2008-01-31-10-32-26-2359751 Mid
11 2008-02-11-22-15-47-6257351 614001606 2008-01-31-10-32-26-2359751 Mid
12 2008-02-11-23-23-31-4431851 614001756 2008-01-31-10-32-26-2359751 Mid
13 2008-02-11-23-24-06-4806990 614001756 2008-01-31-10-32-26-2359751 Mid
I need to identify the ResponseId values for rows that contain redundant StudentUin/TemplateId/MidEndFlag values, so that I can delete those rows. ResponseId, while not the primary key, is a unique value in this dataset. I thought I might use a cursor to parse this, but the real dataset is exceedingly large, and would like a set-based solution.
Best,
B.
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Feb 27, 2015
I have two procedures Sp1 and Sp2. The Sp1 is calling from Sp2. If there come new parameters or removed from the first procedure Sp1 then it will effect the Sp2 and its execution will break if required changes not done. So I want that when any changes making in SP1 then i need alert about the Sp2 changes.
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Jul 12, 2007
I am trying to create a login using my application.
The application creates the user and password itself .
when working with sql server 2000 it works fine.
when i try to install my application with sql server 2005 it is displaying the error .
'Password does not meet windows policy requirements
because it is not complex enough'
I want to keep the same password.
Is there any way to disable/uncheck this option by default?
Prashant
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