diff options
Diffstat (limited to 'src')
-rw-r--r-- | src/sql/kernel/qsqlquery.cpp | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/src/sql/kernel/qsqlquery.cpp b/src/sql/kernel/qsqlquery.cpp index 661a582afe..e5f4c5fc56 100644 --- a/src/sql/kernel/qsqlquery.cpp +++ b/src/sql/kernel/qsqlquery.cpp @@ -309,19 +309,20 @@ QSqlQuery& QSqlQuery::operator=(const QSqlQuery& other) } /*! - Returns \c true if the query is \l{isActive()}{active} and positioned - on a valid record and the \a field is NULL; otherwise returns - false. Note that for some drivers, isNull() will not return accurate - information until after an attempt is made to retrieve data. + Returns \c true if the query is not \l{isActive()}{active}, + the query is not positioned on a valid record, + there is no such field, or the field is null; otherwise \c false. + Note that for some drivers, isNull() will not return accurate + information until after an attempt is made to retrieve data. - \sa isActive(), isValid(), value() + \sa isActive(), isValid(), value() */ bool QSqlQuery::isNull(int field) const { - if (d->sqlResult->isActive() && d->sqlResult->isValid()) - return d->sqlResult->isNull(field); - return true; + return !d->sqlResult->isActive() + || !d->sqlResult->isValid() + || d->sqlResult->isNull(field); } /*! |