statstics: forcely use index to order when to init stats (#52462)

close #52466
pingcap · Apr 11, 2024 · 87b8d01 · 87b8d01
1 parent 5872ccd
commit 87b8d01
Showing 1 changed file with 4 additions and 4 deletions.
diff --git a/pkg/statistics/handle/bootstrap.go b/pkg/statistics/handle/bootstrap.go
@@ -269,7 +269,7 @@ func (h *Handle) initStatsHistograms4Chunk(is infoschema.InfoSchema, cache stats
 }
 
 func (h *Handle) initStatsHistogramsLite(is infoschema.InfoSchema, cache statstypes.StatsCache) error {
-	sql := "select HIGH_PRIORITY table_id, is_index, hist_id, distinct_count, version, null_count, tot_col_size, stats_ver, correlation, flag, last_analyze_pos from mysql.stats_histograms order by table_id"
+	sql := "select /*+ ORDER_INDEX(mysql.stats_histograms,tbl)*/ HIGH_PRIORITY table_id, is_index, hist_id, distinct_count, version, null_count, tot_col_size, stats_ver, correlation, flag, last_analyze_pos from mysql.stats_histograms order by table_id"
 	rc, err := util.Exec(h.initStatsCtx, sql)
 	if err != nil {
 		return errors.Trace(err)
@@ -292,7 +292,7 @@ func (h *Handle) initStatsHistogramsLite(is infoschema.InfoSchema, cache statsty
 }
 
 func (h *Handle) initStatsHistograms(is infoschema.InfoSchema, cache statstypes.StatsCache) error {
-	sql := "select HIGH_PRIORITY table_id, is_index, hist_id, distinct_count, version, null_count, cm_sketch, tot_col_size, stats_ver, correlation, flag, last_analyze_pos from mysql.stats_histograms order by table_id"
+	sql := "select  /*+ ORDER_INDEX(mysql.stats_histograms,tbl)*/ HIGH_PRIORITY table_id, is_index, hist_id, distinct_count, version, null_count, cm_sketch, tot_col_size, stats_ver, correlation, flag, last_analyze_pos from mysql.stats_histograms order by table_id"
 	rc, err := util.Exec(h.initStatsCtx, sql)
 	if err != nil {
 		return errors.Trace(err)
@@ -402,7 +402,7 @@ func (*Handle) initStatsTopN4Chunk(cache statstypes.StatsCache, iter *chunk.Iter
 }
 
 func (h *Handle) initStatsTopN(cache statstypes.StatsCache) error {
-	sql := "select HIGH_PRIORITY table_id, hist_id, value, count from mysql.stats_top_n where is_index = 1 order by table_id"
+	sql := "select /*+ ORDER_INDEX(mysql.stats_top_n,tbl)*/  HIGH_PRIORITY table_id, hist_id, value, count from mysql.stats_top_n where is_index = 1 order by table_id"
 	rc, err := util.Exec(h.initStatsCtx, sql)
 	if err != nil {
 		return errors.Trace(err)
@@ -592,7 +592,7 @@ func (h *Handle) initStatsBuckets(cache statstypes.StatsCache) error {
 			return errors.Trace(err)
 		}
 	} else {
-		sql := "select HIGH_PRIORITY table_id, is_index, hist_id, count, repeats, lower_bound, upper_bound, ndv from mysql.stats_buckets order by table_id, is_index, hist_id, bucket_id"
+		sql := "select /*+ ORDER_INDEX(mysql.stats_buckets,tbl)*/ HIGH_PRIORITY table_id, is_index, hist_id, count, repeats, lower_bound, upper_bound, ndv from mysql.stats_buckets order by table_id, is_index, hist_id, bucket_id"
 		rc, err := util.Exec(h.initStatsCtx, sql)
 		if err != nil {
 			return errors.Trace(err)