Error 547 sql server

error 547 sql server

547 is the error code used for any constraint violation, not just foreign keys, e.g.: create table T (ID int not null, constraint CK_Not1 CHECK (ID!= 1)) go. SQL Server throws the error msg 547. SQL Server Error Messages - Msg 547 - DELETE statement conflicted with COLUMN REFERENCE constraint Constraint Name. The conflict occurred in database.

: Error 547 sql server

Error 547 sql server
AN UNKNOWN ERROR HAS OCCURRED ILLUSTRATOR CS2
Error unresolved external

Error 547 sql server - opinion

Symptoms

When you update the primary key column of the primary key table in Microsoft SQL Server 2005 by changing the case of the existing column values or by padding column values, you receive the following error message:

Msg 547, Level 16, State 0, Line 1

The UPDATE statement conflicted with the REFERENCE constraint "<Constraint>". The conflict occurred in database "<Database name>", table "<Table name>", column '<Column name>'.

For example, this problem occurs in both the following situations.

Example 1

  • You create two tables by using a case-insensitive collation such as the SQL_Latin1_General_CP1_CI_AS collation.

  • You build a primary key and foreign key relationship between these two tables.

  • You update the primary key column of the primary key table by changing the case of the existing column values.

Example 2

  • You create two tables.

  • You build a primary key and foreign key relationship between these two tables.

  • The ANSI_PADDING setting is set to OFF.

    Note By default, the ANSI_PADDING setting is set to OFF.

  • You update the primary key column of the primary key table by padding the column values.

Cause

This problem occurs because values that are equal at the type level may be distinct at the binary level.

For example, at the type level, N'a' is equal to N'A'. However, at the binary level, N'a' is not equal to N'A'. The optimization mechanism incorrectly assumes that the update operation that changes the case does not make any real changes. Therefore, the PK-FK check is unsuccessful.

Resolution

Service pack information

To resolve this problem, obtain the latest service pack for SQL Server 2005. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

913089 How to obtain the latest service pack for SQL Server 2005

Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. This problem was first corrected in SQL Server 2005 Service Pack 3.

More Information

For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

Remove maintenance plans left after a server rename.

Many times when upgrading SQL Server or migrating to new hardware, it is necessary to rename the server when it’s ready to be used as production.  However, if any maintenance plans created before the server was renamed are still present after the rename, you may find that trying to delete the old jobs results in error 547 (below).

Drop failed for Job ‘User Databases – Full Daily Backup.Subplan_1’. (Microsoft.SqlServer.Smo)

The DELETE statement conflicted with the REFERENCE constraint “FK_subplan_job_id”. The conflict occurred in database “msdb”, table “dbo.sysmaintplan_subplans”, column ‘job_id’.
The DELETE statement conflicted with the REFERENCE constraint “FK_subplan_schedule_id”. The conflict occurred in database “msdb”, table “dbo.sysmaintplan_subplans”, column ‘schedule_id’.
The statement has been terminated.
The statement has been terminated. (Microsoft SQL Server, Error: 547)_________________________________________________________________________

Here are the steps to correct the problem:

— Find the maintenance plan name and id that you want to delete.

— Write down the id of the one you want to delete.

SELECT name, id FROM msdb.dbo.sysmaintplan_plans

 

— Place the id of the maintenance plan you want to delete

— into the below query to delete the entry from the log table

DELETE FROM msdb.dbo.sysmaintplan_log WHERE plan_id = ‘<<id from 1st query>>’

— Place the id of the maintenance plan you want to delete

— into the below query and delete the entry from subplans table

DELETE FROM msdb.dbo.sysmaintplan_subplans WHERE plan_id = ‘<<id from 1st query>>’

— Place the id of the maintenance plan you want to delete

— into the below query to delete the entry from the plans table

DELETE FROM msdb.dbo.sysmaintplan_plans WHERE id = ‘<<id from 1st query>>’

Now you can delete the jobs from Management Studio. 

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I'm looking at some code (I didn't write it!) to test that our code catches two error conditions upon attempting to delete a table row where dependencies exist.


The code originally looked for specific text in the message rather than using the error number.


In order to provide multi language support it would be better to catch the exception based on the error number rather than the error message.


In the test there are two sets of text the code is looking for and I can't seem to ascertain what the difference is, so am uncomfortable just checking for error number 547.



  1. The DELETE statement conflicted with the REFERENCE constraint...

  2. The DELETE statement conflicted with the SAME TABLE REFERENCE constraint...


Is it safe to assume that both error messages will have an error number of 547?
Cheers
Colin



Some Code Answers





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