Question

I am trying to set individual columns of a table variable iteratively as follows:

declare @reg_data table
(
    I int NOT NULL PRIMARY KEY IDENTITY,
    Y float
)

declare @counter int, @numRows int
SET @counter = 0
SET @numRows = (select MAX(val) + 10 from tableY)

WHILE @counter < numRows
BEGIN
    SET @reg_data.Y = dbo.func1(@counter)       --HOW DO I DO THIS!!!  
    @counter = @counter + 1
END

The above does not work because you cannot access table variables like an array. How can I obtain the following functionality?

Answer 1

You can’t set values in records that doesn’t exists, so you need an insert:

WHILE @counter < numRows
BEGIN
    INSERT INTO @reg_data (Y) values (dbo.func1(@counter))
    @counter = @counter + 1
END