address comment.

pingcap · Apr 26, 2018 · 5d3620f · 5d3620f
1 parent 8192bfa
commit 5d3620f
Showing 1 changed file with 6 additions and 4 deletions.
diff --git a/plan/gen_physical_plans.go b/plan/gen_physical_plans.go
@@ -259,10 +259,12 @@ func (p *LogicalJoin) getIndexJoinByOuterIdx(prop *requiredProp, outerIdx int) [
  accessPaths := x.possibleAccessPaths
  if len(accessPaths) > 0 && x.possibleAccessPaths[0].isRowID {
  accessPaths = accessPaths[1:]
- pkCol := x.getPKIsHandleCol()
- if pkCol != nil && innerJoinKeys[0].Equal(nil, pkCol) {
- innerPlan := x.forceToTableScan(pkCol)
- return p.constructIndexJoin(prop, innerJoinKeys, outerJoinKeys, outerIdx, innerPlan, nil, nil)
+ if len(innerJoinKeys) == 1 {
+ pkCol := x.getPKIsHandleCol()
+ if pkCol != nil && innerJoinKeys[0].Equal(nil, pkCol) {
+ innerPlan := x.forceToTableScan(pkCol)
+ return p.constructIndexJoin(prop, innerJoinKeys, outerJoinKeys, outerIdx, innerPlan, nil, nil)
+ }
  }
  }
  var (