[英]SQL group by not working in inner join
string sqlString =
"SELECT task.idtask, SUM(task.hours), task.overtime,
task.taskdate, task.description, developers.iddevelopers, developers.developerfname, projects.idprojects, projects.ProjectName" +
" FROM task" +
" INNER JOIN developers ON developers.iddevelopers = task.iddevelopers" +
" INNER JOIN projects ON projects.idprojects = task.idprojects"+
"GROUP BY projects.ProjectName ";
如何按ProjectName的分组顺序获取结果
您必须在select语句中包括“ EVERY”一栏,但不要加重。
GROUP BY projects.ProjectName,task.idtask,task.overtime,task.taskdate,task.description,developers.iddevelopers,developers.developerfname,projects.idprojects
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