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select only the first row in a group

thread526-184281

select only the first row in a group

select only the first row in a group

(OP)
If I have data

a  1
a  2
a  3
b  3
b  2
c  1
c  2
d  2

I only want to select a, b, c, and d's first record.like
a  1
b  1
c  3
d  2

how do I do it
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