Foreign Key Points To Not Most Appropriate Index Of Referenced Table
Sep 23, 2015
The parent table has the column OrderID which is the primary key. There is a unique non-clustered index in the same table with the same column and some included ones. A child table references the parent table on the OrderID column. Unfortunatelly, in the sys.foreign_keys table the index that has been used to acomplish the referential integrity is the unique non-clustered one instead of the primary key (which is the clustered index as well).
This is causing issues in some maintenance tasks where we need to disable all the indexes of the table apart from the clustered index. Disabling these indexes leeds to disabling the not properly configured foreign key as well. Maybe dropping the index create the constraint again and then recreate the index is a workarround but I wish to have something more elegant and future proof.
Here is my issue I am new to 2005 sql server, and am trying to take my old data which is exported to a txt file and import it to tables in sql. The older database is non relational, and I had made several exports for the way I want to build my tables. I built my packages fine and everything is working until I start building relationships. I remove my foreign key and the table with the primary key will get updated for the package again. I need to update the data daily into sql, and once in it will only be update from the package until the database is moved over.
It will run and update with a primary key until I add a foreign key to another database.
Here is my error when running the package when table 2 has a foreign key.
[Execute SQL Task] Error: Executing the query "TRUNCATE TABLE [consumer].[dbo].[Client] " failed with the following error: "Cannot truncate table 'consumer.dbo.Client' because it is being referenced by a FOREIGN KEY constraint.". Possible failure reasons: Problems with the query, "ResultSet" property not set correctly, parameters not set correctly, or connection not established correctly.
Am working on sql database table shifting to new database tables. Am getting the following error while truncating the tables:-
Cannot truncate table 'orderItem' because it is being referenced by a FOREIGN KEY constraint.How can i remove all the items in the table if i found this error.
I know that TRUNCATE TABLE can be used to reset the identity counter, but it can't be used on a table referenced by a foreign key. Anybody knows how to do that? Thanks.
I am migrating data. I found a strange thing in the existing table, there is a column named workshopCaseID in a TruancyCase table ,The datatype for workshopCaseID is an int (null). it is a FK, there are some records are 0 values, but the fk referenced primary table only have 1-8 values, how are the 0 values get inserted there?
I have a "case" table describing what type of social worker case and who performed work on the case. Four case workers are referenced within each case and all workers belong to the "worker" table. I am trying to present the case worker name on a detailsView rather then the much simpler task of showing the worker's index stored within the case. I can't seem to get the correlation names working.
SelectCommand="SELECT [ReportID], [RecCreated], tblVCaseType.Description AS cType, [IntakeDate], tblVCounty.Description AS County, [Abuse], [Neglect], [Dependency], [AfterHours], [Screenout], tblVScreenOutcome.Description AS Outcome, [Closed], [ClosedDate], iWorker.[Worker Name], cWorker.[Worker Name] , tblVAssessmentType.Description AS aType, tblVTimeframe.Description AS tFrame, tblVDisposition.Description AS Dispo , tblVProgramXfer.Description AS Xfer,
[Code] ...
Getting only one worker name is easy. But, I need all four. I have tried many versions without success. The error from this version is repeated 4X:
The multi-part identifier "tblVWorker.ID" could not be bound.
Hello, I have an SQL problem that is hard to describe so here's an example scenario:
a) company has a personnel database, identifying each person in the company and their assigned role(s).
b) tblPersonnel has a row per person, key is 'PersonnelID' c) tblRoles is a list of all the roles in the company (administrator, clerk, shipper, truck-driver, etc.), key is 'RoleID'
d) tblPersonnelRoles is a cross-reference of all the roles assigned to each person - in simple format of:
PersonnelID | RoleID
Given all the above, I need to have a select statement that produces one row per person, and list all the fields from tblPersonnel AS WELL AS identifies each role assigned to the person.
I'm no SQL guru .. is this even possible?
I know there are alternative solutions (e.g., to write code that for each Personnel does a lookup in Roles) but for one particular situation I need a single SQL statement, or even Stored Procedure.
Thanks in advance, Rick Piovesan Detaya Corp Aurora, Ontario, Canada
What is the general consensus regarding indexing of foreign keys in tables?
I have a lot of queries that perform inner joins from the 'primary key' table to a 'foreign key' table. I was wondering if there are any special considerations to take into account.
For example, I think in some RDBMS, foreign keys are sort of automatically assigned indexes? Is there anything that SQL Server automagically does in the background when a foreign key constraint is created that may affect whether something should be indexed?
