crosstab function - pivot - use column value as column description

On Tue, Jan 12, 2010 at 3:27 PM, Daniel Schuchardt
<d.schuchardt@prodat-sql.de> wrote:

Hy,

i'm looking for a solution to get this table dynamicaly in that resultset:

SELECT r_dbrid, r_kategorie AS column_name, r_descr AS value FROM
recnokeyword WHERE r_dbrid=X
 r_dbrid  | r_kategorie |  r_descr
----------+-------------+------------
 14725737 |material | Alu Sorte1
 14725737 |farbe | Blau
 14725737 |gewicht | 100 kg

---->

material | farbe | gewicht
----------+-------------+------------
alu sorte 1|blau | 100kg

----> the number of columns depends on data.

is there is a simple solution for that?

have you ruled out the appropriate contrib module?

http://www.postgresql.org/docs/8.4/static/tablefunc.html

merlin

See bottom.

Am 12.01.2010 22:00, schrieb Merlin Moncure:

On Tue, Jan 12, 2010 at 3:27 PM, Daniel Schuchardt
<d.schuchardt@prodat-sql.de> wrote:

Hy,

i'm looking for a solution to get this table dynamicaly in that resultset:

SELECT r_dbrid, r_kategorie AS column_name, r_descr AS value FROM
recnokeyword WHERE r_dbrid=X
r_dbrid | r_kategorie | r_descr
----------+-------------+------------
14725737 |material | Alu Sorte1
14725737 |farbe | Blau
14725737 |gewicht | 100 kg

---->

material | farbe | gewicht
----------+-------------+------------
alu sorte 1|blau | 100kg

----> the number of columns depends on data.

is there is a simple solution for that?

have you ruled out the appropriate contrib module?

http://www.postgresql.org/docs/8.4/static/tablefunc.html

merlin

yes, but that function requires a return type -> so i has to know how
many columns. also the column description ist defined by data but by
return type.

(

SELECT * FROM crosstab('...', '...')
AS ct(row_name text, extra text, cat1 text, cat2 text, cat3 text, cat4 text);

This will produce a result something like:

<== value columns ==>
row_name extra cat1 cat2 cat3 cat4

)

Daniel
--

Daniel Schuchardt
/Softwareentwicklung/

/http://www.prodat-sql.de/

Hello

2010/1/12 Daniel Schuchardt <d.schuchardt@prodat-sql.de>:

Hy,

i'm looking for a solution to get this table dynamicaly in that resultset:

SELECT r_dbrid, r_kategorie AS column_name, r_descr AS value FROM
recnokeyword WHERE r_dbrid=X
 r_dbrid  | r_kategorie |  r_descr
----------+-------------+------------
 14725737 |material | Alu Sorte1
 14725737 |farbe | Blau
 14725737 |gewicht | 100 kg

---->

material | farbe | gewicht
----------+-------------+------------
alu sorte 1|blau | 100kg

----> the number of columns depends on data.

is there is a simple solution for that?
--

look on http://okbob.blogspot.com/2008_08_01_archive.html

Regards
Pavel Stehule

pardon,

correct link http://okbob.blogspot.com/2008/08/using-cursors-for-generating-cross.html

pavel

2010/1/13 Pavel Stehule <pavel.stehule@gmail.com>: