T-SQL While Loop

declare @Part_Id int
declare @Category_Id int
declare @Desc varchar(50)
create table PART (Part_Id int, Category_Id int, Description varchar(50))
set @Part_Id = 0
set @Category_Id = 0
while @Part_Id < 2
begin
set @Part_Id = @Part_Id + 1
while @Category_Id < 3
begin
set @Category_Id = @Category_Id + 1
set @Desc = 'Part_Id is ' + cast(@Part_Id as char(1)) +
' Category_Id ' + cast(@Category_Id as char(1))
insert into PART values(@Part_Id,
@Category_Id,
@Desc )
end
set @Category_Id = 0
end
select * from PART
drop table PART
Here is the output from the SELECT statement at the bottom of this nested WHILE loop example.

Part_Id Category_Id Description
----------- ----------- -----------------------------------------
1 1 Part_Id is 1 Category_Id 1
1 2 Part_Id is 1 Category_Id 2
1 3 Part_Id is 1 Category_Id 3
2 1 Part_Id is 2 Category_Id 1
2 2 Part_Id is 2 Category_Id 2
2 3 Part_Id is 2 Category_Id 3