diff options
Diffstat (limited to 'src/backend/executor/nodeLimit.c')
| -rw-r--r-- | src/backend/executor/nodeLimit.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/src/backend/executor/nodeLimit.c b/src/backend/executor/nodeLimit.c index c7cc76f0a70..534c3a419d1 100644 --- a/src/backend/executor/nodeLimit.c +++ b/src/backend/executor/nodeLimit.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/executor/nodeLimit.c,v 1.3 2001/01/24 19:42:55 momjian Exp $ + * $Header: /cvsroot/pgsql/src/backend/executor/nodeLimit.c,v 1.4 2001/03/22 03:59:28 momjian Exp $ * *------------------------------------------------------------------------- */ @@ -59,7 +59,7 @@ ExecLimit(Limit *node) * may not be set until now.) * ---------------- */ - if (! limitstate->parmsSet) + if (!limitstate->parmsSet) recompute_limits(node); netlimit = limitstate->offset + limitstate->count; @@ -89,7 +89,7 @@ ExecLimit(Limit *node) { if (limitstate->atEnd) return NULL; - if (! limitstate->noCount && limitstate->position > netlimit) + if (!limitstate->noCount && limitstate->position > netlimit) return NULL; } else @@ -104,13 +104,14 @@ ExecLimit(Limit *node) slot = ExecProcNode(outerPlan, (Plan *) node); if (TupIsNull(slot)) { + /* * We are at start or end of the subplan. Update local state * appropriately, but always return NULL. */ if (ScanDirectionIsForward(direction)) { - Assert(! limitstate->atEnd); + Assert(!limitstate->atEnd); /* must bump position to stay in sync for backwards fetch */ limitstate->position++; limitstate->atEnd = true; @@ -122,6 +123,7 @@ ExecLimit(Limit *node) } return NULL; } + /* * We got the next subplan tuple successfully, so adjust state. */ @@ -135,7 +137,7 @@ ExecLimit(Limit *node) limitstate->atEnd = false; /* ---------------- - * Now, is this a tuple we want? If not, loop around to fetch + * Now, is this a tuple we want? If not, loop around to fetch * another tuple from the subplan. * ---------------- */ @@ -185,9 +187,9 @@ recompute_limits(Limit *node) if (node->limitCount) { limitstate->count = DatumGetInt32(ExecEvalExpr(node->limitCount, - econtext, - &isNull, - NULL)); + econtext, + &isNull, + NULL)); /* Interpret NULL count as no count (LIMIT ALL) */ if (isNull) limitstate->noCount = true; |