Is Is A Good Practice To Use Autoincrement In Access
Dec 2, 2005
Hi just new here in the forum i have a question
is it a good practice to use autoincrement fields in an access database for master and detail? and for unique record identification. if not please tell why..
im currently using access and with autoincrement for unique record identification and for master and detail.. then there is a possibilities to transfer from access to mssql. will i encounter problems when migrating since i am using an autoincrement fields
in mssql is there an autoincrement fields like access?
dont be harsh ok.. just anoob trying to learn. :eek:
I know that <asp:SqlDataSource> is fast, but is it a good practice to use this. The sqldatasource is right there in the aspx page and the SQL for sqldatasource is also right there.Does that not break the 3 tier model, as normally we call a database layer and we have all the SQL's there. In one of the code in saw the following. I don't know if it is a good practice to do something like this. <asp:DropDownList ID="CountryDropDownList" runat="server" DataSourceID="SqlDataSource2" DataTextField="PickListLabel" DataValueField="PickListValue" OnDataBound="hidePanel"> </asp:DropDownList><asp:SqlDataSource ID="SqlDataSource2" runat="server" ConnectionString="<%$ ConnectionStrings:webrepos %>" SelectCommand="SELECT [PickListLabel], [PicklistValue] FROM [PickList_Values] WHERE (([ObjectName] = @ObjectName) AND ([FieldName] = @FieldName)) ORDER BY [AbbrCode]"> <SelectParameters> <asp:Parameter DefaultValue="Account" Name="ObjectName" Type="String" /> <asp:Parameter DefaultValue="Country__c" Name="FieldName" Type="String" /> </SelectParameters> </asp:SqlDataSource>
hi experts, i have a postcode database that i need to update. the database cnotains of 6tables, the file i ahev has all the information at once, so i have to organize it and insert records into the appropriate tables. this is the first time i'm doign this so i would like to know what the best way to do? do i need to create a stored procedure or a script, or may be something special and efficient that i do not know yet. any advise will be very appreciated thanks in advance
I would like to have a stored procedure executed once a week via a DTS package. The data I would like inserted into Table_2, which is the table where the DTS is being executed on, comes from a weekly dump from Oracle into a Table_1 via another DTS package.
I would like to only import data since the last import so I was thinking of my logic to be like this:
INSERT INTO Table_2 (Field1, Field2, ... , FieldN) VALUES (SELECT Field1, Field2, ... , FieldN FROM Table_1 WHERE ThisDate > MAX(Table_2.ThatDate))
Does this make sense? Or do you all suggest a different mannger of accomplishing this?
I'm sure this has been asked plenty of times before, so I'm after a link to a good answer.
I have tens of thousands of milk crates, holding dozens of different types of milk in hundreds of locations. I am used to working with objects but not databases. For this situation however I want the security of SQLServer transactions to track, for example, when a robot moves a crate from one location to another.
I am thinking of using SQLServer as a store. On startup I want to get my ecosystem of objects out of the store. While I am running, I'll just use objects. When I change an object property I want it to securely persist. I don't want to snapshot the whole menagerie of object states, just update the values that changed. Which will sometimes include the addition or deletion of objects. How do I do this? Is there an example somewhere that does this (or approximately this)?
I use VB and have Visual Studio 2005. (Which, by the way, is stunning. I thought all that "you will use less time and code more and better" talk was just hype. But its for real. Amazing product.)
