How To Refer A Column When The Referencing Column Is An Identity Column
Oct 16, 2006
Hi all,
The requirement is to have a table say 'child_table', with an Identity column to refer another column from a table say 'Parent_table'..
i cannot implement this constraint, it throws the error when i execute the below Alter query,
ALTER TABLE child_table ADD CONSTRAINT fk_1_ct FOREIGN KEY (child_id)
REFERENCES parent_table (parent_id) ON DELETE CASCADE
the error thrown is :
Failed to execute alter table query: 'ALTER TABLE child_table ADD CONSTRAINT
fk_1_ct FOREIGN KEY (child_id) REFERENCES parent_table (parent_id) ON DELETE
CASCADE '. Message: java.sql.SQLException: Cascading foreign key 'fk_1_ct' cannot be
created where the referencing column 'child_table.child_id' is an identity column.
Using SQL Server 2000. How can I refer to one alias in another column?E.g., (this a contrived example but you get the idea)SELECT time, distance, (distance / time) AS speed, (speed / time) AS acceleration FROM dataNote how the speed alias is used in the definition of acceleration alias but this doesn't seem to work.
I need to create a table (Named as C) with a foreignkey column. That column should references with a primarykey column in table A and a primarykey column in table B. Is this possible?
Hi, I am having problem in bulk update of a sql server table haning identity column from a datatable( has no identity column) using sqlbulkcopy. I tried several approaches, but it does not show any error nor is the table getting updated. But the identity value seems to getting increased every time. thanks. varun
Hi guys, If I have a temporary table called #CTE With the columns [Account] [Name] [RowID Table Level] [RowID Data Level] and I need to change the column type for the columns: [RowID Table Level] [RowID Data Level] to integer, and set the column [RowID Table Level] as Identity (index) starting from 1, incrementing 1 each time. What will be the right syntax using SQL SERVER 2000?
I am trying to solve the question in the link below: http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=2093921&SiteID=1
Thanks in advance, Aldo.
I have tried the code below, but getting syntax error...
ALTER TABLE #CTE ALTER COLUMN [RowID Table Level] INT IDENTITY(1,1), [RowID Data Level] INT;
I have also tried:
ALTER TABLE #CTE MODIFY [RowID Table Level] INT IDENTITY(1,1), [RowID Data Level] INT;
when i alter non identity column to identity column using this Query alter table testid alter column test int identity(1,1) then i got this error message Msg 156, Level 15, State 1, Line 3 Incorrect syntax near the keyword 'identity'.
Hello; My Memebership table has Guid column as Primary key. But I would like to add Auto numbering Identity column to this table. Is this idea OK or it will bring some problems? Thank you in advance for your help
Hi(SQL Server 2000)I have an existing table (t) with a column that is NOT an identity column(t.ID), but it has manually inserted "row numbers". I want to make thiscolumn become an identity column. This column is a key field to othertables, so I want to keep the row numbers that are allready inserted.From the Query Analyzer, how do I do this?Thanks in advance!Regards,Gunnar VøyenliEDB-konsulent asNORWAY
I posted a thread in the Getting Started forum about how to make a counter for maximum tickets : http://forums.asp.net/t/1215258.aspx but maybe this is a more appropriate forum for this subject. In a school project, we are making a website for a fictional concert/festival (using Visual Studio 2005, C#). On that site users can register and order tickets. We have access to an SQL-database, by the way, where we can create tables etc. We want the maximum amount of tickets to be 10000 per day. The festival is supposed to last from friday to sunday. What would be the best way to do this programatically? The counter should maybe be in an own database table?
I have a excel file which has a column called "Code" and their values are A,B,C,D,E,F,G,H. I want to create a new column called "status" based on the values of "Code".
Code:
A B C D E F G H
If A,C,E,G then "status" = "Active" else if B,D,F,H then "Status" = "Inactive". I like to do it using "Derived Column".
Excuse me if my terminlogy is inaccurate, i'm a .NETer that's new to SQL.
