Richard Huxton wrote:
On Thursday 07 Nov 2002 11:47 am, Christoph Haller wrote:

Regarding to Terry's request on multiple aggregates and
Shahbaz's request for generating a cross tab ( pivot table )
in September, I've found an excellent example on a german inet page
http://www.itrain.de/
I've translated it and think it's useful for many who subscribed
(I hope so, maybe it was told before, but I couldn't find
anything about this topic in the techdecs).
Very useful. Also note there are some examples of how to produce crosstab results in the table-functions contrib directory in 7.3

Just to amplify a bit, in contrib/tablefunc there is a family of functions called crosstabN(), where N is 2, 3 and 4. These are meant as examples -- you could, for example, create a function crosstab5() if you need it. There is also a function called crosstab(), which returns type RECORD and thus requires the column definition to be specified in the query. See contrib/tablefunc/README.tablefunc for more details and examples.

These were done as relatively crude examples and therefore have some limitations which may or may not be a problem for you. If people find the functions useful and provide suggestions for improvement in functionality I'll try to upgrade them for 7.4.

Thanks,

Joe


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