| From: | Stephan Szabo <sszabo(at)megazone23(dot)bigpanda(dot)com> |
|---|---|
| To: | Mikael Hedin <mikael(dot)hedin(at)irf(dot)se> |
| Cc: | pgsql-sql(at)postgresql(dot)org |
| Subject: | Re: problem to count (distinct number) |
| Date: | 2001-01-18 21:01:16 |
| Message-ID: | Pine.BSF.4.21.0101181258520.1294-100000@megazone23.bigpanda.com |
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| Thread: | |
| Lists: | pgsql-sql |
What version are you using? I believe this was added in 7.0.x, but
I could be wrong about that. A query of this sort works on my
7.1beta3 system.
On 17 Jan 2001, Mikael Hedin wrote:
> I have a table with a column (int4), and I want to know how many
> different numbers there are. In an example book I saw the query
>
> SELECT COUNT (DISTINCT data ) FROM media;
>
> by then I get
>
> ERROR: parser: parse error at or near "distinct"
>
> Is the query in error or does PostgreSQL not support this? How do I
> then get the number of distinct data from my table?
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