Hi All, I need to send out email when error occurs in the package. Is it a good practice to put the send email task in the event handler? Then MaximumErrorCount is set to 1. But for some reason, some time I saw more than one email are sent out. Please advise. Thanks
I am inserting new records stored in SQL Server into a legacy MS Access application using SSIS. During the transformation, I need to get the ID MS Access assigned to the autoincrement column in the MS Access table I am inserting the row into. Is this possible? Can someone give me an example?
i have a table for storing username and password. the following are the fields in table ID -int UserName-nvarchar(50) Password-nvarchar(50)
i dont want to have a separate field for id i want to autincrement them plz give me an idea am using SQLServer Express am new to this field so plz forgive me for this simple question
Hi All I am using SQL server Database in one of my table there is a column which is set to Identity=Yes i.e., The ID is increment by one on every insert and if the insertion failed then the id generated goes off then in the next generation it uses new id ..........EXfirst insertion id=1 then in the second insertion if while adding data to other rows if i get some error then the id 2 is not used and when i correct the error and insert it then id=3? can any one give me the solution for this and NextWhen i delete the datafrom the table see the ids are upto 20 and i delete all the records from the table after insertion of new record the id will be 21plese help me in this
This may sound quite easy for you, however I am a newbie in SQL.
So I have an identity field, which I wish to increment automatically every time I do an insert. However the starting integer has to be the MAX value from another table.
So for example I am doing an insert in a #temp table INSERT INTO #temp(name, surname) SELECT name, surname from table1
Now the personId of the #temp table has to start from the MAX of table2 Ie SELECT MAX(personId) from table2
The SELECT MAX(personId) from table2 can also be NULL, ie the first time I am inserting, so I also have to cater for this scenario.
Hi all, i am deleting rows of a table and reinserting new ones. This table has an auto increment primary key. what is the function used to set it to zero each time i delete the rows in order to rebegin counting from 1 when i refill the table. Thanks in advance...
I created a new table in sql server 2005. Primary key is autoincrement value of 1. But when I insert the row, it increments by 4. It goes like 1, 5, 9 etc..what could be the problem ?how can I correct it? Do I need to reseed it? Thanks!!
looking for necessary syntax to alter table id to autoincrement adding identity statement, not sure on syntax for seed an increment, or if it is possible at all.
I noticed in SQL ODBC API reference that SQLGetTypeInfo would return true for AUTO_INCREMENT if a smallint field is defined as autoincrement. Is there a simple way to set a field autoincrement thru the SQL Server`s front end?
I have 2 tables: 1. CommandCode( id AutoIncrement_integer, name string ) 2. FooCode( FooID integer, CommandCodeID integer)
I have the following stored procedure
PROCEDURE InsertRows( CodeName VARCHAR ) INSERT INTO CommandCode ( name ) VALUES (CodeName)
Now right here I need to INSERT INTO the "FooCode" table using the same ID that was just added to the CommandCode table. How can I retrieve the last inserted autoincrement value for "id" in the CommandTable without doing SELECT id FROM CommandCode WHERE name = CodeName
END PROCEDURE
Is there an easy way to do what I described above? If possible I want it to comply with SQL standards (e.g. no MS SQL specific code)
Hi all! Does anyone knows how to get if a column is autoincrement or not, using the DatabaseMetaData in java, or using de JTurbo driver for it? Is there any other way to figure this out? :confused:
I am creating a trigger in SQL Server that will activate when my Athelete table has something "Inserted"
So far it works except for the fact that it won't insert a null into the Equipment_ID field. I need it to autoincrement, or do the last number + 1...
CREATE TRIGGER TRG_NEW_EQUIPMENT1 ON ATHLETE AFTER INSERT AS BEGIN INSERT INTO Equipment Equipment_ID, Equipment_Model, Equipment_Year, Equipment_Brand, Equipment_Color, Equipment_Condition_Rating) VALUES ('Big Spin','2016','K2','Blue','5') END; GO
Hi,I'm enclosed a snippet of test code which highlights my problem. The Storedprocedure insertValue should insert text into the parent, then insert othertext into the child table but the 2 tables should auto increment in sync(i.e. so that they both end up with the same id numbers). I've tried takingthe auto increment out of the child table but then I don't know how to getthe right parent id into the child table.Any advice appreciated - this is my first database, so I'm just in thelearning process really. Code follows:CREATE TABLE Parent(id INTEGER DEFAULT AUTOINCREMENT,parenttext VARCHAR(16),PRIMARY KEY (id))!CREATE TABLE Child(childID INTEGER INTEGER DEFAULT AUTOINCREMENT,childtext VARCHAR(16),FOREIGN KEY (childid) REFERENCES Parent(id),PRIMARY KEY (childID))!CREATE PROCEDURE insertValues(in p VARCHAR(16), in c VARCHAR(16))BEGINinsert into parent (parenttext) values (p);insert into child (childtext) values (c);END!call insertValues('from parent', 'from child')!select * from parent, child where parent.id = child.childid!
