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DB2:field in column name

Posted on 2011-05-05
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Last Modified: 2012-05-11
How to have a cross fields table in db2 sql?
I have a table with 3 field: code, week, value.
I want to have starting from this table a second table
with fields: code, week(n), week(n+1).... , week(m)
and in field week I want to put field value of the first table.
A cross fields table.
How to do it?
thanks
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Question by:bobdylan75
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by:Kent Olsen
Kent Olsen earned 2000 total points
ID: 35697825

Hi Bob,

DB2 doesn't have a cross-tab function like SQL Server does so you'll have to "roll your own" on this.  That is, if you really need it at all.

You can quite easily just write SQL to put as few or as many columns as you want on the result.

If you can explain what you're trying to do a bit more perhaps we can work out the SQL.


Kent
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bobdylan75 earned 0 total points
ID: 35698580
Infact, but with the "case wehn then else end" statment I can do what I need...
in the link below you can say an example,
http://www.simple-talk.com/sql/t-sql-programming/creating-cross-tab-queries-and-pivot-tables-in-sql/
thanks
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Expert Comment

by:abbas_najafizadeh
ID: 35715510
select *
from
table1 inner join table2
on table1.code=table2.code
and table1.week= (case table1.value when 1 then table2.week1
when 2 then table2.week2
when 3 then table2.week3
when 4 then table2.week4
end)
;

be success

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Author Closing Comment

by:bobdylan75
ID: 35726847
thanks
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