diff --git a/src/share/stat/ob_dbms_stats_maintenance_window.cpp b/src/share/stat/ob_dbms_stats_maintenance_window.cpp
index 2f446f1024..2d26e9a448 100644
--- a/src/share/stat/ob_dbms_stats_maintenance_window.cpp
+++ b/src/share/stat/ob_dbms_stats_maintenance_window.cpp
@@ -399,13 +399,20 @@ int ObDbmsStatsMaintenanceWindow::is_stats_maintenance_window_attr(const sql::Ob
       ObObj time_obj;
       ObObj src_obj;
       int64_t current_time = ObTimeUtility::current_time();
-      ObArenaAllocator calc_buf(ObModIds::OB_SQL_PARSER);
+      ObArenaAllocator calc_buf("DbmsStatsWindow");
       ObCastCtx cast_ctx(&calc_buf, NULL, CM_NONE, ObCharset::get_system_collation());
       cast_ctx.dtc_params_ = session->get_dtc_params();
       int64_t specify_time = -1;
-      int32_t offset = 0;
+      int32_t offset_sec = 0;
       src_obj.set_string(ObVarcharType, val_name);
-      if (lib::is_oracle_mode()) {
+      const ObTimeZoneInfo* tz_info = get_timezone_info(session);
+      if (NULL != tz_info) {
+        if (OB_FAIL(tz_info->get_timezone_offset(ObTimeUtility::current_time(), offset_sec))) {
+          LOG_WARN("failed to get timezone offset", K(ret));
+        }
+      }
+      if (OB_FAIL(ret)) {
+      } else if (lib::is_oracle_mode()) {
         if (OB_FAIL(ObObjCaster::to_type(ObTimestampTZType, cast_ctx, src_obj, time_obj))) {
           LOG_WARN("failed to ObTimestampTZType type", K(ret));
         } else {
@@ -415,21 +422,13 @@ int ObDbmsStatsMaintenanceWindow::is_stats_maintenance_window_attr(const sql::Ob
         if (OB_FAIL(ObObjCaster::to_type(ObDateTimeType, cast_ctx, src_obj, time_obj))) {
           LOG_WARN("failed to ObTimestampType type", K(ret));
         } else {
-          specify_time = time_obj.get_datetime();
-          const ObTimeZoneInfo* tz_info = get_timezone_info(session);
-          if (NULL != tz_info) {
-            if (OB_FAIL(tz_info->get_timezone_offset(USEC_TO_SEC(specify_time), offset))) {
-              LOG_WARN("failed to get offset between utc and local", K(ret));
-            } else {
-              specify_time -= SEC_TO_USEC(offset);
-            }
-          }
+          specify_time = time_obj.get_datetime() - SEC_TO_USEC(offset_sec);
         }
       }
       if (OB_SUCC(ret)) {
         bool is_valid = false;
-        if (OB_FAIL(check_date_validate(job_name, specify_time + SEC_TO_USEC(offset),
-                                        current_time + SEC_TO_USEC(offset), is_valid))) {
+        if (OB_FAIL(check_date_validate(job_name, specify_time + SEC_TO_USEC(offset_sec),
+                                        current_time + SEC_TO_USEC(offset_sec), is_valid))) {
           LOG_WARN("failed to check date valid", K(ret));
         } else if (!is_valid) {
           ret = OB_ERR_DBMS_STATS_PL;
@@ -551,6 +550,8 @@ int ObDbmsStatsMaintenanceWindow::check_date_validate(const ObString &job_name,
     LOG_WARN("get unexpected error", K(ret), K(specify_time));
   } else if (current_time > specify_time) {
     is_valid = false;
+  } else if (0 == job_name.case_compare(opt_stats_history_manager)) {
+    is_valid = true;
   } else if (OB_FAIL(ObTimeConverter::usec_to_ob_time(specify_time, ob_time))) {
     LOG_WARN("failed to usec to ob time", K(ret), K(specify_time));
   } else if (OB_UNLIKELY(ob_time.parts_[DT_WDAY] < 1 ||
diff --git a/src/sql/optimizer/ob_dynamic_sampling.cpp b/src/sql/optimizer/ob_dynamic_sampling.cpp
index 5228d00b5f..2aa53b703f 100644
--- a/src/sql/optimizer/ob_dynamic_sampling.cpp
+++ b/src/sql/optimizer/ob_dynamic_sampling.cpp
@@ -1378,6 +1378,15 @@ int ObDynamicSamplingUtils::check_ds_can_use_filter(const ObRawExpr *filter,
                real_expr->get_expr_type() == T_OP_BOOL) {
       no_use = true;
     } else {/*do nothing*/}
+  } else if (filter->is_column_ref_expr()) {
+    //Dynamic Sampling of columns with LOB-related types is prohibited, as projecting such type columns is particularly slow.
