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Vfp50 - Set Filter
Message
De
12/03/1997 10:09:15
 
 
À
12/03/1997 09:53:37
Information générale
Forum:
Visual FoxPro
Catégorie:
Autre
Divers
Thread ID:
00023736
Message ID:
00023887
Vues:
39
>>>>>>How would you do the same for a "where" clause?
>>>>>
>>>>>SET FILTER doesn't have 'where' clause.
>>>>
>>>>ok... Question - there are two ways to filter out records.
>>>>
>>>>1. select...into cursor, then use that cursor for you filter.
>>>>2. set filter on some records.
>>>>
>>>>I am picking the first way for now..my "where" clause is a string
>>>>I built from a user's "search criteria" off of a form. Now I want to fire off the select and get my new cursor with the records I want to display.
>>>>My questions is:
>>>>Will the "where" clause search for upper and/or lower case if I only specify in my "where" clause, the field content, which could be upper or lower? If so, how? If I am wrong about "1 and 2" let me know...
>>>
>>>Where clause could be the same: UPPER(last_name)="SMITH", but remember to have index tag on UPPER(last_name), else your SELECT is not optimizable.
>>
>>
>>Not sure what you mean by (else your SELECT is not optimizable)?? and
>>Do you use an index tag when using the SELECT SQL?
>
>Not me. Foxpro will use this tag internally.

Does the SELECT work better if you have a index?
Robert Keith
Independent Developer
San Antonio, Texas
E-mail address:
rebelrob1@yahoo.com
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