I want to implement following below, but don't know where to start:
I have the following output from SQL query:
LocationID ItemID ItemName Price1 Price2
---------------------------------------------------------
1 101 A 100 150
1 102 B 220 170
2 103 C 120 155
2 104 D 123 160
3 105 E 158 179
3 106 F 160 180
Now I want to make my output to look like this:
LocationID 1 LocationID 2
ItemID ItemName Price1 Price2 Price1 Price2
---------------------------------------------------------
101 A 100 150 0 0
102 B 220 170 0 0
103 C 0 0 120 155
104 D 0 0 123 160
105 E 0 0 0 0
106 F 0 0 0 0
How can I do the same in SQL, appreciate if someone can guide me.
P.S ItemID & ItemName are coming from one master table joined with LocationID.
答案 0 :(得分：0)
Like I said...conditional aggregation.
if OBJECT_ID('tempdb..#Something') is not null
drop table #Something
CREATE TABLE #Something
(
LocationID int
, ItemID int
, ItemName char(1)
, Price1 int
, Price2 int
)
insert #Something
select 1, 101, 'A', 100, 150 union all
select 1, 102, 'B', 220, 170 union all
select 2, 103, 'C', 120, 155 union all
select 2, 104, 'D', 123, 160 union all
select 3, 105, 'E', 158, 179 union all
select 3, 106, 'F', 160, 180;
select LocationID
, ItemName
, Location1_Price1 = MAX(case when LocationID = 1 then Price1 else 0 end)
, Location1_Price2 = MAX(case when LocationID = 1 then Price2 else 0 end)
, Location2_Price1 = MAX(case when LocationID = 2 then Price1 else 0 end)
, Location2_Price2 = MAX(case when LocationID = 2 then Price2 else 0 end)
from #Something
group by LocationID
, ItemName