planner: check nil pointer in rule_result_reorder to avoid panic (#48100

) (#48116) close #45044
pingcap · Dec 12, 2023 · 266d8f7 · 266d8f7
1 parent 126cf52
commit 266d8f7
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/planner/core/rule_result_reorder.go b/planner/core/rule_result_reorder.go
@@ -106,6 +106,9 @@ func (rs *resultReorder) extractHandleCol(lp LogicalPlan) *expression.Column {
  switch x := lp.(type) {
  case *LogicalSelection, *LogicalLimit:
  handleCol := rs.extractHandleCol(lp.Children()[0])
+ if handleCol == nil {
+ return nil // fail to extract handle column from the child, just return nil.
+ }
  if x.Schema().Contains(handleCol) {
  // some Projection Operator might be inlined, so check the column again here
  return handleCol