Identity Fields
Mar 16, 2004how do I start an auto increment field at a certain number? other than 1
View 2 Replies
ADVERTISEMENT
Identity Fields - Why Use Them
May 29, 2007I am building a database for a new project. I am not a DBA or a database designer so please bear with me on this question.
My boss believes that the only time to use an identity column is when we cannot determine a unique primary key. On tables where we can determine a unique primary key identify fields are a waste of reasources. For instance, one of the tables that I need to create is a customer table. Since all of our customers have unique customer numbers my boss believes that in this case an identity column is useless. I don't have enough experience to determine if he is correct or not.
Can someone please explain the pro's and con's of using identity fields to me.
Thanks
Advanced Identity Fields
Apr 19, 2007Hi!
a) PROBLEM 1:
I have set up my main database like this (of course I'm showing an abbreviation):
company - int (identity)name - nchar
I have several companies stored in the previous table. Now I have another table with messages:
company - int (related with the company of the previous table)messageID - int (identity)contents - nchar
company and messageID are the main key of this table. I want to set the messageID column to change automatically. Since I declared it as identity it is working fine, but I was looking to start it on 0 on every new company:
Company messageID0 00 10 21 0 <- Here the company changed, so the messageID resets1 11 21 32 0 <- Again2 1
Any suggestions?
b) PROBLEM 2:I have my database stored locally on my computer. When I finished working with the database it has a lot of data for testing. I want to upload the database to my hosting provider or to my customer's. But the identity columns keep incrementing since the last value of my tests, so it's kind of annoying to see values as: 1250, 223, etc. when I expect to see 0,1, 2 and so on. Also, for receipts this is a very important issue.
How can I reset the identity fields?
Thank you very much for your attention and help.
CT
Some Problem With Identity Fields
Aug 8, 2007HiI've a tabel with two columns as identity fields (one as primary key), but I read in SQL 2000 documentation that it is permitted only one column as identity, it's true?The second field has to be autoincrement so I supposed to use identity field for it...Now the true problem, supposing that I can use two identity fields...I'd like to reset the second identity when the year change... In other words, I've to manage some spedition which are identified with XXX/year, where XXX is a number.Coming from Oracle, I supposed to use a trigger on insert which reset the sequence when the year changa, but in MS??Tnx...
View 2 Replies View RelatedIdentity/autonumber Fields
Sep 13, 1999I am experiencing a problem with the identitynumber field in SQL vs the autonumber field in MS Access 97. When I open the Member Contact form(Access), it generates the autonumber on the form, which is then visible on the form itself. That form has several pulldown/pop-up boxes which are used to select criteria. One of the form buttons, the Add Comments button, once pushed, it brings up a Comments form. This Comments form references the autonumber that was generated on the Member Contact form in order to open itslef. The information is then entered into the Comments form and the form is then saved. All the selected information is saved to that record upon the saving of that form.
Now, my problem has to do with getting the identity number(SQL) to generate on the Member Contact form and also allowing the Comment form to open by referencing that generated identitynumber just like Access does without having to save the record first then coming back and adding a comment later.
Do anyone know if it is possible? If so, does anyone have any suggestions on how to generate a identitynumber before saving the entire record?
Adding Identity Fields
Nov 2, 1998I have a table that I need to add an identity field to. I created a field in the table as an INT and added values to all of the existing records. When I try to change it to an IDENTITY field I continually get an error saying 'Invalid cursor state' . The help function tells me that this is caused by not having enough space in the transaction log but I don't understand this b/c the trans log is configured to expand as needed. Anyone know how I can do this?
Thanks,
Tony
Identity Fields As Primary Key In Server 7.0
May 13, 1999Most of the tables in my database are implemented with IDENTITY columns as the primary key.
When an INSERT from my application is attempted, sometimes I get an error returned stating that insert
cannot be done because of duplicate key value. If I try the INSERT again, sometimes it works(??). Of course,
DBCC CHECKIDENT resets the identity value if trying the INSERT again doesn't work. Then sometime a little later, the problem happens again.
Is there anything I can do other than placing into my application code the execution of dbcc checkident
anytime I want to do an insert to prevent the error? By the way, DBCC CHECKDB revealed no problems.
HELP!
Setting Identity Fields In Queries
Mar 8, 2004Hello,
I am relativley new to SQL and have a question about identity fields.
I am creating a script to run everynight to insert records into a support table in a database. one of the fields is a identity field that is updated everytime a record is added locally or over the web.
