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Query using not in clause
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À
25/02/2004 12:13:51
Information générale
Forum:
Visual FoxPro
Catégorie:
Codage, syntaxe et commandes
Divers
Thread ID:
00880737
Message ID:
00880981
Vues:
15
Hi Gaylen,

You're welcome.


>Once again thanks Sergey
>
>
>
>>Try
SELECT DIST PolicyID FROM Policy ;
>>  WHERE PolicyDate <= {2003/12/31} AND PolicyID NOT IN ( ;
>>     SELECT DIST PolicyID FROM Policy ;
>>       WHERE PolicyDate > {2003/12/31})
>>
>>>I have a policy table with 2 years worth of data. Each record is either a year 2003 or 2004 record. I need to know which policy does not have a 2004 record. I remember seeing something about using two selects with a "Not IN ( select ......)" clause.
>>>
>>>I know I can create two table and scan one and check it against the other but I was looking for a SQL solution.
>>>
>>>Couldn't find anything in Help or Hacker's on this or didn't look in the right places.
>>>Thanks
>>>Gaylen
--sb--
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