sql - MySQL GROUP BY…exclude values in other field -


i have problem mysql query statistic-page. want use query similar following retrieve rows "version" want exclude values in other field "platform" if not same value.

example values:

| platform | version | ... ---------------------- | windows  | 1.0.1   | | windows  | 1.0.1   | | windows  | 1.0.1   | | windows  | 1.0.2   | | windows  | 1.0.3   | | linux    | 1.0.1   | | linux    | 1.0.1   | | linux    | 1.0.2   | | mac      | 1.0.1   | | mac      | 1.0.1   |

query:

select     platform,     version,     count(*) count     user group     version

result:

| platform | version | count | ------------------------------ | windows  | 1.0.1   | 7     | | windows  | 1.0.2   | 2     | | windows  | 1.0.3   | 1     |

i need following result:

| platform | version | count | ------------------------------ | windows  | 1.0.1   | 3     | | windows  | 1.0.2   | 1     | | windows  | 1.0.3   | 1     | | linux    | 1.0.1   | 2     | | linux    | 1.0.2   | 1     | | mac      | 1.0.1   | 2     |

i hope can me... , sorry english.

i think need right group by clause:

select platform, version, count(*) count user group platform, version;

your query not syntactically correct sql. column platform in select not in group by. database other mysql correctly return error.


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