Question

I’m trying to write a stored procedure in SQL that will :

Make a select query from table1 that will return multiple values
Insert new values in table2 (1 new record in table2 for each record returned by the select on table1).

I would use a foreach in C# but I know that SQL doesn’t work that way. What’s the correct way of doing this?

Thanks!

Answer 1

INSERT INTO tabl2 (name, id)
   SELECT name, id FROM table1

EDIT

I should add, that loops can indeed be very useful in SQL, so you may want to know how to do that as well. Here’s one example:

DECLARE @temp TABLE (ix int identity(1,1), id int, name varchar(100))

INSERT INTO @temp SELECT id, name FROM table1

DECLARE @i int, @max int

SELECT
   @i = 0
   @max = MAX(ix)
FROM
   @temp

WHILE @i < @max
BEGIN
   SET @i = @i + 1

   -- LOGIC HERE...

END