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Counting parent records in a 'one to many' relationship.
Message
De
10/11/1999 10:10:49
Raul Davila
Davila Programming Services
Toa Alta, Porto Rico
 
 
À
09/11/1999 12:18:09
Information générale
Forum:
Visual FoxPro
Catégorie:
Gestionnaire de rapports & Rapports
Divers
Thread ID:
00289027
Message ID:
00289568
Vues:
28
Hi:

RECCOUNT() won't work because it doesn't respect SET DELETED.
Using COUNT was my first choice but the table has over 150,000 records and the report is grouped on a field that could have at least 25 - 30 different values. Even after SELECTING filtered data into a cursor to work with a smaller set of data I still end up with about 100,000 records and more than 20 groups, so COUNT is no an option since it will take forever to count every time the group changes.


>Why not just use RECCOUNT('parent'), it is not affected by relations or skip? If that won't work for you just do a COUNT in parent before setting the relationship, store it in a variable and place the variable on your report.
>>Hi:
>>
>> Printing a report where I have two related tables with one to many
>> I'm having problems getting a total count of the parent table records.
>>
>> Example:
>> parent.dbf
>> field1 n(10)
>> child.dbf
>> field1 n(10)
>> field2 c(5)
>>
>> use parent order field1
>> use child in 0 order field1
>>
>> set relation to field1 into child
>> set skip to child
>>
>> DETAIL BAND
>> parent.field1 child.field2
>>
>> SUMMARY BAND
>> [the count of parent.field1]
>> [the count of child.field2]
>>
>> Because of the one to many relationship both totals are always the same.
>> If there is one record in parent for which there is 3 records in child
>> I'm supposed to get:
>>
>> Total of parent: 1
>> Total of child: 3
>>
>>but instead I get
>>
>> Total of parent: 3
>> Total of child: 3
>>
>>The count of parent.field1 increments while the pointer is moved in child.
>>I understand why this is happening, what I don't know is how to fix it.
>>
>>
>>TIA
R. Davila
DBA / Network Administrator
Administracion de Fomento Comercial
Gobierno de Puerto Rico

Still waiting for FoxPro for LINUX
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