Frank, I have fix bug in indexes!
Olivier
vidal_olivier at yahoo.fr
Fri Jan 28 06:32:18 CST 2005
Hi Ruslan and list,
> Oliver with report on wrong BinaryLink results
>
There is always a problem.
First, I had difficulties to reproduce the problem with b38.
But I isolated the problem and it reproduces with b39.
I send you (to ruslan) thus a small project where always reproduces the
problem.
We thus have two tables :
ZipCity table
Street table
Both tables are linked by a binary link:
LinkCityStreet=new vbinaryLink (" linkCityStreet ", zipCity, street,
EVLinkType.kOne, EvLinkType.kmany)
- > launch the project
- > click on " create DB ": WAIT for some minutes which the DB builds
up itself:
40 002 citys create
100 000 streets create
For i=1 to 30000
Base.linkCityStreet.linkRecords (array (1, i)) // 30 000 streets
linked with the city "1" which along Zipcode = '75000'
Next i
For i=30001 to 30002
Base.linkCityStreet.linkRecords (array (2, i)) // 2 streets linked
with the city "2" which along Zipcode ALSO = '75000'
Next i
- > click " SQL Start ":
Cur=new vcursor (base, " SELECT * FROM zipcity join street we
linkcitystreet where zipcode = '75000' ", evCursorLocation.kServerSide,
evLockType.kReadOnly, evCursorDirection.kRandom)
- > result: 30 002 found records, OK ! TRUE
- > quit the project
- > restart the project
- > click on " OPEN DB " (NOT "create DB", click "Open DB" button)
- > click " SQL Start "
- > result: only 2 records found! FALSE
- > click again one " SQL Start "
- > result: 30 002 founds records! TRUE
Thus, in the first opening of the DB, on the first SQL query, the
result is false.
NOW, quit app, and in "PushButton2.action" (" create DB " button), you
change the following lines:
For i=1 to 30000
Base.linkCityStreet.linkRecords (array (1, i))
Next i
For i=30001 to 30002
Base.linkCityStreet.linkRecords (array (2, i))
Next i
BY
For i=1 to 30000
Base.linkCityStreet.linkRecords (array (2, i)) // 30 000 records
are linked NOW to city 2
Next i
For i=30001 to 30002
Base.linkCityStreet.linkRecords (array (1, i)) // this 2 records
are linked NOW to city 1
Next i
There, there are not problems anymore!
Olivier
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