what is going on a QSqlQuery?

[mismael85]

hello every body,
i have a problem with QSqlQuery
i built a query easy and i went to the first record by using

query->next()

query->next()

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until now every thing works fine later in the program i used

query->seek(id)

query->seek(id)

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the query went to the record i want because i investigate that by trying

query->at()

query->at()

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i found it on the roght record but when i try to get the text from the record no thing return

query->value(0).toString()

query->value(0).toString()

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but, but
when i used

query->last()

query->last()

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before

query->seek(id)

query->seek(id)

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every thing works fine
i want to know why?
and thank you

[mcosta]

Some database doesn't know the query size QSqlDriver::hasFeature()
In this case before to use QSqlQuery::seek() or QSqlQuery::size() you have to go to the last record.

[cyberboy]

Try query.value(0).toString()