diff options
Diffstat (limited to 'src/backend/executor/nodeGroup.c')
| -rw-r--r-- | src/backend/executor/nodeGroup.c | 31 |
1 files changed, 16 insertions, 15 deletions
diff --git a/src/backend/executor/nodeGroup.c b/src/backend/executor/nodeGroup.c index e16a228fa15..91a08add4d9 100644 --- a/src/backend/executor/nodeGroup.c +++ b/src/backend/executor/nodeGroup.c @@ -15,7 +15,7 @@ * locate group boundaries. * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/executor/nodeGroup.c,v 1.61 2005/03/16 21:38:07 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/executor/nodeGroup.c,v 1.62 2005/10/15 02:49:17 momjian Exp $ * *------------------------------------------------------------------------- */ @@ -61,8 +61,8 @@ ExecGroup(GroupState *node) */ /* - * If first time through, acquire first input tuple and determine - * whether to return it or not. + * If first time through, acquire first input tuple and determine whether + * to return it or not. */ if (TupIsNull(firsttupleslot)) { @@ -76,15 +76,15 @@ ExecGroup(GroupState *node) /* Copy tuple, set up as input for qual test and projection */ ExecCopySlot(firsttupleslot, outerslot); econtext->ecxt_scantuple = firsttupleslot; + /* - * Check the qual (HAVING clause); if the group does not match, - * ignore it and fall into scan loop. + * Check the qual (HAVING clause); if the group does not match, ignore + * it and fall into scan loop. */ if (ExecQual(node->ss.ps.qual, econtext, false)) { /* - * Form and return a projection tuple using the first input - * tuple. + * Form and return a projection tuple using the first input tuple. */ return ExecProject(node->ss.ps.ps_ProjInfo, NULL); } @@ -92,8 +92,8 @@ ExecGroup(GroupState *node) /* * This loop iterates once per input tuple group. At the head of the - * loop, we have finished processing the first tuple of the group and - * now need to scan over all the other group members. + * loop, we have finished processing the first tuple of the group and now + * need to scan over all the other group members. */ for (;;) { @@ -120,22 +120,23 @@ ExecGroup(GroupState *node) econtext->ecxt_per_tuple_memory)) break; } + /* - * We have the first tuple of the next input group. See if we - * want to return it. + * We have the first tuple of the next input group. See if we want to + * return it. */ /* Copy tuple, set up as input for qual test and projection */ ExecCopySlot(firsttupleslot, outerslot); econtext->ecxt_scantuple = firsttupleslot; + /* - * Check the qual (HAVING clause); if the group does not match, - * ignore it and loop back to scan the rest of the group. + * Check the qual (HAVING clause); if the group does not match, ignore + * it and loop back to scan the rest of the group. */ if (ExecQual(node->ss.ps.qual, econtext, false)) { /* - * Form and return a projection tuple using the first input - * tuple. + * Form and return a projection tuple using the first input tuple. */ return ExecProject(node->ss.ps.ps_ProjInfo, NULL); } |