Re: [GENERAL] Any ideas why this doesn't work or how to rewrite it? - Mailing list pgsql-general

> This seems like a simple SQL command, but I'm getting errors.
> Running 6.5.0 under RedHat 5.2:
>
> db=> select count(distinct customer_username) from customerdata;
> ERROR:  parser: parse error at or near "distinct"
>
> How do you get a count of distinct data output via postgres?

SELECT customer_username, COUNT(customer_username) FROM customerdata GROUP BY customer_username;