diff --git a/src/backend/executor/execAmi.c b/src/backend/executor/execAmi.c index e2154ba86a..0c10f1d35c 100644 --- a/src/backend/executor/execAmi.c +++ b/src/backend/executor/execAmi.c @@ -417,6 +417,11 @@ ExecSupportsMarkRestore(Path *pathnode) { case T_IndexScan: case T_IndexOnlyScan: + /* + * Not all index types support mark/restore. + */ + return castNode(IndexPath, pathnode)->indexinfo->amcanmarkpos; + case T_Material: case T_Sort: return true; diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c index 25545029d7..3c7f3087a8 100644 --- a/src/backend/optimizer/util/plancat.c +++ b/src/backend/optimizer/util/plancat.c @@ -275,6 +275,8 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent, info->amhasgettuple = (amroutine->amgettuple != NULL); info->amhasgetbitmap = amroutine->amgetbitmap != NULL && relation->rd_tableam->scan_bitmap_next_block != NULL; + info->amcanmarkpos = (amroutine->ammarkpos != NULL && + amroutine->amrestrpos != NULL); info->amcostestimate = amroutine->amcostestimate; Assert(info->amcostestimate != NULL); diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h index 485d1b06c9..8d1ad3339f 100644 --- a/src/include/nodes/pathnodes.h +++ b/src/include/nodes/pathnodes.h @@ -864,6 +864,7 @@ struct IndexOptInfo bool amhasgettuple; /* does AM have amgettuple interface? */ bool amhasgetbitmap; /* does AM have amgetbitmap interface? */ bool amcanparallel; /* does AM support parallel scan? */ + bool amcanmarkpos; /* does AM support mark/restore? */ /* Rather than include amapi.h here, we declare amcostestimate like this */ void (*amcostestimate) (); /* AM's cost estimator */ };