Not Able To Generate Id Like E001 With Identity
Apr 6, 2007
Hello Members,
Is it fine to create the unique sequence number id using the int or uniqueidentifier field ?
I want to further generate the id sequence id like with that consisting of the table initials with id to differ from other id.
Like,i m having a table name of employee then it should have the
where it is primary key and also in other table where it is foreign key.
e001.........
or
e01...........
or
e1............
which gets differ from the other.
If i select the field which is alphanumeric like char or varchar then there's no autoincrement in id.
Is there any way for this solution.If anyone know then pls kindly reply me.
I think it can be solve with substring function but i don't have the exact idea how to use it...
I m using asp.net with C# 2005 and sql server 2005.
So,if possible then pls kindly give some solution which is related to C#.
Have already created the autogenerated id and stored in database.
I m using stored procedure for insert of the data.
Thanxs in advance for a reply..
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Jul 20, 2005
We are converting a legacy visual foxpro system to use a SQL back-end.A number of (existing DBF) tables currently have a zero-filled primarykey eg. '000255' which is just an auto-incrementing key - but alwaysstored as a char field with leading zeros.For backward compatibility we are considering retaining this primarykey and using an identity field to auto-generate the next value, thenconvert the new identity value into the new primary key. So ifidentity is 256 then the key field will be assigned '000256'.Now the problem with this is that the primary key must be non-null andunique so must be given a value in the INSERT statement. But, theidentity value isn't available (I presume) until after the INSERTstatement has executed.Is this a "don't go there" kind of problem?ThanksAndrew GrandisonSA Department of HealthAdelaide, South Australia
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May 11, 2004
Hi, I have the lovely task of overhauling some of our SQL-based systems. I've found many tables that don't have unique identifying numbers that really should have them. I've searched around and people keep mentioning the Identity field as being similar to Autonumber in Access. The only examples I could find involved setting up a new table... but I need to add (and populate) an identity column to an existing database table. Does anyone know the command for this?
Example... my table is called PACountyTown. It currently has 3 columns: County, Town, and Area. I wish to call the identity-ish field RecordID.
Thanks in advance!
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Mar 3, 2008
Hello everybody,I was configuring a SqlDataSource control using SQL Authentication mode.I first added a database file (testdb.mdf) through Solution Explorer-Add New Items. Then through Database Explorer I created a table named "info"Then while configuring the SqlDataSource control I used the SQL Authentication mode and attached the "testdb.mdf" database file.Test Connection showed success. But when I hit the Ok button of the wizard it displayed the following error message:Failed to generate a user instance of SQL Server. Only an integrated connection can generate a user instance.While configuring the SqlDataSource control I clicked "New Connection". Under Data Source section I tried both Microsoft SQL Server and Microsoft SQL Server Database File. And in both the cases I attached a databese file(testdb.mdf). Plz enlighten me on this.Thanks and Regards,Sankar.
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Jul 9, 2006
While I have learned a lot from this thread I am still basically confused about the issues involved.
.I wanted to INSERT a record in a parent table, get the Identity back and use it in a child table. Seems simple.
To my knowledge, mine would be the only process running that would update these tables. I was told that there is no guarantee, because the OLEDB provider could write the second destination row before the first, that the proper parent-child relationship would be generated as expected. It was recommended that I create my own variable in memory to hold the Identity value and use that in my SSIS package.
1. A simple example SSIS .dts example illustrating the approach of using a variable for identity would be helpful.
2. Suppose I actually had two processes updating these tables, running at the same time. Then it seems the "variable" method will also have its problems. Is there a final solution other than locking the tables involved prior to updating them or doing something crazy like using a GUID for the primary key!
3. We have done the type of parent-child inserts I originally described from t-sql for years without any apparent problems. (Maybe we were just lucky.) Is the entire issue simply a t-sql one or does SSIS add a layer of complexity beyond t-sql that needs to be addressed?
TIA,
Barkingdog
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Jun 30, 2006
I want to insert a new record into a table with an Identity field and return the new Identify field value back to the data stream (for later insertion as a foreign key in another table).
What is the most direct way to do this in SSIS?
TIA,
barkingdog
P.S. Or should I pass the identity value back in a variable and not make it part of the data stream?
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Jan 25, 2015
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?
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Sep 19, 2005
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
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Jun 19, 2008
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
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Aug 1, 2014
I'm working with a third-party database (SQL Server 2005) and the problem here is the following:
- There are a bunch of ETL processes that needs to insert rows on a table (let's call this table T) and at the same time, an ERP (owner of T) is up and running (reading, updating and inserting on T).
- The PK of T is an Integer.
Today all ETL processes uses (select max(ID) + 1 from T) to insert new rows, so just picture the scenario. It is a mess! Everyday they get duplicate key error when 2 or more concurrent processes are trying to insert a row (with the max) at the same time.
Considering that I can't change the PK, what is the best approach to solve this problem?