I was wondering if it's possible to reference a column in the WHERE CLAUSE that has been customily defined in the SELECT statement
for example
select employeeID, case when JobCode = 'A' then 'Accountant' case when JobCode = 'C' then 'Consultant' case when JobCode = 'B' then 'Biller' End as JobType from Employee where JobType is not null
This does not work, and saids JobType is an invalid column name. Basically, what I want is to display the jobtype of the employee but i also want to only display the employees that are Accountants, consultants and billers.
Is this possible and what would be the best way of doing this?
I do not seem to be about to reference JobType in the WHERE statement.
Excuse me if my terminlogy is inaccurate, i'm a .NETer that's new to SQL.
I was wondering if it's possible to reference a column in the WHERE CLAUSE that has been customily defined in the SELECT statement
for example
select employeeID, case when JobCode = 'A' then 'Accountant' case when JobCode = 'C' then 'Consultant' case when JobCode = 'B' then 'Biller' End as JobType from Employee where JobType is not null
This does not work, and saids JobType is an invalid column name. Basically, what I want is to display the jobtype of the employee but i also want to only display the employees that are Accountants, consultants and billers.
Is this possible and what would be the best way of doing this?
I do not seem to be about to reference JobType in the WHERE statement.
I receive the following error when creating a CHECK constraint that references another column. According to the good old Wrox SQL Server book, I'm using the correct syntax. Anyone have any ideas???
Thanks in advance!
Server: Msg 8141, Level 16, State 1, Line 1 Column CHECK constraint for column 'end_date' references another column, table 'Session'.
Here's an example of the script that I'm using: CREATE TABLE Session ( session_key char(18) NOT NULL, course_key char(18) NOT NULL, site_key char(18) NOT NULL, instructor_key char(18) NOT NULL, start_date smalldatetime NULL, end_date smalldatetime NULL CHECK (end_date >= start_date) )
It says : The number of columns in the referencing column list for foreign key 'staff_fk' does not match those of the primary key in the referenced table 'Staff'.
Hi everybody, I know that it is possible for one column to reference two different parent tables by defining two foreign keys on a same column, I have done it and SQL Server does give any error. But I want to know that is it advisable to define multiple foreign key on a column referncing two differnt parent table's primary key in differnt case... ? Means If Case 1 then It should reference to column1 or table1 otherwise it should reference to table2? How is it practicle...?
I have the following problem running an sp with a table variable (sql server 2000) - the error which occurs at the end of the query is: "must declare the variable @THeader" . @THeader is the name of the variable table and the error occurs with such references as @THeader.ApplyAmt, @THeader.TransactionHeaderID, etc.
declare @THeader TABLE ( TransactionHeaderID [int] NOT NULL , PatientID [int] NOT NULL , TransactionAllocationAmount [money] NOT NULL , ApplyAmt [money] NULL ) - create table variable
insert into @THeader select TransactionHeaderID,PatientID,TransactionAllocationAmount,ApplyAmt from mtblTransactionHeader where PatientID = 9 - fill the table variable
UPDATE @THeader set TransactionAllocationAmount = (SELECT isnull(Sum(mtblTransactionAllocation.Amount),0) FROM mtblTransactionAllocation where mtblTransactionAllocation.DRID = TransactionHeaderID or mtblTransactionAllocation.CRID = TransactionHeaderID) from @THeader, mtblTransactionAllocation - do the updates on the table variable
Update @THeader set ApplyAmt = (SELECT mtblTransactionAllocation.Amount FROM mtblTransactionAllocation where mtblTransactionAllocation.DRID = TransactionHeaderID and mtblTransactionAllocation.CRID = 187 and PatientID = 9) from @THeader, mtblTransactionAllocation - do the updates on the table variable
- below is where the problems occur. It occurs with statements referencing columns in the table variable, i.e. @THeader.ApplyAmt
UPDATE mtblTransactionHeader SET mtblTransactionHeader.TransactionAllocationAmount = @THeader.TransactionAllocationAmount, mtblTransactionHeader.ApplyAmt = @THeader.ApplyAmt FROM @THeader, mtblTransactionHeader WHERE @THeader.TransactionHeaderID = mtblTransactionHeader.TransactionHeaderID - put the values back into original table
I need to set the IDN column as identity column with same existing value for current existing data in the table but when new data insert in next row the IDN column must be autogrowth with next append value.
