Users have a list with items in different categories. I want to know how many items a user has in each category.
User | item | category ____________________________ Bill | car | new Bill | truck | used Bill | boat | new Bill | house | old Sue | car | used Sue | truck | used Bill | bike | new Sue | viola | used
I'd like the results
User category __________________________ Bill| new | 3 Bill| used | 1 Bill| sold | 1
I've tried
$SQL = "SELECT COUNT(DISTINCT CATEGORY) FROM LIST WHERE USER=Bill";
but it doesn't get me very far.
Thanks
You need to use group by
statement:
select user, category, count(distinct item)
from mytable
where user = 'Bill'
group by user, category
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