+    //bug:
+    if (!ObColumnStatParam::is_valid_opt_col_type(filter->get_data_type())) {
+      no_use = true;
+    } else if (ob_obj_type_class(filter->get_data_type()) == ColumnTypeClass::ObTextTC &&
+               filter->get_data_type() != ObTinyTextType) {
+      no_use = true;
+    }
   } else {/*do nothing*/}
   if (OB_SUCC(ret) && !no_use) {
     ++ total_expr_cnt;
diff --git a/tools/deploy/mysql_test/test_suite/geometry/r/mysql/geometry_bugfix_mysql.result b/tools/deploy/mysql_test/test_suite/geometry/r/mysql/geometry_bugfix_mysql.result
index ec6aaef568..154c2e8e37 100644
--- a/tools/deploy/mysql_test/test_suite/geometry/r/mysql/geometry_bugfix_mysql.result
+++ b/tools/deploy/mysql_test/test_suite/geometry/r/mysql/geometry_bugfix_mysql.result
@@ -427,12 +427,12 @@ INSERT INTO t1 (g) VALUES
 (ST_GeomFromText('POINT(6 6)', 3294)),
 (ST_GeomFromText('POINT(7 7)', 3294)),
 (ST_GeomFromText('LINESTRING(0 0, 3 3)',3294));
-explain select st_astext(a.g), st_astext(b.g) from t1 a join t1 b where _st_covers(a.g, b.g);
+explain select /*+dynamic_sampling(1)*/st_astext(a.g), st_astext(b.g) from t1 a join t1 b where _st_covers(a.g, b.g);
 Query Plan
 ===============================================================
 |ID|OPERATOR                     |NAME  |EST.ROWS|EST.TIME(us)|
 ---------------------------------------------------------------
-|0 |NESTED-LOOP JOIN             |      |27      |345         |
+|0 |NESTED-LOOP JOIN             |      |21      |345         |
 |1 |├─TABLE FULL SCAN            |a     |9       |3           |
 |2 |└─DISTRIBUTED TABLE FULL SCAN|b(idx)|3       |38          |
 ===============================================================
@@ -448,12 +448,12 @@ Outputs & filters:
       access([b.__pk_increment], [b.g]), partitions(p0)
       is_index_back=true, is_global_index=false, filter_before_indexback[false], 
       range_key([b.__cellid_16], [b.__mbr_16], [b.__pk_increment]), range(MIN ; MAX)
-explain select st_astext(a.g), st_astext(b.g) from t1 a join t1 b where st_contains(a.g, b.g);
+explain select /*+dynamic_sampling(1)*/st_astext(a.g), st_astext(b.g) from t1 a join t1 b where st_contains(a.g, b.g);
 Query Plan
 ===============================================================
 |ID|OPERATOR                     |NAME  |EST.ROWS|EST.TIME(us)|
 ---------------------------------------------------------------
-|0 |NESTED-LOOP JOIN             |      |27      |345         |
+|0 |NESTED-LOOP JOIN             |      |21      |345         |
 |1 |├─TABLE FULL SCAN            |a     |9       |3           |
 |2 |└─DISTRIBUTED TABLE FULL SCAN|b(idx)|3       |38          |
 ===============================================================
@@ -469,12 +469,12 @@ Outputs & filters:
       access([b.__pk_increment], [b.g]), partitions(p0)
       is_index_back=true, is_global_index=false, filter_before_indexback[false], 
       range_key([b.__cellid_16], [b.__mbr_16], [b.__pk_increment]), range(MIN ; MAX)
-explain select st_astext(a.g), st_astext(b.g) from t1 a join t1 b where st_within(a.g, b.g);
+explain select /*+dynamic_sampling(1)*/st_astext(a.g), st_astext(b.g) from t1 a join t1 b where st_within(a.g, b.g);
 Query Plan
 ===============================================================
 |ID|OPERATOR                     |NAME  |EST.ROWS|EST.TIME(us)|
 ---------------------------------------------------------------
-|0 |NESTED-LOOP JOIN             |      |27      |345         |
+|0 |NESTED-LOOP JOIN             |      |21      |345         |
 |1 |├─TABLE FULL SCAN            |a     |9       |3           |
