Question

Possible Duplicate:
dynamic sql pivot in sql server

I have a table called Col_values and Col_ID is an Identity field the data looks like:

Val_ID       Col_ID       Value
76951792     3            Closed
76951791     3            Closed
76951790     25           Open
76951789     25           Closed
76951792     1            US
76951791     1            Canada

and another table called Et_Col and the data looks like:

Col_ID   Col_Name   D_ID
3        Status     1
25       Status     2
1        Country    1

I want the output as:

Val_ID       Status    Country
76951792    Closed     US
76951791    Closed     Canada
76951790    Open       Null
76951789    Closed     Null

So I wrote a cursor to get the output and the cursor returns the statement like:

  Select val_ID
    ,max(case when Col_ID = 3 then Value end) as Status
    ,max(case when Col_ID = 25 then Value end) as Status
   ,max(CASE WHEN Col_ID = 1 THEN VALUE END ) AS Country
    From Col_values
    Group by Val_ID

this gives me output as:

Val_ID    Status    Status    Country
76951792  Closed    Null      US
76951791  Closed    Null      Canada
76951789  Null      Closed    Null
76951790  Null      Open      Null

How can I fix This?

Answer 1

It should be possible to change your cursor so that it generates sql like this then:

select 
    val_id
    ,max(case when Col_name = 'Status' then Value end) as Status
    ,max(case when Col_name = 'Country' then Value end) as Country
from
    col_values v
    join ET_Col c on v.col_id=c.col_id

group by val_id

The different is that you are using the col_name to split between columns instead of the col_id, so the doubled up column names will merge.