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Diffstat (limited to 'src/backend/parser/parse_utilcmd.c')
| -rw-r--r-- | src/backend/parser/parse_utilcmd.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/backend/parser/parse_utilcmd.c b/src/backend/parser/parse_utilcmd.c index 2826559d09b..1a64a522798 100644 --- a/src/backend/parser/parse_utilcmd.c +++ b/src/backend/parser/parse_utilcmd.c @@ -3424,7 +3424,8 @@ transformAlterTableStmt(Oid relid, AlterTableStmt *stmt, errmsg("column \"%s\" of relation \"%s\" does not exist", cmd->name, RelationGetRelationName(rel)))); - if (TupleDescAttr(tupdesc, attnum - 1)->attidentity) + if (attnum > 0 && + TupleDescAttr(tupdesc, attnum - 1)->attidentity) { Oid seq_relid = getIdentitySequence(relid, attnum, false); Oid typeOid = typenameTypeId(pstate, def->typeName); |