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Diffstat (limited to 'src/sql/kernel/qsqlresult.cpp')
| -rw-r--r-- | src/sql/kernel/qsqlresult.cpp | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/sql/kernel/qsqlresult.cpp b/src/sql/kernel/qsqlresult.cpp index f79c1c71cd..cdb1379502 100644 --- a/src/sql/kernel/qsqlresult.cpp +++ b/src/sql/kernel/qsqlresult.cpp @@ -565,6 +565,14 @@ bool QSqlResult::isForwardOnly() const \note Calling setForwardOnly after execution of the query will result in unexpected results at best, and crashes at worst. + \note To make sure the forward-only query completed successfully, + the application should check lastError() for an error not only after + executing the query, but also after navigating the query results. + + \warning PostgreSQL: While navigating the query results in forward-only + mode, do not execute any other SQL command on the same database + connection. This will cause the query results to be lost. + \sa isForwardOnly(), fetchNext(), QSqlQuery::setForwardOnly() */ void QSqlResult::setForwardOnly(bool forward) @@ -1002,6 +1010,10 @@ bool QSqlResult::nextResult() \warning The handle can be NULL if the result was not executed yet. + \warning PostgreSQL: in forward-only mode, the handle of QSqlResult can change + after calling fetch(), fetchFirst(), fetchLast(), fetchNext(), fetchPrevious(), + nextResult(). + The handle returned here is database-dependent, you should query the type name of the variant before accessing it. |