statistics: fix wrong behavior for primary key' init stats

Signed-off-by: Weizhen Wang <[email protected]>
pingcap · May 15, 2024 · 26a5cd8 · 26a5cd8
1 parent ae1dfbe
commit 26a5cd8
Showing 1 changed file with 2 additions and 5 deletions.
diff --git a/pkg/statistics/handle/bootstrap.go b/pkg/statistics/handle/bootstrap.go
@@ -751,11 +751,8 @@ func (h *Handle) InitStats(is infoschema.InfoSchema) (err error) {
 	for _, table := range cache.Values() {
 		for _, col := range table.Columns {
 			if col.StatsAvailable() {
-				if mysql.HasPriKeyFlag(col.Info.GetFlag()) {
-					col.StatsLoadedStatus = statistics.NewStatsFullLoadStatus()
-				} else {
-					col.StatsLoadedStatus = statistics.NewStatsAllEvictedStatus()
-				}
+				// primary key column has no stats info, because primary key's is_index is false. so it cannot load the topn
+				col.StatsLoadedStatus = statistics.NewStatsAllEvictedStatus()
 			}
 		}
 	}