 |2 |└─DISTRIBUTED TABLE FULL SCAN|b(idx)|3       |38          |
 ===============================================================
@@ -490,12 +490,12 @@ Outputs & filters:
       access([b.__pk_increment], [b.g]), partitions(p0)
       is_index_back=true, is_global_index=false, filter_before_indexback[false], 
       range_key([b.__cellid_16], [b.__mbr_16], [b.__pk_increment]), range(MIN ; MAX)
-explain select st_astext(a.g), st_astext(b.g) from t1 a join t1 b where _st_dwithin(a.g, b.g, 0.1);
+explain select /*+dynamic_sampling(1)*/st_astext(a.g), st_astext(b.g) from t1 a join t1 b where _st_dwithin(a.g, b.g, 0.1);
 Query Plan
 ===============================================================
 |ID|OPERATOR                     |NAME  |EST.ROWS|EST.TIME(us)|
 ---------------------------------------------------------------
-|0 |NESTED-LOOP JOIN             |      |27      |345         |
+|0 |NESTED-LOOP JOIN             |      |21      |345         |
 |1 |├─TABLE FULL SCAN            |a     |9       |3           |
 |2 |└─DISTRIBUTED TABLE FULL SCAN|b(idx)|3       |38          |
 ===============================================================
diff --git a/tools/deploy/mysql_test/test_suite/geometry/r/mysql/geometry_filter_mysql.result b/tools/deploy/mysql_test/test_suite/geometry/r/mysql/geometry_filter_mysql.result
index 58c8238fae..f754acba51 100644
--- a/tools/deploy/mysql_test/test_suite/geometry/r/mysql/geometry_filter_mysql.result
+++ b/tools/deploy/mysql_test/test_suite/geometry/r/mysql/geometry_filter_mysql.result
@@ -127,8 +127,8 @@ Optimization Info:
       table_rows:8
       physical_range_rows:8
       logical_range_rows:8
-      index_back_rows:8
-      output_rows:1
+      index_back_rows:2
+      output_rows:0
       table_dop:1
       dop_method:Table DOP
       avaiable_index_name:[idx, t]
@@ -188,8 +188,8 @@ Optimization Info:
       table_rows:8
       physical_range_rows:8
       logical_range_rows:8
-      index_back_rows:8
-      output_rows:1
+      index_back_rows:2
+      output_rows:0
       table_dop:1
       dop_method:Table DOP
       avaiable_index_name:[idx, t]
@@ -205,7 +205,7 @@ Query Plan
 =================================================
 |ID|OPERATOR       |NAME  |EST.ROWS|EST.TIME(us)|
 -------------------------------------------------
-|0 |TABLE FULL SCAN|t(idx)|2       |355         |
+|0 |TABLE FULL SCAN|t(idx)|1       |355         |
 =================================================
 Outputs & filters:
 -------------------------------------
@@ -249,8 +249,8 @@ Optimization Info:
       table_rows:8
       physical_range_rows:8
       logical_range_rows:8
-      index_back_rows:8
-      output_rows:2
+      index_back_rows:2
+      output_rows:0
       table_dop:1
       dop_method:Table DOP
       avaiable_index_name:[idx, t]
@@ -266,7 +266,7 @@ Query Plan
 =================================================
 |ID|OPERATOR       |NAME  |EST.ROWS|EST.TIME(us)|
 -------------------------------------------------
-|0 |TABLE FULL SCAN|t(idx)|5       |363         |
+|0 |TABLE FULL SCAN|t(idx)|1       |363         |
 =================================================
 Outputs & filters:
 -------------------------------------
@@ -311,8 +311,8 @@ Optimization Info:
       table_rows:8
       physical_range_rows:8
       logical_range_rows:8
-      index_back_rows:8
-      output_rows:5
+      index_back_rows:2
+      output_rows:0
       table_dop:1
       dop_method:Table DOP
       avaiable_index_name:[idx, t]
@@ -328,7 +328,7 @@ Query Plan
 =================================================
 |ID|OPERATOR       |NAME  |EST.ROWS|EST.TIME(us)|
