Sql server alter table add identity existing column

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SQL Server table columns under the hood

  http://rusanu.com/2011/10/20/sql-server-table-columns-under-the-hood/
This is the layer at which you can look into sys.columns and see the table structure, or look at the table in SSMS object explorer and so on and so forth. When data is inserted into the new partition that is created after a column is dropped, the number of the maximum nullable columns in the new partition may be one less than the number of the maximum nullable columns in the old partition

  http://sqlserverzest.com/2013/09/17/sql-server-how-to-add-more-than-one-column-as-a-primary-key/
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  http://raresql.com/2014/03/16/sql-server-how-to-alter-an-existing-computed-column-in-a-table/
METHOD 1 : USING T-SQL In this method, we need to first drop the computed column and then add it as a new column to accommodate the altered computed column in any table. But hang on a second, instead of pressing the save button, press the generate script button to see what changes SSMS will implement in case of pressing save button

  http://www.codeproject.com/Questions/267871/alter-an-existing-table-in-sql-server-add-AUT
See more: SQL-Server Hi everybodyy,I have a table in sql server 2008 I need to alter it to add a AutoIncrement for already existing primary key field in this table.Please I need the script to execute this query.Can anybody help?thank you Posted 12-Oct-11 22:39pm nourbt478 Add a Solution 4 solutions Top Rated Most Recent Rate this: Please Sign up or sign in to vote

  http://blog.sqlauthority.com/2013/05/30/sql-server-add-identity-column-to-table-based-on-order-of-another-column/
The reason, I like to call it interesting is though, I have provided answers to him, I believe there should be another better alternative to this problem. However, what will be the alternative solution to this question if the clustered index is already created on the table and there was no option to modify the same

Add a column, with a default value, to an existing table in SQL Server - Stack Overflow

  http://stackoverflow.com/questions/92082/add-a-column-with-a-default-value-to-an-existing-table-in-sql-server
A much more thorough SQL script to add a column with a default value is below including checking if the column exists before adding it also checkin the constraint and dropping it if there is one

tsql - How do I add the identity property to an existing column in SQL Server - Stack Overflow

  http://stackoverflow.com/questions/288222/how-do-i-add-the-identity-property-to-an-existing-column-in-sql-server
Create a new table as you desire it, load the records from your old table into your new talbe and let the database populate the identity column as normal

  http://sqlmag.com/t-sql/adding-identity-property-existing-column
ALTER TABLE attempt failed, this explaination came through perfectly, tatero Log In or Register to post comments Preeti (not verified) on May 13, 2004 This is a very systematic solution given to a problem ususlly faced while migrating from Oracle to SQL 2000. To demonstrate this T-SQL activity, run the code that Listing 1 shows to create and populate the Orders2 and OrderDetails2 tables in the Northwind database

  http://blog.sqlauthority.com/2009/05/03/sql-server-add-or-remove-identity-property-on-column/
But do you know what will be the solution when ID column is referenced as foreign key in other multiple tables? because in this case it wouldnt let me delete that old ID column. can i chaneg the order of columns in a table as i dont want to disturb the column sequence of my primary key column after using the above suggested methods