--retrieve column information... SELECT a.attnum, a.attname, t.typname, a.attlen,
a.atttypmod, a.attnotnull, a.atthasdef
FROM pg_class c, pg_attribute a, pg_type t
WHERE c.relname = 'comuni'
and a.attnum > 0
and a.attrelid = c.oid
and a.atttypid = t.oid
ORDER BY attnum ;
attnum|attname |typname|attlen|atttypmod|attnotnull|atthasdef
------+--------------+-------+------+---------+----------+---------
1|istat |bpchar | -1| 10|t |f
2|nome |bpchar | -1| 54|t |f
3|provincia |bpchar | -1| 6|f |f
4|codice_fiscale|bpchar | -1| 8|f |f
5|cap |bpchar | -1| 9|f |f
6|regione |bpchar | -1| 7|f |f
7|distretto |bpchar | -1| 8|f |f
(7 rows)
José
Chris Bitmead ha scritto:
What's the best way to do this in postgres? (basicly finding the type of
objects). I want to run a web site with different types of content - question and
answers, stories etc. I propose an object hierarchy...
webobject (title, body)
question inherits webobject
story (image) inherits (webobject).
The idea being you could have a search screen that searches questions
AND stories with the one SELECT query.
But then each result would have a link to examine the body of the search
result. But different types of objects would have different URLs to
display that content.
So basicly I need to know the type of objects returned.
I am loath to store the object type inside the object because it is
wasteful. PG obviously already knows the type of objects, the question
is how to get at that info.