Some records that are added into the database locally by users do not get added into theis support table, but so those new people entered in can use the website a entry must be added to this support table.
I am working on a script to take the records that where added by users and automatically put them in every night using a basic schedueled job.
The identy number is updated everynight in a table that collects all the important identiy numbers. I would like to use this table to alter the seed value and then increment by one every time a new record is added. This is my only sticking point so far.
Any help would be greatly appreciated.
Kenn Brown
Replication Issues With Identity Fields
May 12, 2007Hi,
I am trying to replicate our application database (SQL server 2005) using transactional replication to another server. What I did was, took a backup of the live database and restored in backup server with same name. Then did a transactional replication. Issue is we have few tables having Identity columns defined as primary keys and 'Not for Replication' option of these tables is 'NO'. But once published, this becomes 'Yes' and also replication failed showing an error as
Explicit value must be specified for identity column in table <table name> either when IDENTITY_INSERT is set to ON or when a replication user is inserting into a NOT FOR REPLICATION identity column.
In the table article, for the parameter 'Action If name is in use', I have selected 'Drop the existing object and create a new one' (Also tried another option 'Delete Data'). How to resolve these issues.
Thanks in Advance,
Eldho Abraham
Multiple Updates And Identity Fields
Sep 27, 2006I have a table used by multiple applications. One column is an Identify field and is also used as a Primary key. What isare the best practices to use get the identity value returned after an INSERT made by my code.. I'm worried that if someone does an INSERT into the same table a "zillionth" of a second later than I did, that I could get their Identity value.
TIA,
Barkingdog
Constraint/identity Which Allows Duplicate Null Fields
Jan 4, 2007hi,
I've done Googling and forum hunting but haven't had success finding a simple answer... My table schema is such that it requires the (int) LinkedItemID field to be nullable but still those fields which are set must not be duplicates. I see constraint is out of question and also identity doesn't seem to fit since I'm not using autofill for this particular field. Is there some other way doing this on Sql Server 2005?
Thank you.
Access To SQL Conversion - Autonumber To Identity Fields
Nov 22, 2001I'm in the process of converting over an Access database - The existing Forms, Reports, etc are staying within the Access front-end and the Tables are now linked to the SQL database. The only problem is, most of the Tables contain Autonumber fields, so although they converted over to Identity fields, existing records work fine. When I try to add a new record, it doesn't automatically enter the next available Autonumber/Identity until I select a record which already exists to force it to update itself. When I add a new record using the original Access database, as soon as you start entering information into the new record, the next available Autonumber automatically appears. Any suggestions on forcing it to automatically appear using the SQL database and an Access form????
View 4 Replies View RelatedVery Simple Question: Cannot Create Table With Identity Fields Using SQL Sentences
Jan 26, 2007Hi, I'm trying to build a several tables using sql ce 3.1
I refer to the manual on Create Table:
ms-help://MS.SSCE.v31.EN/ssmprog3/html/143cad25-5c1d-4c96-bd8b-6a95dbfb1b00.htm
The sample:
CREATE TABLE MyCustomers (CustID int IDENTITY (100,1) PRIMARY KEY,
CompanyName nvarchar (50))
just simply doesn't work displaying this error:
SQL Execution Error
Executed statement: CREATE TABLE MyCustomers (CustID int IDENTITY (100,1) PRIMARY KEY,
CompanyName nvarchar (50))
Error Source: SQL Server Compact Edition ADO.Net Data Provider
Error Message: There was an error parsing the query. [Token line number =1,
Token line offset 40, Token in error=IDENTITY]
I tested against a SQL Desktop, everything is OK.
What's wrong with the sentence?
Please some advise or workaround will be appreciated
Thanks
MSCD Fernando Zorrilla de San Martín
Subreports: Parameter Value Dropdown Shows Sum And Count Fields But Not The Actual Data Fields.
Jan 28, 2008
I have just started using SQL Server reporting services and am stuck with creating subreports.
I have a added a sub report to the main report. When I right click on the sub report, go to properties -> Parameters, and click on the dropdown for Parameter Value, I see all Sum and Count fields but not the data fields.
For example, In the dropdownlist for the Parameter value, I see Sum(Fields!TASK_ID.Value, "AppTest"), Count(Fields!TASK_NAME.Value, "CammpTest") but not Fields!TASK_NAME.Value, Fields!TASK_ID.Value which are the fields retrieved from the dataset assigned to the subreport.
When I manually change the parameter value to Fields!TASK_ID.Value, and try to preview the report, I get Error: Subreport could not be shown. I have no idea what the underlying issue is but am guessing that it's because the field - Fields!TASK_ID.Value is not in the dropdown but am trying to link the main report and sub report with this field.
