diff options
| -rw-r--r-- | src/backend/commands/statscmds.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/backend/commands/statscmds.c b/src/backend/commands/statscmds.c index 78917844dee..afe6744e237 100644 --- a/src/backend/commands/statscmds.c +++ b/src/backend/commands/statscmds.c @@ -288,9 +288,24 @@ CreateStatistics(CreateStatsStmt *stmt) Node *expr = selem->expr; Oid atttype; TypeCacheEntry *type; + Bitmapset *attnums = NULL; + int k; Assert(expr != NULL); + /* Disallow expressions referencing system attributes. */ + pull_varattnos(expr, 1, &attnums); + + k = -1; + while ((k = bms_next_member(attnums, k)) >= 0) + { + AttrNumber attnum = k + FirstLowInvalidHeapAttributeNumber; + if (attnum <= 0) + ereport(ERROR, + (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), + errmsg("statistics creation on system columns is not supported"))); + } + /* * Disallow data types without a less-than operator. * |