Oracle - Count distict values of a column

Posted by Luciana Borela on Stack Overflow See other posts from Stack Overflow or by Luciana Borela
Published on 2010-06-09T13:02:29Z Indexed on 2010/06/09 13:12 UTC
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Hi I have this table:

Reason|Area_Code|Id
x         dig     1
x         dig     2
y         dig     3
h         util    4
x         dig     5

I'm trying a sql that returns:

Reason|Amount of distinct Reason|Area_code
x              3                  dig
y              1                  dig
h              1                  util

I will use this result to plot a chart. I don´t have any ideia on how this SQL can be. Could you help me?

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