Am I missing something here? Any help is appreciated.
Thanks,
Sirisha
Creating A Table In SQL Server With Fields From Other Tables And Some Fields User Defined
Feb 20, 2008How can I create a Table whose one field will be 'tableid INT IDENTITY(1,1)' and other fields will be the fields from the table "ashu".
can this be possible in SQL Server without explicitly writing the"ashu" table's fields name.
Public Overridable ReadOnly Default Property Fields() As ADODB.Fields
Jan 26, 2008sir
I have got this error message to establish connction with recordset vb .net, Can you please rectify this
Too many arguments to 'Public Overridable ReadOnly Default Property Fields() As ADODB.Fields'
my code like this
rs = New ADODB.Recordset
rs.Open("Select * from UserLogin where userid='" & txtUserName.Text & "'", gstrDB, DB.CursorTypeEnum.adOpenStatic)
If txtUserName.Text = rs.Fields.Append(userid) Then
MsgBox("OK", MsgBoxStyle.OKOnly, "Confirmation")
End If
thanks
Last GASP On Insert Row In Table With Identity Field, And Get New Identity Back ?
Jul 9, 2006While 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
Insert Row In Table With Identity Field, And Get New Identity Back
Jun 30, 2006I 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?
Update Fields With Searched First Date Record Fields
Jul 23, 2005Hello !I'm trying to update one table field with another table searched firstdate record.getting some problem.If anyone have experience similar thing or have any idea about it,please guide.Sample case is given below.Thanks in adv.T.S.Negi--Sample caseDROP TABLE TEST1DROP TABLE TEST2CREATE TABLE TEST1(CUST_CD VARCHAR(10),BOOKING_DATE DATETIME,BOOKPHONE_NO VARCHAR(10))CREATE TABLE TEST2(CUST_CD VARCHAR(10),ENTRY_DATE DATETIME,FIRSTPHONE_NO VARCHAR(10))DELETE FROM TEST1INSERT INTO TEST1 VALUES('C1',GETDATE()+5,'11111111')INSERT INTO TEST1 VALUES('C1',GETDATE()+10,'22222222')INSERT INTO TEST1 VALUES('C1',GETDATE()+15,'44444444')INSERT INTO TEST1 VALUES('C1',GETDATE()+16,'33333333')DELETE FROM TEST2INSERT INTO TEST2 VALUES('C1',GETDATE(),'')INSERT INTO TEST2 VALUES('C1',GETDATE()+2,'')INSERT INTO TEST2 VALUES('C1',GETDATE()+11,'')INSERT INTO TEST2 VALUES('C1',GETDATE()+12,'')--SELECT * FROM TEST1--SELECT * FROM TEST2/*Sample dataTEST1CUST_CD BOOKING_DATE BOOKPHONE_NOC12005-04-08 21:46:47.78011111111C12005-04-13 21:46:47.78022222222C12005-04-18 21:46:47.78044444444C12005-04-19 21:46:47.78033333333TEST2CUST_CD ENTRY_DATE FIRSTPHONE_NOC12005-04-03 21:46:47.800C12005-04-05 21:46:47.800C12005-04-14 21:46:47.800C12005-04-15 21:46:47.800DESIRED RESULTCUST_CD ENTRY_DATE FIRSTPHONE_NOC12005-04-03 21:46:47.80011111111C12005-04-05 21:46:47.80011111111C12005-04-14 21:46:47.80044444444C12005-04-15 21:46:47.80044444444*/
View 3 Replies View RelatedTransact SQL :: Get One Row From Multiple Based On Fields And Also Get Sum Of Decimal Fields?
Jul 2, 2015I am using MS SQL 2012. I have a table that contains all the data that I need, but I need to summarize the data and also add up decimal fields while at it. Then I need a total of those added decimal fields. My data is like this:
I have Providers, a unique ID that Providers will have multiples of, and then decimal fields. Here are my fields:
ID, provider_name, uniq_id, total_spent, total_earned
Here is sample data:
1, Harbor, A07B8, 500.00, 1200.00
2, Harbor, A07B8, 400.00, 800.00
3, Harbor, B01C8, 600.00, 700.00
4, Harbor, B01C8, 300.00, 1100,00
5, LifeLine, L01D8, 700.00, 1300.00
6, LifeLine, L01D8, 200.00, 800.00
I need the results to be just 3 lines:
Harbor, A07B8, 900.00, 2000.00
Harbor, B01C8, 900.00, 1800.00
LifeLine, L01D8, 900.00, 2100.00
But then I would need the totals for the Provider, so:
Harbor, 1800.00, 3800.00
T-SQL (SS2K8) :: How To Update Identity Column With Identity Value
Jan 25, 2015I 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?