 -------------------------------------------------
-|0 |TABLE FULL SCAN|t(idx)|2       |355         |
+|0 |TABLE FULL SCAN|t(idx)|1       |355         |
 =================================================
 Outputs & filters:
 -------------------------------------
@@ -372,8 +372,8 @@ Optimization Info:
       table_rows:8
       physical_range_rows:8
       logical_range_rows:8
-      index_back_rows:8
-      output_rows:2
+      index_back_rows:2
+      output_rows:0
       table_dop:1
       dop_method:Table DOP
       avaiable_index_name:[idx, t]
@@ -389,7 +389,7 @@ Query Plan
 =================================================
 |ID|OPERATOR       |NAME  |EST.ROWS|EST.TIME(us)|
 -------------------------------------------------
-|0 |TABLE FULL SCAN|t(idx)|3       |359         |
+|0 |TABLE FULL SCAN|t(idx)|1       |359         |
 =================================================
 Outputs & filters:
 -------------------------------------
@@ -434,8 +434,8 @@ Optimization Info:
       table_rows:8
       physical_range_rows:8
       logical_range_rows:8
-      index_back_rows:8
-      output_rows:3
+      index_back_rows:2
+      output_rows:0
       table_dop:1
       dop_method:Table DOP
       avaiable_index_name:[idx, t]
@@ -451,7 +451,7 @@ Query Plan
 =================================================
 |ID|OPERATOR       |NAME  |EST.ROWS|EST.TIME(us)|
 -------------------------------------------------
-|0 |TABLE FULL SCAN|t(idx)|6       |351         |
+|0 |TABLE FULL SCAN|t(idx)|1       |351         |
 =================================================
 Outputs & filters:
 -------------------------------------
@@ -496,8 +496,8 @@ Optimization Info:
       table_rows:8
       physical_range_rows:8
       logical_range_rows:8
-      index_back_rows:8
-      output_rows:6
+      index_back_rows:2
+      output_rows:0
       table_dop:1
       dop_method:Table DOP
       avaiable_index_name:[idx, t]
@@ -513,7 +513,7 @@ Query Plan
 =================================================
 |ID|OPERATOR       |NAME  |EST.ROWS|EST.TIME(us)|
 -------------------------------------------------
-|0 |TABLE FULL SCAN|t(idx)|3       |355         |
+|0 |TABLE FULL SCAN|t(idx)|1       |355         |
 =================================================
 Outputs & filters:
 -------------------------------------
@@ -557,8 +557,8 @@ Optimization Info:
       table_rows:8
       physical_range_rows:8
       logical_range_rows:8
-      index_back_rows:8
-      output_rows:3
+      index_back_rows:2
+      output_rows:0
       table_dop:1
       dop_method:Table DOP
       avaiable_index_name:[idx, t]
@@ -677,8 +677,8 @@ Optimization Info:
       table_rows:8
       physical_range_rows:8
       logical_range_rows:8
-      index_back_rows:8
-      output_rows:2
+      index_back_rows:3
+      output_rows:1
       table_dop:1
       dop_method:Table DOP
       avaiable_index_name:[idx, t]
@@ -738,8 +738,8 @@ Optimization Info:
       table_rows:8
       physical_range_rows:8
       logical_range_rows:8
-      index_back_rows:8
-      output_rows:1
+      index_back_rows:0
+      output_rows:0
       table_dop:1
       dop_method:Table DOP
       avaiable_index_name:[idx, t]
@@ -1008,8 +1008,8 @@ Optimization Info:
       table_rows:2
       physical_range_rows:2
       logical_range_rows:2
-      index_back_rows:2
-      output_rows:1
+      index_back_rows:0
+      output_rows:0
       table_dop:1
       dop_method:Table DOP
       avaiable_index_name:[geom, geo_table2]
@@ -1077,8 +1077,8 @@ Optimization Info:
       table_rows:2
       physical_range_rows:2
