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author | Bruce Momjian <bruce@momjian.us> | 1999-02-12 02:37:52 +0000 |
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committer | Bruce Momjian <bruce@momjian.us> | 1999-02-12 02:37:52 +0000 |
commit | 55d0465009b99d340c643dafae8a6a0846e45de1 (patch) | |
tree | c38706161a4ef2cb23b7a4f78b553b06b59662c1 /src/backend/optimizer/util/pathnode.c | |
parent | 847da1a1ee4b066800effea20369318bb7e3c9d3 (diff) | |
download | postgresql-55d0465009b99d340c643dafae8a6a0846e45de1.tar.gz postgresql-55d0465009b99d340c643dafae8a6a0846e45de1.zip |
optimizer update
Diffstat (limited to 'src/backend/optimizer/util/pathnode.c')
-rw-r--r-- | src/backend/optimizer/util/pathnode.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/src/backend/optimizer/util/pathnode.c b/src/backend/optimizer/util/pathnode.c index 23e3e8ee0c2..43db1bd267f 100644 --- a/src/backend/optimizer/util/pathnode.c +++ b/src/backend/optimizer/util/pathnode.c @@ -7,7 +7,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/optimizer/util/pathnode.c,v 1.31 1999/02/11 21:05:28 momjian Exp $ + * $Header: /cvsroot/pgsql/src/backend/optimizer/util/pathnode.c,v 1.32 1999/02/12 02:37:52 momjian Exp $ * *------------------------------------------------------------------------- */ @@ -211,19 +211,25 @@ better_path(Path *new_path, List *unique_paths, bool *is_new) new_path->path_cost <= path->path_cost)) { *is_new = false; - return new_path; + return path; } /* same keys, new is more expensive, stop */ - else if - ((better_key == 0 && better_sort == 0 && - new_path->path_cost >= path->path_cost) || + if ((better_key == 0 && better_sort == 0 && + new_path->path_cost >= path->path_cost) || /* old is better, and less expensive, stop */ (((better_key == 2 && better_sort != 1) || (better_key != 1 && better_sort == 2)) && new_path->path_cost >= path->path_cost)) { +#ifdef OPTDB_DEBUG + printf("better key %d better sort %d\n", better_key, better_sort); + printf("new\n"); + pprint(new_path); + printf("old\n"); + pprint(path); +#endif *is_new = false; return NULL; } |