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How do I index
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06/07/1999 23:33:09
 
 
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Forum:
Visual FoxPro
Catégorie:
Base de données, Tables, Vues, Index et syntaxe SQL
Titre:
How do I index
Divers
Thread ID:
00238097
Message ID:
00238097
Vues:
51
I have a table with fields including a date field, a character field and a logical field that stores the deleted status of the record - .T. = current, .F. = Deleted.
id = N(10)
Char = Name C(30)
Date = Birth date D(8)
Active = L(1)
among other fields

When changes are made to a record a new record is created with the changes, Active = .T. and the active = .f. for the old record. Thus we have an audit trail of changes.

How do I create an index on the character field so as to SEEK only those that are active.

I use Locate for name = "MYNAME" and ACTIVE = .T. but this is too slow. I need SEEK so how do I create an index for this??

Set filter to ACTIVE = .T. is also too slow. There are > 250000 records (including the non active ones)

I need to

Set ORDER to TAG myindextag
and
SEEK "MYNAME" which will give me an active record.

Bernard
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