ManagerID, ManagerID2, ManagerID3, ManagerID4 are all pointing to EmployeeID in the same table.
Now I want to select the all employee records where the manager NAME is like '%Raymond%'. (i.e. any of the four managers name is like '%Raymond%'.
How do I construct the select query? I tried this, but it does not work if there are more than 1 manager named 'Raymond'
DECLARE @Name varchar(50) SET @Name = '%Raymond%'
DECLARE @EmployeeNumber nvarchar(50) Select @EmployeeNumber = EmployeeID from Employee where [Name] like @Name
SELECT 'HumanResources.Employee' as TableName, E.[Name] as EmployeeName , isnull((Select [Name] from Employee E2 where E2.EmployeeID = E.ManagerID),'') as Manager1, isnull((Select [Name] from Employee E2 where E2.EmployeeID = E.ManagerID2),'') as Manager2, isnull((Select [Name] from Employee E2 where E2.EmployeeID = E.ManagerID3),'') as AppraisingManager, isnull((Select [Name] from Employee E2 where E2.EmployeeID = E.ManagerID4),'') as ModeratingManager, E.CurrentFlag as Active FROM HumanResources.Employee E
WHERE (E.[ManagerID] = @EmployeeNumber) or (E.[ManagerID2] = @EmployeeNumber) or (E.[AppraisingManagerID] = @EmployeeNumber) or (E.[ModeratingManagerID] = @EmployeeNumber))
Greetings everyone, I'm posting this thread with the hope that someone will notice it and might offer me a helping hand regarding one of my problems.I have the database named "DBEXAMPLE" with the table MEMB_INFO that contains two important columns that are named cur_points and points where cur_points column contains the total available points that a member can use/spend on a game and the points column stores the total of the points that a member used so far.So as i plan to wipe all data of the database, i need to keep the member login,password and total points that each member purchased.So i will somehow need to update the cur_points column with the total of current cur_points+points columns and then wipe points column.I've personally asked a friend regarding this and he said that this should be something complicated and it might require php also.Really appreciate if someone could help me regarding this.small schema:Database: DBEXAMPLETable: MEMB_INFOColumn cur_points -> total available points that a member can spendColumn points -> total points that the member has already spentColumn memb___id -> member login aka account idTODO -> update cur_points column with the total of cur_points+points columns for each member(buyer)With best regards.
I need to retrieve the pts from table #test1 based on the fields when mapped..
Name & Type columns should match ..Based on the data below the output should be
id NameTypeCode CityIType BPS 1EGFN432 HY F2 10 2 EG FN 432 ON F1 20 3 EG FN 433 On F1 30
It has order of priority to get points
1.When all of the field matches then get the respective pts . 2.When name and Type matched and rest fields doesnt match but is null in #test2 table then retrieve those pts
--drop table #test --drop table #test1 Create table #test ( id int identity(1,1) not null, Name varchar(100) NULL,
In my SSIS package I have flat files as a source, I have to load numbers of flat files into SQL target table. I am using For each loop container for that. I am doing it correctly. My aim is to validate the source data from all angle before writing it into target sql table. I am using below points to validate the source data , if I found any bad data I am redirecting those data to error output.
To Checking
1. To check whether data type of column. 2. To check whether buisinesskey column null.
Is there any thing which I am missing to validate source data.
I like to define my procedure parameter type to match a referenced table colum type, similar to PL/SQL "table.column%type" notation. That way, when the table column is changes, I would not have to change my stored proc. Any suggestion?
I'm running a merge replication on a sql2k machine to 6 sql2k subscribers. Since a few day's only one of the merge agents fail's with the following error:
The merge process could not retrieve generation information at the 'Subscriber'. The index entry for row ID was not found in index ID 3, of table 357576312, in database 'PBB006'.
All DBCC CHECKDB command's return 0 errors :confused: I'm not sure if the table that's referred to in the message is on the distribution side or the subscribers side? A select * from sysobjects where id=357576312 gives different results on both sides . .
Hi everyone, When we create a clustered index firstly, and then is it advantageous to create another index which is nonclustered ?? In my opinion, yes it is. Because, since we use clustered index first, our rows are sorted and so while using nonclustered index on this data file, finding adress of the record on this sorted data is really easier than finding adress of the record on unsorted data, is not it ??
