diff options
Diffstat (limited to 'src/backend/executor/nodeSort.c')
| -rw-r--r-- | src/backend/executor/nodeSort.c | 29 |
1 files changed, 26 insertions, 3 deletions
diff --git a/src/backend/executor/nodeSort.c b/src/backend/executor/nodeSort.c index e570a9dda3f..77d43f928a9 100644 --- a/src/backend/executor/nodeSort.c +++ b/src/backend/executor/nodeSort.c @@ -7,7 +7,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/executor/nodeSort.c,v 1.12 1998/01/07 21:02:56 momjian Exp $ + * $Header: /cvsroot/pgsql/src/backend/executor/nodeSort.c,v 1.13 1998/02/23 06:26:56 vadim Exp $ * *------------------------------------------------------------------------- */ @@ -183,8 +183,6 @@ ExecSort(Sort *node) else { slot = (TupleTableSlot *) sortstate->csstate.cstate.cs_ResultTupleSlot; - /* *** get_cs_ResultTupleSlot((CommonState) sortstate); */ -/* slot = sortstate->csstate.css_ScanTupleSlot; orig */ } SO1_printf("ExecSort: %s\n", @@ -390,3 +388,28 @@ ExecSortRestrPos(Sort *node) */ psort_restorepos(node); } + +void +ExecReScanSort(Sort *node, ExprContext *exprCtxt, Plan *parent) +{ + SortState *sortstate = node->sortstate; + + /* + * If we haven't sorted yet, just return. If outerplan' + * chgParam is not NULL then it will be re-scanned by + * ExecProcNode, else - no reason to re-scan it at all. + */ + if (sortstate->sort_Flag == false) + return; + + ExecClearTuple(sortstate->csstate.cstate.cs_ResultTupleSlot); + + psort_rescan (node); + + /* + * If subnode is to be rescanned then we aren't sorted + */ + if (((Plan*) node)->lefttree->chgParam != NULL) + sortstate->sort_Flag = false; + +} |