I've got following question:
I've got three tables:
TABLE t_project (id, name,dossier_id, PRIMARY KEY(id))
TABLE t_subproject (id, name,project_id, PRIMARY KEY(id))
TABLE t_time (id, minutes, subproject_id,PRIMARY KEY(id))
Now I want to dp a SELECT which has following effect:
Projectname =A6 minutes testname =A6 300
In this example testname should be a value of the column name from the table t_project. '300' should be the SUM of all 'minutes' (from t_time) which have the the 'subproject_id' of subprojects which have the 'project_id' of the project'name': 'testname'
I tried following query:
SELECT p.name, SUM( z.minutes ) FROM ( ( t_zeit z INNER JOIN t_subproject sp ON sp.id =3D z.subproject_id ) INNER JOIN t_project p ON=
sp.project_id =3D p.id ) GROUP BY p.name
But it has not the efeect I want...
What is wrong?
I hope you understood my problem (sorry for the bad English) and can send me your suggestions....
Thanks in advance
Sorin Marti
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