diff options
Diffstat (limited to 'src/backend/executor/nodeMaterial.c')
| -rw-r--r-- | src/backend/executor/nodeMaterial.c | 21 |
1 files changed, 10 insertions, 11 deletions
diff --git a/src/backend/executor/nodeMaterial.c b/src/backend/executor/nodeMaterial.c index 39968c65e0c..afd08e80945 100644 --- a/src/backend/executor/nodeMaterial.c +++ b/src/backend/executor/nodeMaterial.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/executor/nodeMaterial.c,v 1.42 2003/03/27 16:51:27 momjian Exp $ + * $Header: /cvsroot/pgsql/src/backend/executor/nodeMaterial.c,v 1.43 2003/08/04 00:43:18 momjian Exp $ * *------------------------------------------------------------------------- */ @@ -79,15 +79,15 @@ ExecMaterial(MaterialState *node) { /* * When reversing direction at tuplestore EOF, the first - * getheaptuple call will fetch the last-added tuple; but - * we want to return the one before that, if possible. - * So do an extra fetch. + * getheaptuple call will fetch the last-added tuple; but we + * want to return the one before that, if possible. So do an + * extra fetch. */ heapTuple = tuplestore_getheaptuple(tuplestorestate, forward, &should_free); if (heapTuple == NULL) - return NULL; /* the tuplestore must be empty */ + return NULL; /* the tuplestore must be empty */ if (should_free) heap_freetuple(heapTuple); } @@ -129,10 +129,11 @@ ExecMaterial(MaterialState *node) } heapTuple = outerslot->val; should_free = false; + /* * Append returned tuple to tuplestore, too. NOTE: because the - * tuplestore is certainly in EOF state, its read position will move - * forward over the added tuple. This is what we want. + * tuplestore is certainly in EOF state, its read position will + * move forward over the added tuple. This is what we want. */ tuplestore_puttuple(tuplestorestate, (void *) heapTuple); } @@ -293,8 +294,8 @@ ExecMaterialReScan(MaterialState *node, ExprContext *exprCtxt) * If subnode is to be rescanned then we forget previous stored * results; we have to re-read the subplan and re-store. * - * Otherwise we can just rewind and rescan the stored output. - * The state of the subnode does not change. + * Otherwise we can just rewind and rescan the stored output. The state + * of the subnode does not change. */ if (((PlanState *) node)->lefttree->chgParam != NULL) { @@ -303,7 +304,5 @@ ExecMaterialReScan(MaterialState *node, ExprContext *exprCtxt) node->eof_underlying = false; } else - { tuplestore_rescan((Tuplestorestate *) node->tuplestorestate); - } } |