I have a table with 3 computed columns, the first two reference a function for there value. The last computed column should be total of the other computed columns, however when trying to write the formula for this column SQL Server rejects it.
Am i correct in thinking it is not possible to reference other computed columns in a computed column's forumla.
My current work around is to call the functions again that the other computed columns use to generate the total, though this seems to me like a performance issue.
Any ideas how can I pass date range values from the where clause of an outer query to the inner correlated subquery ... without using a stored procedure because I am using Report Builder?
Using the simplified sql below I need the average freight charge between the dates for all of the ShipCountry's orders. (I have hard coded the dates for demo purposes only as it is these that I need referenced from the outer query's where clause.)
select OrderDate, ShipCountry, ShipCity, Freight, /* how do I get to the outer query's date range ? */ (SELECT AVG(Freight) FROM Orders WHERE ShipCountry = O.ShipCountry AND OrderDate between '01-jan-1997' and '01-jan-2000') AS CountryAverageFreight from Northwind.dbo.Orders O where ShipCity = 'Paris' and OrderDate between '01-jan-1997' and '01-jan-2000'
I have table of three column first column is an ID column. However at creation of the table i have not set this column to auto increment. Then i have copied 50 rows in another table to this table then set the ID column values to zero.
Now I have changed the ID column to auto increment seed=1 increment=1 but the problem is i couldn't figure out how to update this ID column with zero value set to each row with this auto increment values so the ID column would have values from 1-50. Is there a away to do this?
Ok,I just need to know how to get the last record inserted by the highestIDENTITY number. Even if the computer was rebooted and it was twoweeks ago. (Does not have to do with the session).Any help is appreciated.Thanks,Trint
I have been trying to get the new sol_id that is added so I can use it in other code, but it is only returning 0. The new record is getting added to the table, but my varaiable myNewSolID is 0 in my response.write(myNewSolID) I appeaciate any help! Here is my steored procedure and my code: ALTER PROCEDURE [dbo].[AddTrackings]
@DropDate datetime, @Comment nvarchar(100), @DateEntered datetime, @EnteredBy nvarchar(50), @Sol_ID Int OUTPUT AS INSERT INTO tblTrackings (DropDate, Comment, DateEntered, EnteredBy)
Dim ConnectStr As String = _ ConfigurationManager.ConnectionStrings("2ConnectionString").ConnectionString
Dim MySQL As String = ""
If Me.chkDropSave.Checked Then MySQL = "AddTrackings" Dim MyConn As New SqlConnection(ConnectStr) Dim Cmd As New SqlCommand(MySQL, MyConn) Cmd.CommandType = CommandType.StoredProcedure Dim InsertedInteger As New SqlParameter("@Sol_ID", SqlDbType.Int) InsertedInteger.Direction = ParameterDirection.Output Cmd.Parameters.Add(InsertedInteger)
Dim MySqlParamStart As New SqlParameter("@DropDate", SqlDbType.DateTime) Cmd.Parameters.Add(MySqlParamStart) MySqlParamStart.Value = Me.BasicDatePickerDropDate.SelectedValue
Dim MySqlParamAmtTo As New SqlParameter("@Comment", SqlDbType.NVarChar, 100) Cmd.Parameters.Add(MySqlParamAmtTo) MySqlParamAmtTo.Value = Me.txtComment.Text
Having an identity column in target table, how do I use SQL 7 DTS ?
In Import wizard, I chose 'ignore' in source, checked Enable Indenity Insert - DTS failed with a msg like - a column cannot have NULL...
In DTS package, had Fast load and Enable Indenity checked - no luck !
Unchecked Enable identity, do luck.
What would be the standard procs for this since this sounds like a very common senario. What I am expecting is to insert from source and SQL would take care identity column automatically. Appreciate your help very much !
I want to know how to reset the identiy column when i delete a row from the existing table.
Example:
I have a table a with id (identity incr value 1) and name
I have 10 records inserted into it.,which would be from 1...thru...10 i delete a record say 5 then i have 1,2,3,4,6,7,8,9,10, now i want them to be rearranged to systamatic order like 1,2,3,4,5,6,7,8,9 how can i do this.
