diff options
| author | Robert Haas <rhaas@postgresql.org> | 2017-10-31 14:41:21 +0530 |
|---|---|---|
| committer | Robert Haas <rhaas@postgresql.org> | 2017-10-31 14:43:05 +0530 |
| commit | cf7ab13bfb450dde50c86fa714a92964ce32b537 (patch) | |
| tree | fea135eb6549f1d217525f262eefac37cd48c536 /src/backend/optimizer/path/allpaths.c | |
| parent | 35f059e9bdfb3b14ac9d22a9e159d36ec0ccf804 (diff) | |
Fix code related to partitioning schemes for dropped columns.
The entry in appinfo->translated_vars can be NULL; if so, we must avoid
dereferencing it.
Ashutosh Bapat
Discussion: http://postgr.es/m/CAFjFpReL7+1ien=-21rhjpO3bV7aAm1rQ8XgLVk2csFagSzpZQ@mail.gmail.com
Diffstat (limited to 'src/backend/optimizer/path/allpaths.c')
| -rw-r--r-- | src/backend/optimizer/path/allpaths.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c index 4e565b3c000..a6efb4e1d39 100644 --- a/src/backend/optimizer/path/allpaths.c +++ b/src/backend/optimizer/path/allpaths.c @@ -950,6 +950,18 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel, attno - 1); int child_index; + /* + * Ignore any column dropped from the parent. + * Corresponding Var won't have any translation. It won't + * have attr_needed information, since it can not be + * referenced in the query. + */ + if (var == NULL) + { + Assert(attr_needed == NULL); + continue; + } + child_index = var->varattno - childrel->min_attr; childrel->attr_needed[child_index] = attr_needed; } |