sql server - SQL count number of groups -


i have table pallets, items, item quantity:

pallet | item | qty -------------------   1        1     2   1        2     4   2        3     2   2        5     3   3        4     4

i need find count(pallet), count(item), sum(qty)

count(pallets) | count(items) | sum(qty) ----------------------------------------       3                5           15

i can sum(qty) , count(item) 

select count(0) totalitems, sum(qty) total table

is there way number of pallets without sub-query?

yes, use distinct

select count(distinct pallet) pallets,        sum(qty) total,         count(0) totalitems  your_table

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