I want to make a query, stored procedure, or whatever which will only display the primary key where there does no exist a foreign key in linked table.For example. If I had two tables with a one to many relationship.A [Computer] has one or more [Hard Drives]. I want to select only those computers which do not have a Hard Drive(s) associated with them. That is, show all computers where the Computer_ID field in the [Hard Drives] table does not exist. This seems simple but I'm drawing a blank here.
I need to delete records from a table (Table1) which has a foreign key column in a related table (Table2).
Table1 columns are: table1Id; Name. Table2 columns include Table2.table1Id which is the foreign key to Table1.
What is the syntax to delete records from Table1 using Table1.Name='some name' and remove any records in Table2 that have Table2.table1Id equal to Table1.table1Id?
Previously same records exists in table having primary key and table having foreign key . we have faced 7 records were lost from primary key table but same record exists in foreign key table.
it is attributed ? Hi everyone, My table contains columns that are goreign keys to other tables. How can i tell to which table/column each fk is attributed ? Thanks
Between all this tables exist one or more foreign key restriction but I don't know them. However I know than exist a row in the SYSOBJECTS (system table) per each one of the foreing key restriction, using this information I want to build a query than back to me something like this:
Type Table1 Field1 Table2 Field2 -------------------------------------------------------------------------------------------------------- FK Orders fk_Client Clients id_Client FK DetailOrders fk_Order Orders id_OrderFK
I was thinking of adding tables to ASPNetDB.mdf and have one of those tables have column userid as a foreign key from aspnet_Users When I try to create relationship in Diagram, I get error saying that "data typ properties does not match" userid in aspNet_Users is uniqueidentifier and userid (fk) in new table is int What should I use, should I do that at all?
I have created two tables in phpMyAdmin 3.5.8.1. comments which stores comments users post on a website and registration which stores a users registration details (username, password, e-mail etc, etc).
I want to add the username field from the registration table as a foreign key to the comments table. How do I do this in phpMyAdmin?
use default pubs database in sqlserver2000. use authors table and publishers table.
Write a query to list first name, last of all authors and name of the publisher (if any) present in the same city as the author. If no publisher is present in the city where the author is located then the column should contain a NULL value. If there is more than one publisher in the city where the author is located, then the details of the author are to be repeated for each publisher.
but there is no field match between authors table and publishers table.
There is itemlookup table, which stores item number and itemdescription. Also there is a child table, pricehistory, of theitemlookup table, which stores different prices and different dateranges. So it is one-to-many relationship. (Price can be stored morethan one with a different date range)And there is another table RequestItem that stores the foreign key ofthe itemlookup table to show the information of the itemlookup table.Then how do I know later which date range of the price was stored inthe RequestItem table? Since I only keep the foreign key of theitemlookup table, it will be impossible to keep track of the row of thepricehistory table if there are more than one data existed in thepricehistory table.Will it be a valid table structure to create a column for the foreignkey of the pricehistory in RequestItem table or any other ways tohandle this issue?
Here ID is the foreign key. I was wondering if there was a way to update tables with foreign keys. Searching for stuff gave me something like update cascade. Can somebody please elaborate on that?
I've just found out about the concept that a table should only be references by foreign keys a maximum of 253 times throughout the database. I was hoping someone could give me a better idea of the dangers of disregarding this recommendation.
In our database, we have a Users table, which contains all of the users of a given system. In nearly every other table in our database, we have a field to indicate which user created the record. This is a reference back to the Users table. But as the number of tables has grown, we've surpassed that 253 limit. All I can tell, practically, is that I can no longer delete from the Users table. The query will fail, telling me the query optimizer ran out of memory, and that I should simplify my query.
The Users table is the only table that even comes close to this number of foreign key references. I don't even mind being unable to delete from the table. I'm mostly wondering if there are other problems with my design that will cause issues?
Is there a better way to keep track of who created a record in the database? Is it bad design to reference my Users table in so many places?
ALTER FUNCTION [dbo].[f_spn_GetCustomerNo] ( -- Add the parameters for the function here ) RETURNS int AS BEGIN RETURN 12441 END
This function is used as the default for a Customer_No column in every table. Now I want to change the UDF to RETURN 11564 but when I attempt to Alter Function I get the error:
Cannot ALTER 'dbo.f_spn_GetCustomerNo' because it is being referenced by object 'DF__tm_spn_eq__Custo__5C6CB6D7'.
which is a table that is using the UDF as a default. Is there any way around this with the exception of removing the default from every table, changing my function, and then resetting the default?
