如何在SQL Server 2005/2000中像数组一样创建？

Question

I know we can not create array in SQL Server. There are 25 different tables in my database. I want to add extra column to those tables. So I wanted to have an array so I can store my table name into. One by one I can access them and insert new column. In SQL Server there is no for loop, I can use while loop.

Answer 1

You can easily store your table names into a table variable and then also have a Done column in that table variable - something like:

DECLARE @AllMyTables TABLE (TableName VARCHAR(200), Done BIT)

and then insert your tables into that table variable:

INSERT INTO @AllMyTables(TableName, Done)
    SELECT name, 0
    FROM sys.tables

Now, you can easily fetch one table at a time and do something with it:

DECLARE @TableName VARCHAR(200)

SELECT TOP (1) @TableName = TableName FROM @AllMyTables WHERE Done = 0

and now add your column, update the Done column to indicate you're done, and on you go....