I have a table in my sqlserver 2000 that has a field IDNO. i want thisfield to be my primary key. however i don't want this field to use theautoincrement feature. when i access this table from vb.net and try toadd a record this field is autoincrementing. how can i disable theautoincrement of this field yet serves this as my primary key?thanks in advance
What I need to achieve is - everytime that a new line is inserted into an orderlines table part of the primary key will be the OrderId and the OrderLineId should be auto-incremented from 1 for each OrderId in the OrderLines table.
I know i can do this manually in my program, but i'm just wondering if theres a way to achive this in SQL Server?
Hy! I am a beginner in SQLServer and I have to design a database with a lot of tables (30-50 tables). I have to choose a primary key for every table between an autoincrement and a GUID. If I choose autoincrement after an insert statement (from the client) I will have to go back to the server to get the value of the primary key which is a waste of time. On the other hand if I choose a GUID I can create the guid from the client and send him with the other values of the new row to the server and I have not to go back to the server. I am aware of the disk space of a guid field so which is the best for me: GUID or AUTOINCREMENT? Thank you!
I use Microsoft SQL Server and also I have several tables. One table has ID like PK, and name. ID use autoincrement number mode, and now when I want start form one but not from 156 or like that. I don't know how? And also when I delete all data from table an run my apllication and add something in table, it starts form last number, not from one.
Hi, im trying to insert values into 2 different tables. The primary key in the first table is an auto increment field, which is then the foreign key in the 2nd table.Is there any way to retrieve the autogenerated value before performing the second insert. I have done some searching on the matter, but to no avail.I tried using LAST_INSERT_ID() but i get the error message that it is not a recognized function name. The other option is using @@identity but i cant see how to put that into my SQL statement.Can anyone help please.Thanks in advanceGareth
I'm getting reports of a strange problem with an ASP.NET application I've written. I've checked the database tables and the problem is definately a strange one, and one I've yet to pin down or even recreate.On this system, clients can type in their details through a .NET 2.0 wizard. At the end of the wizard their data is stored on the database using several linked tables. It's always worked for me and my client, but now when their clients are using it, some of the data is missing. The problem, however, is that I can't see how it can just disappear and was wondering if someone could shed some light on SQL.There are two tables that are baffling me. Their structure is like this:Table 1id - autoincrement columnnameaddressetc ...Table 2id - autoincrement columncontactDetailsetc ...The contactDetails column on table 2 is taken from the id column of table 1. When a new record is added to table 1, it obviously increments the id for the new row, then it takes this id (using scope_identity()) and writes it to the contactDetails column of table 2 when a new row is added to that table. All straightforward enough.However, for some reason, some of the new rows in table 1 are missing and yet, the contactDetails column of table 2 contains the ids of those missing rows. How is that even possible? Can there be situations where MSSQL 2000 will generate/return an id even when it has failed to write to the database?
I want to access sqlserver table properties from asp.net .How do i know that a table defined in sqlserver has autoincrement field or not.Actually i have to access all the tables in a database and execute different function for table with auto increment on and off. I am not being able identify this property from codes.Please help.thank you
Im still learning my way around SQL and queries and i was wondering : How do you get a SQL Table to autoincrement a Guid? (is it "Is Identity?" or "RowGuid"....) How would i create a new row with a new Guid, and insert into the values i want without specifying the Guid?