Identity...I Need To Get The Last (or Highest Number In Identity Column)...
Sep 19, 2005Ok,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
View 2 Replies View RelatedSearch Multipe Fields, Compounding Fields, Like, Contains...?
Jul 20, 2005I would like to search a table for a phrase, or for a partial phrase,eg on table product - for name or description, or name + descprition.How does one say select * from product where name + description like%phrase%or contains phraseCurrently I can get where name, or where descriotion like %phrase%,eg, where name like krups, or where description like coffee makerBut if I search for where name like %krups coffee maker% i get noresults. krups is in the name field, coffee maker is in thedescription field.Thanks,-M
View 1 Replies View RelatedProblem In Using Sqlbulkcopy To Insert Data From Datatable(no Identity Column) Into Sql Server Table Having Identity Column
Jun 19, 2008Hi,
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
How To Use Identity On Non-identity Column (with Concurrence)
Aug 1, 2014I'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
Update Fields With Data From Other Fields In Same Row
Jun 30, 2000Pardon me if this question is too elementary. I am trying to create a trigger that will cause certain datafields to be updated with values from other data fields in the same row when a certain column, created specifically to fire the trigger, is updated. The purpose of this is to reduce data entry by field personnel.I think I have the create trigger statement correct, but I'm a little confused on the update statement.
In a nutshell, how can I write something like:
UPDATE "TABLENAME"
SET DATAFIELD1 = DATAFIELD2
WHERE RECORDNUMBER = (THE SAME RECORD NUMBER)
I do know that I have to ensure that sp_dboption Recursive Triggers value is set to false, thanks.
Using LIKE To Find Any Of Fields In One Table In Fields Of Another
Jul 31, 2013 I have a list of items in one table and a field (pageName) in another table that may contain one of the aforementioned items somewhere within that field. There is no fixed position within the field where the itemNo may be so I can't just use SUBSTRING(pageName,2,5) in(select itemNo from tblItem).
Logically, it's like I need to combine IN and LIKE: select pageName where pageName LIKE IN %select itemNo from tblitemNo%..LIKE can only handle one comparison string.
Drillthrough In Calculated Fields Enable When Drillthrough Option Is Disable In Original Fields, Is This A BUG?
Jan 21, 2008Hi people
My users are having troubles with link to default drillthrough report when reports are exported to excel (they REALLY don't like this behavior ), so I decided set all of them disabled in report model, this work fine, but calculated field in reports has this drillthrough link.
Let me show you the situation. Entity Product has an UnitaryCost field, I set the EnableDrillthrough Property in False so when I export a report with this field, no link is shown.
But if I create in the report a calculated field Round(UnitaryCost) this field has a Drillthrough Link
Is this the standard and expected behavior? or its simply a BUG?
Have I done something wrong in my model? and in this case, How I can correct this?
regards.
Julio Diaz.
Transact SQL :: Alter Non Identity Column To Identity Column
Aug 12, 2009when 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'.
View 2 Replies View Related@@identity
Oct 26, 2006i have found loads of topics on this but have yet to find one that gives the answer i need.I want to display the last insert id into a label/textbox after the INSERT functionhow do i do this?
View 18 Replies View Related@@identity
Feb 29, 2008I got two tables
one table has the fields ie table1
orderid ofd orderdate customername
where order id is autonumber
the other table2
orderid ofd product id productname
the problem here is thatif customer purchases 3 product at a time all the 3 products get the same ofd number ........and any 2 customers can have the same ofd number................ now i have to pull the order ID value from table 1 to table 2............ can somebody help with this i am the front end is asp.net amd the database is done on SQL server management studio
@@IDENTITY
Mar 3, 2008Hi, I was looking through this thread about @@Identity: http://forums.asp.net/p/1039145/1443971.aspx#1443971 I'm still unsure how to ue it. I have an Orders table, a Products table and a Products_Orders table. When I add an order to the Orders table I want the PK OrderID in this table to also update the FK OrderID in my Products_Orders table. I'm using SQL EXP05 and I'm in C#.
View 1 Replies View RelatedGet Next Identity
Mar 11, 2008Hi i want to get the naxt identity number how can i get it pls help me very urgent
View 3 Replies View Related