To sum up:
* I need to have processes in parallel inserting on T
* I can't change anything on T
* The PK is NOT an Identity
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Aug 12, 2009
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'.
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Jan 9, 2007
Hi!
When MS published starter kits there were files .sql in App_Data. This files contained some sample data for a DB. How to create such files when I have database with data ?
Jarod
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Oct 20, 2007
how generate an xml file from data in sqlserver2005
and read it in sql again
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Nov 20, 2002
One of my first tasks on my current project was to generate all of the SQL scripts needed to rebuild the database. Of course, one of the catches was that everything needed to be separated out (table columns in different script from PKs different from FKs different from DEFAULTs, etc., etc.). And we wanted our own comment block inserted. So, I couldn't just use the Generate SQL Script from Enterprise Manager and be done with it. I was going to need to do some more work. Well, here's one of the scripts I wrote to build the FK scripts. Execute this script, then copy & paste the results into a new window. Break apart into separate .sql files as desired.
NOTE: Be sure to show results in Text (not grid) and change the display options in QA to return more than just 256 characters.
/***************************************************************************************************
Author: Mark Caldwell
Date: 11/15/2002
Descrip: Generate scipt commands to ADD FOREIGN KEY CONSTRAINTS for constraints already in DB.
NOTE: Be sure to set your Tools/Options/Results/Maximum Characters per column to a
large enough number (such as 2000) to display the entire command.
***************************************************************************************************/
SELECT
'----------------------------------------------------------------------------------------------------
-- ' + so2.name + ' to ' + so3.name + '
----------------------------------------------------------------------------------------------------
IF OBJECTPROPERTY(OBJECT_ID(N''' + so1.name + '''), ''IsForeignKey'') = 1 BEGIN
ALTER TABLE ' + so2.name + ' DROP CONSTRAINT ' + so1.name + '
PRINT '' -- DRP - ' + so1.name + '''
END
G' + 'O
ALTER TABLE ' + so2.name + '
ADD CONSTRAINT ' + so1.name + '
FOREIGN KEY (' + ISC1.COLUMN_NAME + ')
REFERENCES ' + so3.name + '(' + ISC2.COLUMN_NAME + ')
PRINT '' -- ADD - ' + so1.name + '''
G' + 'O
'
FROM sysforeignkeys sfk
JOIN sysobjects so1 on sfk.constid = so1.id
JOIN sysobjects so2 on sfk.fkeyid = so2.id
JOIN sysobjects so3 on sfk.rkeyid = so3.id
JOIN INFORMATION_SCHEMA.COLUMNS ISC1 on so2.name = ISC1.TABLE_NAME AND sfk.fkey = ISC1.ORDINAL_POSITION
JOIN INFORMATION_SCHEMA.COLUMNS ISC2 on so3.name = ISC2.TABLE_NAME AND sfk.rkey = ISC2.ORDINAL_POSITION
ORDER BY so2.name
Edited by - AjarnMark on 11/20/2002 02:46:11
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Oct 22, 2006
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Feb 15, 2008
Hello everyone.
i need to auto generate the user id in id colunm in my sqldatabase table.i want it to generate in this fashion.(mycompanyname-todaydate-number.)eg (ibm-15thfeb-1) (ibm-15thfeb-2) (ibm-16thfeb-1)here i need this user id to be automatically displayed in my web form when doing registration of new user,then only after clicking the savebutton i want all the data along with user id to be inserted into the table in sqldatabase.thanksjack.
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Jul 16, 2005
Hi, I have a question, I have created a table and with a primary key called "ID". However, I want the "ID" be auto increment as well. when inserting new record into the database.I'm using vb.net. how can I do in the following format: "1", "2", "3", ............ etc. I've the code below but it's not working in the right way, what's wrong with my code?
Private Sub BtnAdd_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnAdd.Click
Dim ssql As String
Dim Itemid As Integer
Dim updcmd As SqlClient.SqlCommand
Itemid = 0
mysqladap = New SqlClient.SqlDataAdapter("select MAX(Item_id) From auction where item_type= '" & (Image1.ImageUrl) & "'", mySqlConn)
Itemid = (Itemid) + 1
ssql = "insert into auction (item_id,owner_name,owner_mail,owner_mobile,owner_phone,owner_ext,item_type,item_name,item_image,item_desc,item_cost,start_date) values ('" & (Itemid) & "','" & Trim(ownertxt.Text) & "' ,'" & Trim(emailtxt.Text) & "', '" & Trim(mobiletxt.Text) & "', '" & Trim(phonetxt.Text) & "','" & Trim(exttxt.Text) & "','" & Trim(DropDownList1.SelectedValue) & "','" & Trim(itemtxt.Text) & "','" & Trim(Image1.ImageUrl) & "','" & Trim(desctxt.Text) & "','" & Trim(costtxt.Text) & "','" & Trim(Today.Date) & "')"
updcmd = New SqlClient.SqlCommand(ssql, mySqlConn)
updcmd.ExecuteNonQuery()
lblmsg.Visible = True
End SubAnyone can help me? Thanks.
