Fixes: QOCI setForwardOnly(true) accumulating values.

readPiecewise() is assuming an empty valueCache when reading a new row.
setForwardOnly(true) means that only one row is used/re-used. The value
cache wasn't being cleared out when moving to a new row, so the above
assumption was invalid.

Task-number: QTBUG-6421
Reviewed-by: Justin McPherson

1 files changed, 5 insertions, 0 deletions

diff --git a/src/sql/kernel/qsqlcachedresult.cpp b/src/sql/kernel/qsqlcachedresult.cpp
index b4a9241..2e4d19e 100644
--- a/src/sql/kernel/qsqlcachedresult.cpp
+++ b/src/sql/kernel/qsqlcachedresult.cpp
@@ -278,6 +278,11 @@ bool QSqlCachedResult::cacheNext()
     if (d->atEnd)
         return false;
 
+    if(isForwardOnly()) {
+        d->cache.clear();
+        d->cache.resize(d->colCount);
+    }
+
     if (!gotoNext(d->cache, d->nextIndex())) {
         d->revertLast();
         d->atEnd = true;