Re: how this can be done?

select type ||':', count(*) || ' people' from <table>
group by type;

Hope this helps.

Henry wrote:

> however, there could be no employ for a certain type at all.
>
> My boss wants an query that list all types with its number of employees.
> and the sql result will be like:
>
> type0 : 5 people
> type1 : 1 people
> type2 : 0 people
> ...
>
> how can i accomplish this?
> thanx a lot!

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Regards,

Praveen