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POMySQL sum of sub queries
 

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    <p>I have quite a long query that is causing me some problems. For the first sub-query I keep getting the error: "MySQL server version for the right syntax to use near 'SELECT project.project_total_num_hours_quoted FROM project inner join time_recor' at line 5".</p> <p>The subquery in question is:</p> <pre><code>sum(SELECT project.project_total_num_hours_quoted FROM project inner join time_recording using(project_id) WHERE project.company_id = company.company_id AND project_is_retainer != 1 AND time_recording.time_recording_event_start_datetime &gt;= '2011-01-01' AND time_recording.time_recording_event_stop_datetime &lt;= '2011-03-01' group by project_id ) AS hours_quoted, </code></pre> <p>This returns a set of results. In the larger query I simply want to have the sum.</p> <pre><code>SELECT SUM((unix_timestamp(time_recording.time_recording_event_stop_datetime)-unix_timestamp(time_recording.time_recording_event_start_datetime))/3600) AS total_time, company.company_label, sum(SELECT project.project_total_num_hours_quoted FROM project inner join time_recording using(project_id) WHERE project.company_id = company.company_id AND project_is_retainer != 1 AND time_recording.time_recording_event_start_datetime &gt;= '2011-01-01' AND time_recording.time_recording_event_stop_datetime &lt;= '2011-03-01' group by project_id ) AS hours_quoted, (SELECT SUM(project.project_total_num_hours_quoted) FROM project INNER JOIN time_recording ON project.project_id = time_recording.project_id WHERE time_recording.time_recording_event_start_datetime&gt;='2011-01-01' AND project_is_retainer!=1 AND time_recording.time_recording_event_stop_datetime&lt;='2011-03-01' AND project.company_id!=1 ) AS total_hours_quoted, ( SELECT SUM((unix_timestamp(time_recording.time_recording_event_stop_datetime)-unix_timestamp(time_recording.time_recording_event_start_datetime))/3600) FROM time_recording INNER JOIN project ON time_recording.project_id = project.project_id WHERE project.company_id!=1 AND project_is_retainer!=1 AND time_recording.time_recording_event_start_datetime&gt;='2011-01-01' AND time_recording.time_recording_event_stop_datetime&lt;='2011-03-01' ) AS total_hours FROM time_recording INNER JOIN project ON time_recording.project_id = project.project_id INNER JOIN company ON project.company_id = company.company_id WHERE company.company_id!=1 AND project_is_retainer!=1 AND time_recording.time_recording_event_start_datetime&gt;='2011-01-01' AND time_recording.time_recording_event_stop_datetime&lt;='2011-03-01' GROUP BY company.company_id ORDER BY total_time desc LIMIT 7 </code></pre>
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