Question

I have two temp tables like this:

declare @Tbl_A table
(
 Id int
)

declare @Tbl_b table
(
 Seat nchar(1)
)

Sample data:

Tbl_A     Tbl_B    

10         A        
11         B        
12         C        

I want to insert that data into a table Tbl_C according to first and second temp tables:

Tbl_C
(
  Id int,  
  Seat nchar(1)
)

Resulting data:

Id  Seat
10   A
10   B
10   C
11   A
11   B
11   C

How to do it?

Answer 1

You need to do a CROSS JOIN:

INSERT INTO Tbl_C
    SELECT Id, Seat FROM @Tbl_A CROSS JOIN @Tbl_B

SELECT * FROM Tbl_C ORDER BY Id, Seat