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Apr 2, 2001
Are there any scripts available with anyone, for generating SQL scripts for all the objects in a server?
Thanks
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Apr 2, 2001
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Thanks for the help
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Jun 7, 2002
Is there a way to write a dts package that will Generate SQL Scripts for a particular database? I am just learning dts and would like to automate this process that I run on weekly basis.
Thanks,
Steve
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Nov 13, 2006
can I generate excel from stored procedure?
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May 2, 2006
hi all,
how to generate txt file from sql table. I want text file with respective columns without any seperator between columns. and if for an example a column of int having 5 digits but i want it in text file with 10 digits with remaining all as blanks. guide me how to do this.
thnks in adv
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Apr 28, 2008
This is my first time on sqlteam forum so a big hello to everyone!!
Firstly I am very noive user of sql to say the least, but i have be requested to create a .txt file
Its for a program that will read the txt file i create to produce a letter i.e I will be extracting, TITLE, FORENAME, SURNAME etc
MR
JOE
BLOGGS
Here is the my code so far, like i said i am a very novice user so try to help me and not condem me for my lack of knowledge!
SELECT
LPA_INPUT.INPUT_TITLE,
LPA_INPUT.INPUT_SURNAME,
LPA_HISTORY.LPA_AMT,
LPA_HISTORY.ELIG_RATE,
LPA_HISTORY.RATE_REBATE,
LPA_HISTORY.RR_AMT,
LPA_HISTORY.LPA_APPLIC,
LPA_HISTORY.LPA_AMT
FROM LPA_HISTORY, LPA_INPUT
WHERE LPA_HISTORY.CLAIM_NO = LPA_INPUT.CLAIM_NO
----------------------------------------------------
Iv been asked to have these eight fields looping over and over for all the records in the database, So im not to how to do that and how to generate it in a txt file?!
Keith
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Jul 29, 2005
--This procedure will generate the Structure of a table
Create Procedure GenerateScript (
@tableName varchar(100))
as
If exists (Select * from Information_Schema.COLUMNS where Table_Name=@tableName)
Begin
declare @sql varchar(8000)
declare @table varchar(100)
declare @cols table (datatype varchar(50))
insert into @cols values('bit')
insert into @cols values('binary')
insert into @cols values('bigint')
insert into @cols values('int')
insert into @cols values('float')
insert into @cols values('datetime')
insert into @cols values('text')
insert into @cols values('image')
insert into @cols values('uniqueidentifier')
insert into @cols values('smalldatetime')
insert into @cols values('tinyint')
insert into @cols values('smallint')
insert into @cols values('sql_variant')
set @sql=''
Select @sql=@sql
+case when charindex('(',@sql,1)<=0 then '(' else '' end +Column_Name + ' ' +Data_Type +
case when Data_Type in (Select datatype from @cols) then '' else '(' end
+case when data_type in ('real','money','decimal','numeric') then cast(isnull(numeric_precision,'') as varchar)+
','+case when data_type in ('real','money','decimal','numeric') then cast(isnull(Numeric_Scale,'') as varchar)
end when data_type in ('char','nvarchar','varchar','nchar') then cast(isnull(Character_Maximum_Length,'') as varchar) else '' end
+case when Data_Type in (Select datatype from @cols)then '' else ')' end
+case when Is_Nullable='No' then ' Null,' else ' Not null,' end
from Information_Schema.COLUMNS where Table_Name=@tableName
select @table= 'Create table ' + table_Name from Information_Schema.COLUMNS where table_Name=@tableName
select @sql=@table + substring(@sql,1,len(@sql)-1) +' )'
select @sql as DDL
End
Else
Select 'The table '+@tableName + ' does not exist'
Madhivanan
Failing to plan is Planning to fail
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Apr 22, 2007
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in sql 2005 - when i do generate it seems to attach a file --
I want to generate a script that I can then modify and use to create a new db -- is this possible?
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Jun 4, 2007
Hi All!
I was thinking of creating a custom generated IDs for my table. I would like the ID to be something like "HR001" or "IT001", the two letter prefix would indicate the dept it belongs to. Initially I thought of having a table that will hold all the seed values for the IDs but I realize that this could have some concurrency problems if there will be a multiple number of users are creating a record at the same time. So now I have totally no idea on how to deal with the concurrency problem.
I will not be using this as a primary key because I already have the Identity field to be my primary key, though of course this field would definitely be unique. I will just be using this to display in the UI.
Any inputs would be greatly appreciated.
Thanks!
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Jul 13, 2007
Hi,
Do someone know if there is a SP_ or XP_ function for help me create a script of create table? I can do it "on-line" by right click a table in Enterprise-Manager (all properties;generate sql-script), but I want to "call a command" to do this.
Very glad if someone know!
//Lotta
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