diff options
Diffstat (limited to 'src/backend/executor/execProcnode.c')
| -rw-r--r-- | src/backend/executor/execProcnode.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/src/backend/executor/execProcnode.c b/src/backend/executor/execProcnode.c index 4ab290360ac..c227282975a 100644 --- a/src/backend/executor/execProcnode.c +++ b/src/backend/executor/execProcnode.c @@ -840,6 +840,19 @@ ExecSetTupleBound(int64 tuples_needed, PlanState *child_node) sortState->bound = tuples_needed; } } + else if (IsA(child_node, AppendState)) + { + /* + * If it is an Append, we can apply the bound to any nodes that are + * children of the Append, since the Append surely need read no more + * than that many tuples from any one input. + */ + AppendState *aState = (AppendState *) child_node; + int i; + + for (i = 0; i < aState->as_nplans; i++) + ExecSetTupleBound(tuples_needed, aState->appendplans[i]); + } else if (IsA(child_node, MergeAppendState)) { /* |