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Outer join syntax?
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À
19/10/2001 16:13:58
Keith Payne
Technical Marketing Solutions
Floride, États-Unis
Information générale
Forum:
Visual FoxPro
Catégorie:
Base de données, Tables, Vues, Index et syntaxe SQL
Divers
Thread ID:
00571093
Message ID:
00571136
Vues:
25
Thanks Keith it works great.

>>I have two queries that get the number of defects for a set of tasks/subtasks
>>
>>This one selects the completed tasks for 2000 and 2001
>>
>>
>>select task.task_num, subtask.stsubtask ;
>>  from task, subtask ;
>>  where task.task_num = subtask.sttask and ;
>>        task.tstatus = "C" and ;
>>        task.task_num > "20000000" ;
>>  order by task_num, stsubtask ;
>>   into cursor temp1	
>>
>>
>>This one counts the defects
>>
>>
>>select temp1.task_num, temp1.stsubtask, count(defect.defect_num) as defect_cnt ;
>>  from temp1 left outer join defect ;
>>    on temp1.task_num = defect.task and ;
>>       temp1.stsubtask = defect.subtask ;
>> order by task_num, stsubtask ;
>> group by task_num, stsubtask ;
>>  into cursor temp2	
>>
>>
>>Is there a way to combine them into one query?
>>
>>Thanks.
>
>
>select task.task_num, subtask.stsubtask, ;
>	sum(iif(isnull(defect.defect_num),0,1)) as defect_cnt ;
>	from task inner join subtask on subtask.sttask = task.task_num ;
>		left join defect on defect.task = task.task_num ;
>			and defect.subtask = subtask.stsubtask ;
>	where task.tstatus = "C" ;
>		and task.task_num > "20000000" ;
>	order by task.task_num, subtask.stsubtask ;
>	group by task.task_num, subtask.stsubtask ;
>	into cursor temp2
>
>
>- Keith
Dennis Lindeman
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