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 create new table with input of two tables		  New Topic  Reply to Topic
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gagani
Yak Posting Veteran

88 Posts
Posted - 06/20/2012 :  08:55:47  Show Profile  Reply with Quote
table1:

orderid product1 product2 product3 product4
100 1 1 1 1
102 1 2 2 4
103 4 1 4 3

product

product product_id
product1 1
product2 2
product3 3

I have to create a new table which should
join table1 and product and the output should
look like this:

orderid product_id quantity
100 1 1
100 2 1
100 3 1
100 4 1
102 1 1
102 2 2
102 3 2
102 4 4
103 1 4
103 2 1
103 3 4
103 4 3

nigelrivett
Flowing Fount of Yak Knowledge

United Kingdom
3328 Posts
Posted - 06/20/2012 :  09:03:53  Show Profile  Visit nigelrivett's Homepage  Reply with Quote
select a.orderid, b.product_id, a.q
from
(
select orderid, type = 'product1', q = product1 from table1
union all
select orderid, type = 'product2', q = product2 from table1
union all
select orderid, type = 'product3', q = product3 from table1
union all
select orderid, type = 'product4', q = product4 from table1
) a
join product b
on a.type = b.product

==========================================
Cursors are useful if you don't know sql.
SSIS can be used in a similar way.
Beer is not cold and it isn't fizzy.
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visakh16
Very Important crosS Applying yaK Herder

India
48076 Posts
Posted - 06/20/2012 :  20:07:23  Show Profile  Reply with Quote
or use unpivot


SELECT m.orderid,n.product_id,m.quantity 
FROM
(
SELECT orderid, product,quantity 
FROM table1
UNPIVOT (quantity FOR product IN (product1,product2,product3,product4))u
)m
INNER JOIN product n
on n.product = m.product


------------------------------------------------------------------------------------------------------
SQL Server MVP
http://visakhm.blogspot.com/
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