       logical_range_rows:2
-      index_back_rows:2
-      output_rows:1
+      index_back_rows:0
+      output_rows:0
       table_dop:1
       dop_method:Table DOP
       avaiable_index_name:[geom, geo_table2]
@@ -1115,8 +1115,8 @@ Query Plan
 ============================================================
 |ID|OPERATOR         |NAME           |EST.ROWS|EST.TIME(us)|
 ------------------------------------------------------------
-|0 |SORT             |               |2       |299         |
-|1 |└─TABLE FULL SCAN|geo_table(geom)|2       |299         |
+|0 |SORT             |               |1       |299         |
+|1 |└─TABLE FULL SCAN|geo_table(geom)|1       |299         |
 ============================================================
 Outputs & filters:
 -------------------------------------
@@ -1162,8 +1162,8 @@ Optimization Info:
       table_rows:6
       physical_range_rows:6
       logical_range_rows:6
-      index_back_rows:6
-      output_rows:2
+      index_back_rows:1
+      output_rows:0
       table_dop:1
       dop_method:Table DOP
       avaiable_index_name:[geom, geo_table]
@@ -1335,7 +1335,7 @@ Query Plan
 =================================================
 |ID|OPERATOR       |NAME  |EST.ROWS|EST.TIME(us)|
 -------------------------------------------------
-|0 |TABLE FULL SCAN|t(idx)|7       |523         |
+|0 |TABLE FULL SCAN|t(idx)|1       |523         |
 =================================================
 Outputs & filters:
 -------------------------------------
@@ -1379,8 +1379,8 @@ Optimization Info:
       table_rows:14
       physical_range_rows:14
       logical_range_rows:14
-      index_back_rows:14
-      output_rows:7
+      index_back_rows:3
+      output_rows:0
       table_dop:1
       dop_method:Table DOP
       avaiable_index_name:[idx, t]
@@ -1396,7 +1396,7 @@ Query Plan
 =================================================
 |ID|OPERATOR       |NAME  |EST.ROWS|EST.TIME(us)|
 -------------------------------------------------
-|0 |TABLE FULL SCAN|t(idx)|6       |523         |
+|0 |TABLE FULL SCAN|t(idx)|1       |523         |
 =================================================
 Outputs & filters:
 -------------------------------------
@@ -1440,8 +1440,8 @@ Optimization Info:
       table_rows:14
       physical_range_rows:14
       logical_range_rows:14
-      index_back_rows:14
-      output_rows:6
+      index_back_rows:3
+      output_rows:0
       table_dop:1
       dop_method:Table DOP
       avaiable_index_name:[idx, t]
@@ -1457,7 +1457,7 @@ Query Plan
 =================================================
 |ID|OPERATOR       |NAME  |EST.ROWS|EST.TIME(us)|
 -------------------------------------------------
-|0 |TABLE FULL SCAN|t(idx)|4       |523         |
+|0 |TABLE FULL SCAN|t(idx)|1       |523         |
 =================================================
 Outputs & filters:
 -------------------------------------
@@ -1501,8 +1501,8 @@ Optimization Info:
       table_rows:14
       physical_range_rows:14
       logical_range_rows:14
-      index_back_rows:14
-      output_rows:4
+      index_back_rows:3
+      output_rows:0
       table_dop:1
       dop_method:Table DOP
       avaiable_index_name:[idx, t]
@@ -1564,8 +1564,8 @@ Optimization Info:
       table_rows:14
       physical_range_rows:14
       logical_range_rows:14
-      index_back_rows:14
-      output_rows:1
+      index_back_rows:3
+      output_rows:0
       table_dop:1
       dop_method:Table DOP
       avaiable_index_name:[idx, t]
@@ -1581,7 +1581,7 @@ Query Plan
 =================================================
 |ID|OPERATOR       |NAME  |EST.ROWS|EST.TIME(us)|
