In this article we'll see how to use the Temporary tables and what are the necessary steps to be taken while using them and moreover sometimes it's required to add a column in Temporary tables dynamically
Alter Table Drop Column
Name: Email: Comment: Home Tuning Services Featured Articles How to cache stored procedure results using a hash key There are a lot of different design patterns that lend themselves to creating SQL Server Database Optimization Guide In the troubleshooting guide we went over the different physical bottlenecks that can Yet Another Temp Tables Vs Table Variables Article The debate whether to use temp tables or table variables is an old Using Union Instead of OR Sometimes slow queries can be rectified by changing the query around a bit. We obfuscate data as it is moved to another environment and rather than updating the data it was actually much quicker to drop the column and add it back along with a default value
SQL Drop Column - ALTER TABLE DROP COLUMN failed because one or more objects access this column
There are obviously many ways to accomplish that, including elaborate UPDATE queries with anywhere from one to numerous REPLACE functions (even within REPLACE functions). Answer: Hi esak2000; In order to do what you want you will need to create a new DataTable object with all the columns you wish to include from the two original DataTable's
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
ALTER TABLE only allows columns to be added that can contain nulls, or have a DEFAULT definition specified, or the column being added is an identity or timestamp column, or alternatively if none of the previous conditions are satisfied the table must be empty to allow addition of this column. Fill in your details below or click an icon to log in: Email (required) (Address never made public) Name (required) Website You are commenting using your WordPress.com account
SQL Server Forums - Alter table - Add new column in between..
Make sure you run it in pieces.Here is the code: USE Northwind GO PRINT 'This script attempts to reorder a column by updating the system tables themselves. For any column, it is the number of columns in that table with colid's not greater than its own colid.I use similar logic all the time to calculate rankings, with the rank of a given record being 1 + the number of higher-valued records
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
sql server 2008 - Alter table column for primary key and identity - Stack Overflow
You have to create a new column with the IDENTITY property: ALTER TABLE MyTable ADD NewID int IDENTITY(1,1) not null Unfortunately, you're not then able to assign the old ID values to this new column
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