sql - MSSQL - Grouping Results using MAX() -

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i have dataset;

did num  11 3 11 4 11 5 13 9 13 11 45 3 45 8 99 44 99 78 99 53

i want this.

did num  11 5 13 11 45 8 99 78

list id's , show id's 'num' largest number group of id's

my attempt here doesnt quite work out. http://sqlfiddle.com/#!9/1a47f/1

you right, grouped wrong column:

select did,        max(num) data group did

see here: http://sqlfiddle.com/#!9/1a47f/3


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