 -------------------------------------------------
-|0 |TABLE FULL SCAN|t(idx)|5       |523         |
+|0 |TABLE FULL SCAN|t(idx)|1       |523         |
 =================================================
 Outputs & filters:
 -------------------------------------
@@ -1625,8 +1625,8 @@ Optimization Info:
       table_rows:14
       physical_range_rows:14
       logical_range_rows:14
-      index_back_rows:14
-      output_rows:5
+      index_back_rows:3
+      output_rows:0
       table_dop:1
       dop_method:Table DOP
       avaiable_index_name:[idx, t]
@@ -1642,7 +1642,7 @@ Query Plan
 =================================================
 |ID|OPERATOR       |NAME  |EST.ROWS|EST.TIME(us)|
 -------------------------------------------------
-|0 |TABLE FULL SCAN|t(idx)|2       |527         |
+|0 |TABLE FULL SCAN|t(idx)|1       |527         |
 =================================================
 Outputs & filters:
 -------------------------------------
@@ -1687,8 +1687,8 @@ Optimization Info:
       table_rows:14
       physical_range_rows:14
       logical_range_rows:14
-      index_back_rows:14
-      output_rows:2
+      index_back_rows:3
+      output_rows:0
       table_dop:1
       dop_method:Table DOP
       avaiable_index_name:[idx, t]
@@ -1749,8 +1749,8 @@ Optimization Info:
       table_rows:14
       physical_range_rows:14
       logical_range_rows:14
-      index_back_rows:14
-      output_rows:1
+      index_back_rows:3
+      output_rows:0
       table_dop:1
       dop_method:Table DOP
       avaiable_index_name:[idx, t]
@@ -1766,7 +1766,7 @@ Query Plan
 =================================================
 |ID|OPERATOR       |NAME  |EST.ROWS|EST.TIME(us)|
 -------------------------------------------------
-|0 |TABLE FULL SCAN|t(idx)|2       |523         |
+|0 |TABLE FULL SCAN|t(idx)|1       |523         |
 =================================================
 Outputs & filters:
 -------------------------------------
@@ -1810,8 +1810,8 @@ Optimization Info:
       table_rows:14
       physical_range_rows:14
       logical_range_rows:14
-      index_back_rows:14
-      output_rows:2
+      index_back_rows:3
+      output_rows:0
       table_dop:1
       dop_method:Table DOP
       avaiable_index_name:[idx, t]
@@ -1983,8 +1983,8 @@ Optimization Info:
       table_rows:14
       physical_range_rows:14
       logical_range_rows:14
-      index_back_rows:14
-      output_rows:1
+      index_back_rows:3
+      output_rows:0
       table_dop:1
       dop_method:Table DOP
       avaiable_index_name:[idx, t]
@@ -2044,8 +2044,8 @@ Optimization Info:
       table_rows:14
       physical_range_rows:14
       logical_range_rows:14
-      index_back_rows:14
-      output_rows:1
+      index_back_rows:3
+      output_rows:0
       table_dop:1
       dop_method:Table DOP
       avaiable_index_name:[idx, t]
@@ -2105,8 +2105,8 @@ Optimization Info:
       table_rows:14
       physical_range_rows:14
       logical_range_rows:14
-      index_back_rows:14
-      output_rows:1
+      index_back_rows:3
+      output_rows:0
       table_dop:1
       dop_method:Table DOP
       avaiable_index_name:[idx, t]
@@ -2122,7 +2122,7 @@ Query Plan
 =================================================
 |ID|OPERATOR       |NAME  |EST.ROWS|EST.TIME(us)|
 -------------------------------------------------
-|0 |TABLE FULL SCAN|t(idx)|9       |531         |
+|0 |TABLE FULL SCAN|t(idx)|1       |531         |
 =================================================
 Outputs & filters:
 -------------------------------------
@@ -2167,8 +2167,8 @@ Optimization Info:
