From 68bdfb471eec6d4e1fa21983f650cb7ed39b0323 Mon Sep 17 00:00:00 2001
From: Jiachen1018 <lijiachen15@huawei.com>
Date: Mon, 25 Mar 2024 16:48:10 +0800
Subject: [PATCH] fix rec_per_key if no rows

---
 storage/tianchi/tse_cbo.cc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/storage/tianchi/tse_cbo.cc b/storage/tianchi/tse_cbo.cc
index c73df7f..7b24310 100644
--- a/storage/tianchi/tse_cbo.cc
+++ b/storage/tianchi/tse_cbo.cc
@@ -460,6 +460,9 @@ void tse_index_stats_update(TABLE *table, tianchi_cbo_stats_t *cbo_stats)
     n_diff = cbo_stats->tse_cbo_stats_table.ndv_keys;
     estimate_rows = cbo_stats->tse_cbo_stats_table.estimate_rows;
   }
+  if (estimate_rows == 0) {
+    return;
+  }
   for (uint32 i = 0; i < table->s->keys; i++){
     sk = table->key_info[i];
     if (*(n_diff+i) == 0) {
-- 
Gitee