Remove Cascade Update And Delete From Table

Jul 12, 2007

hello, once upon a time when i created my db (originally in access then used the conversion tool, which i now know is wrong!) i thought it would be an amazing idea to have cascading updates and deletes, however it turns out now this is exactly not what i want! if i leave them in then it throws errors when i delete records out of my stock table as related records are in the order_line table here is the code (well i think so, im not the best at sqlserver as you probably can tell already) that im using if anyone can help or point me in the right direction that would be great, thanks USE [nashdfDB1]GO/****** Object:  Table [dbo].[tbl_stock]    Script Date: 07/13/2007 02:52:14 ******/SET ANSI_NULLS ONGOSET QUOTED_IDENTIFIER ONGOSET ANSI_PADDING ONGOCREATE TABLE [dbo].[tbl_stock](            [Stock_ID] [int] IDENTITY(1,1) NOT NULL,            [cat_id] [int] NOT NULL CONSTRAINT [DF__tbl_stock__cat_i__15502E78]  DEFAULT ((0)),            [sub_cat_id] [int] NULL CONSTRAINT [DF__tbl_stock__sub_c__164452B1]  DEFAULT ((0)),            [location] [int] NULL CONSTRAINT [DF__tbl_stock__locat__173876EA]  DEFAULT ((0)),            [n_or_sh] [varchar](50) NULL,            [title] [varchar](255) NULL,            [description] [varchar](255) NULL,            [size] [varchar](50) NULL,            [colour] [varchar](50) NULL,            [cost_price] [decimal](9, 2) NULL CONSTRAINT [DF__tbl_stock__cost___182C9B23]  DEFAULT ((0)),            [selling_price] [decimal](9, 2) NULL CONSTRAINT [DF__tbl_stock__selli__1920BF5C]  DEFAULT ((0)),            [qty] [varchar](50) NULL,            [date] [datetime] NULL CONSTRAINT [DF__tbl_stock__date__1A14E395]  DEFAULT (getdate()),            [condition] [varchar](255) NULL,            [notes] [varchar](255) NULL,            [visible] [bit] NULL CONSTRAINT [DF__tbl_stock__visib__1B0907CE]  DEFAULT ((1)),            [picture1] [varchar](50) NULL,            [picture1_thumb] [varchar](50) NULL,            [picture2] [varchar](50) NULL,            [picture2_thumb] [varchar](50) NULL,            [picture3] [varchar](50) NULL,            [picture3_thumb] [varchar](50) NULL,            [picture4] [varchar](50) NULL,            [picture4_thumb] [varchar](50) NULL,            [display_price] [varchar](50) NULL,            [created_by] [varchar](50) NULL,            [buying_in_recipt] [varchar](255) NULL, CONSTRAINT [tbl_stock$PrimaryKey] PRIMARY KEY CLUSTERED (            [Stock_ID] ASC)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]) ON [PRIMARY] GO
SET ANSI_PADDING OFF

 

Regards

Jez

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How To Alter The Table With Delete/update Cascade Without Recreating The Table

Jul 26, 2004

I have contract table which has built in foreign key constrains. How can I alter this table for delete/ update cascade without recreating the table so whenever studentId/ contactId is modified, the change is effected to the contract table.

Thanks


************************************************** ******
Contract table DDL is

create table contract(
contractNum int identity(1,1) primary key,
contractDate smalldatetime not null,
tuition money not null,
studentId char(4) not null foreign key references student (studentId),
contactId int not null foreign key references contact (contactId)
);

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Jul 23, 1999

Is it possible to cascade update and delete while DRI remains there ? That
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Jan 15, 2007

Hi, I have a database which saves data about bus links. I want to provide a information to passenger about price of their journay. The price depends on three factors: starting busstop, ending busstop and type of ticket (full, part - for students and old people, ...).
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When the busstop is deleted or type of ticket I want all data connected with it to be deleted automatically. I wanted to use cascade deleting.
But I receive a following exception: Introducing FOREIGN KEY constraint 'FK_TicketPrices_BusStops1' on table 'TicketPrices' may cause cycles or multiple cascade paths. Specify ON DELETE NO ACTION or ON UPDATE NO ACTION, or modify other FOREIGN KEY constraints.
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Oct 23, 2004

Hello:
Need some serious help with this one...

Background:
Am working on completing an ORM that can not only handles CRUD actions -- but that can also updates the structure of a table transparently when the class defs change. Reason for this is that I can't get the SQL scripts that would work for updating a software on SqlServer to be portable to other DBMS systems. Doing it by code, rather than SQL batch has a chance of making cross-platform, updateable, software...

Anyway, because it needs to be cross-DBMS capable, the constraints are that the system used must work for the lowest common denominator....ie, a 'recipe' of steps that will work on all DBMS's.

The Problem:
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This appears possible in SqlServer too --...as long as there are no CASCADE operations.
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So -- please correct me if I am wrong here -- it appears that the operations would be
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The questions are:
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c) ANY and all tips on things I might run into later that I have not mentioned, are also greatly appreciated.

Thanks!
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Hello
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I tried to delete a row from the parent table and was given this error:
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Error]  Incorrect syntax for definition of the 'TABLE' constraint
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for MS SQL 2000
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Sep 6, 2007

Hi,
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€¦.
€¦.

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€¦.
€¦.
€¦.

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€¦.
€¦.
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€¦.
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Sep 20, 2007

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Hi,
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Hi all,

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I think that the constraints are simply held in one of the system datatables, is there anyway to simply update that table?

 

 

 

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