       table_rows:14
       physical_range_rows:14
       logical_range_rows:14
-      index_back_rows:14
-      output_rows:9
+      index_back_rows:3
+      output_rows:0
       table_dop:1
       dop_method:Table DOP
       avaiable_index_name:[idx, t]
@@ -2184,7 +2184,7 @@ Query Plan
 =================================================
 |ID|OPERATOR       |NAME  |EST.ROWS|EST.TIME(us)|
 -------------------------------------------------
-|0 |TABLE FULL SCAN|t(idx)|3       |523         |
+|0 |TABLE FULL SCAN|t(idx)|1       |523         |
 =================================================
 Outputs & filters:
 -------------------------------------
@@ -2228,8 +2228,8 @@ Optimization Info:
       table_rows:14
       physical_range_rows:14
       logical_range_rows:14
-      index_back_rows:14
-      output_rows:3
+      index_back_rows:3
+      output_rows:0
       table_dop:1
       dop_method:Table DOP
       avaiable_index_name:[idx, t]
@@ -2245,7 +2245,7 @@ Query Plan
 =================================================
 |ID|OPERATOR       |NAME  |EST.ROWS|EST.TIME(us)|
 -------------------------------------------------
-|0 |TABLE FULL SCAN|t(idx)|2       |527         |
+|0 |TABLE FULL SCAN|t(idx)|1       |527         |
 =================================================
 Outputs & filters:
 -------------------------------------
@@ -2290,8 +2290,8 @@ Optimization Info:
       table_rows:14
       physical_range_rows:14
       logical_range_rows:14
-      index_back_rows:14
-      output_rows:2
+      index_back_rows:3
+      output_rows:0
       table_dop:1
       dop_method:Table DOP
       avaiable_index_name:[idx, t]
@@ -2307,7 +2307,7 @@ Query Plan
 =================================================
 |ID|OPERATOR       |NAME  |EST.ROWS|EST.TIME(us)|
 -------------------------------------------------
-|0 |TABLE FULL SCAN|t(idx)|6       |519         |
+|0 |TABLE FULL SCAN|t(idx)|1       |519         |
 =================================================
 Outputs & filters:
 -------------------------------------
@@ -2352,8 +2352,8 @@ Optimization Info:
       table_rows:14
       physical_range_rows:14
       logical_range_rows:14
-      index_back_rows:14
-      output_rows:6
+      index_back_rows:3
+      output_rows:0
       table_dop:1
       dop_method:Table DOP
       avaiable_index_name:[idx, t]
@@ -2369,7 +2369,7 @@ Query Plan
 =================================================
 |ID|OPERATOR       |NAME  |EST.ROWS|EST.TIME(us)|
 -------------------------------------------------
-|0 |TABLE FULL SCAN|t(idx)|2       |523         |
+|0 |TABLE FULL SCAN|t(idx)|1       |523         |
 =================================================
 Outputs & filters:
 -------------------------------------
@@ -2413,8 +2413,8 @@ Optimization Info:
       table_rows:14
       physical_range_rows:14
       logical_range_rows:14
-      index_back_rows:14
-      output_rows:2
+      index_back_rows:3
+      output_rows:0
       table_dop:1
       dop_method:Table DOP
       avaiable_index_name:[idx, t]
@@ -2430,7 +2430,7 @@ Query Plan
 =================================================
 |ID|OPERATOR       |NAME  |EST.ROWS|EST.TIME(us)|
 -------------------------------------------------
-|0 |TABLE FULL SCAN|t(idx)|3       |523         |
+|0 |TABLE FULL SCAN|t(idx)|1       |523         |
 =================================================
 Outputs & filters:
 -------------------------------------
@@ -2474,8 +2474,8 @@ Optimization Info:
       table_rows:14
       physical_range_rows:14
       logical_range_rows:14
-      index_back_rows:14
-      output_rows:3
