Frequency Table by user in SQL

Posted by Roberto on Stack Overflow See other posts from Stack Overflow or by Roberto
Published on 2010-05-27T23:26:49Z Indexed on 2010/05/27 23:31 UTC
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sql

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mysql

Very basic SQL question (DB is MySQL):

I want a table of number of transactions by users.

User ID   Transaction count
1         43
2         213
3         0
4         23
5         0

In a table I have the two relevant records (user_id and buy_count).

How could I get the table I want?

Thanks,

Roberto

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