diff options
| -rw-r--r-- | src/backend/executor/execAmi.c | 5 | ||||
| -rw-r--r-- | src/backend/optimizer/util/plancat.c | 2 | ||||
| -rw-r--r-- | src/include/nodes/pathnodes.h | 1 |
3 files changed, 8 insertions, 0 deletions
diff --git a/src/backend/executor/execAmi.c b/src/backend/executor/execAmi.c index 1f18e5d3a2f..4f5fdb0d427 100644 --- a/src/backend/executor/execAmi.c +++ b/src/backend/executor/execAmi.c @@ -414,6 +414,11 @@ 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 40f497660d1..bdb2f164295 100644 --- a/src/backend/optimizer/util/plancat.c +++ b/src/backend/optimizer/util/plancat.c @@ -273,6 +273,8 @@ 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 441e64eca9a..5de52edda4a 100644 --- a/src/include/nodes/pathnodes.h +++ b/src/include/nodes/pathnodes.h @@ -830,6 +830,7 @@ 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 */ }; |