diff options
Diffstat (limited to 'src/backend/executor/nodeAppend.c')
| -rw-r--r-- | src/backend/executor/nodeAppend.c | 51 |
1 files changed, 24 insertions, 27 deletions
diff --git a/src/backend/executor/nodeAppend.c b/src/backend/executor/nodeAppend.c index b88eec46a40..fc5c445db0e 100644 --- a/src/backend/executor/nodeAppend.c +++ b/src/backend/executor/nodeAppend.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/executor/nodeAppend.c,v 1.64 2005/05/22 22:30:19 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/executor/nodeAppend.c,v 1.65 2005/10/15 02:49:17 momjian Exp $ * *------------------------------------------------------------------------- */ @@ -88,10 +88,9 @@ exec_append_initialize_next(AppendState *appendstate) if (whichplan < appendstate->as_firstplan) { /* - * if scanning in reverse, we start at the last scan in the list - * and then proceed back to the first.. in any case we inform - * ExecAppend that we are at the end of the line by returning - * FALSE + * if scanning in reverse, we start at the last scan in the list and + * then proceed back to the first.. in any case we inform ExecAppend + * that we are at the end of the line by returning FALSE */ appendstate->as_whichplan = appendstate->as_firstplan; return FALSE; @@ -99,8 +98,7 @@ exec_append_initialize_next(AppendState *appendstate) else if (whichplan > appendstate->as_lastplan) { /* - * as above, end the scan if we go beyond the last scan in our - * list.. + * as above, end the scan if we go beyond the last scan in our list.. */ appendstate->as_whichplan = appendstate->as_lastplan; return FALSE; @@ -110,8 +108,8 @@ exec_append_initialize_next(AppendState *appendstate) /* * initialize the scan * - * If we are controlling the target relation, select the proper - * active ResultRelInfo and junk filter for this target. + * If we are controlling the target relation, select the proper active + * ResultRelInfo and junk filter for this target. */ if (((Append *) appendstate->ps.plan)->isTarget) { @@ -168,9 +166,8 @@ ExecInitAppend(Append *node, EState *estate) appendstate->as_nplans = nplans; /* - * Do we want to scan just one subplan? (Special case for - * EvalPlanQual) XXX pretty dirty way of determining that this case - * applies ... + * Do we want to scan just one subplan? (Special case for EvalPlanQual) + * XXX pretty dirty way of determining that this case applies ... */ if (node->isTarget && estate->es_evTuple != NULL) { @@ -199,8 +196,8 @@ ExecInitAppend(Append *node, EState *estate) #define APPEND_NSLOTS 1 /* - * append nodes still have Result slots, which hold pointers to - * tuples, so we have to initialize them. + * append nodes still have Result slots, which hold pointers to tuples, so + * we have to initialize them. */ ExecInitResultTupleSlot(estate, &appendstate->ps); @@ -220,10 +217,10 @@ ExecInitAppend(Append *node, EState *estate) } /* - * Initialize tuple type. (Note: in an inherited UPDATE situation, - * the tuple type computed here corresponds to the parent table, which - * is really a lie since tuples returned from child subplans will not - * all look the same.) + * Initialize tuple type. (Note: in an inherited UPDATE situation, the + * tuple type computed here corresponds to the parent table, which is + * really a lie since tuples returned from child subplans will not all + * look the same.) */ ExecAssignResultTypeFromTL(&appendstate->ps); appendstate->ps.ps_ProjInfo = NULL; @@ -275,19 +272,19 @@ ExecAppend(AppendState *node) if (!TupIsNull(result)) { /* - * If the subplan gave us something then return it as-is. - * We do NOT make use of the result slot that was set up in - * ExecInitAppend, first because there's no reason to and - * second because it may have the wrong tuple descriptor in + * If the subplan gave us something then return it as-is. We do + * NOT make use of the result slot that was set up in + * ExecInitAppend, first because there's no reason to and second + * because it may have the wrong tuple descriptor in * inherited-UPDATE cases. */ return result; } /* - * Go on to the "next" subplan in the appropriate direction. - * If no more subplans, return the empty slot set up for us - * by ExecInitAppend. + * Go on to the "next" subplan in the appropriate direction. If no + * more subplans, return the empty slot set up for us by + * ExecInitAppend. */ if (ScanDirectionIsForward(node->ps.state->es_direction)) node->as_whichplan++; @@ -348,8 +345,8 @@ ExecReScanAppend(AppendState *node, ExprContext *exprCtxt) UpdateChangedParamSet(subnode, node->ps.chgParam); /* - * if chgParam of subnode is not null then plan will be re-scanned - * by first ExecProcNode. + * if chgParam of subnode is not null then plan will be re-scanned by + * first ExecProcNode. */ if (subnode->chgParam == NULL) { |