+      index_back_rows:3
+      output_rows:0
       table_dop:1
       dop_method:Table DOP
       avaiable_index_name:[idx, t]
@@ -2491,7 +2491,7 @@ Query Plan
 =================================================
 |ID|OPERATOR       |NAME  |EST.ROWS|EST.TIME(us)|
 -------------------------------------------------
-|0 |TABLE FULL SCAN|t(idx)|4       |523         |
+|0 |TABLE FULL SCAN|t(idx)|1       |523         |
 =================================================
 Outputs & filters:
 -------------------------------------
@@ -2535,8 +2535,8 @@ Optimization Info:
       table_rows:14
       physical_range_rows:14
       logical_range_rows:14
-      index_back_rows:14
-      output_rows:4
+      index_back_rows:3
+      output_rows:0
       table_dop:1
       dop_method:Table DOP
       avaiable_index_name:[idx, t]
@@ -2552,7 +2552,7 @@ Query Plan
 =================================================
 |ID|OPERATOR       |NAME  |EST.ROWS|EST.TIME(us)|
 -------------------------------------------------
-|0 |TABLE FULL SCAN|t(idx)|4       |523         |
+|0 |TABLE FULL SCAN|t(idx)|1       |523         |
 =================================================
 Outputs & filters:
 -------------------------------------
@@ -2596,8 +2596,8 @@ Optimization Info:
       table_rows:14
       physical_range_rows:14
       logical_range_rows:14
-      index_back_rows:14
-      output_rows:4
+      index_back_rows:3
+      output_rows:0
       table_dop:1
       dop_method:Table DOP
       avaiable_index_name:[idx, t]
@@ -2659,8 +2659,8 @@ Optimization Info:
       table_rows:14
       physical_range_rows:14
       logical_range_rows:14
-      index_back_rows:14
-      output_rows:1
+      index_back_rows:3
+      output_rows:0
       table_dop:1
       dop_method:Table DOP
       avaiable_index_name:[idx, t]
@@ -2676,7 +2676,7 @@ Query Plan
 =================================================
 |ID|OPERATOR       |NAME  |EST.ROWS|EST.TIME(us)|
 -------------------------------------------------
-|0 |TABLE FULL SCAN|t(idx)|3       |523         |
+|0 |TABLE FULL SCAN|t(idx)|1       |523         |
 =================================================
 Outputs & filters:
 -------------------------------------
@@ -2720,8 +2720,8 @@ Optimization Info:
       table_rows:14
       physical_range_rows:14
       logical_range_rows:14
-      index_back_rows:14
-      output_rows:3
+      index_back_rows:3
+      output_rows:0
       table_dop:1
       dop_method:Table DOP
       avaiable_index_name:[idx, t]
@@ -2737,7 +2737,7 @@ Query Plan
 =================================================
 |ID|OPERATOR       |NAME  |EST.ROWS|EST.TIME(us)|
 -------------------------------------------------
-|0 |TABLE FULL SCAN|t(idx)|2       |527         |
+|0 |TABLE FULL SCAN|t(idx)|1       |527         |
 =================================================
 Outputs & filters:
 -------------------------------------
@@ -2782,8 +2782,8 @@ Optimization Info:
       table_rows:14
       physical_range_rows:14
       logical_range_rows:14
-      index_back_rows:14
-      output_rows:2
+      index_back_rows:3
+      output_rows:0
       table_dop:1
       dop_method:Table DOP
       avaiable_index_name:[idx, t]
@@ -2844,8 +2844,8 @@ Optimization Info:
       table_rows:14
       physical_range_rows:14
       logical_range_rows:14
-      index_back_rows:14
-      output_rows:1
+      index_back_rows:3
+      output_rows:0
       table_dop:1
       dop_method:Table DOP
       avaiable_index_name:[idx, t]
@@ -2861,7 +2861,7 @@ Query Plan
 =================================================
 |ID|OPERATOR       |NAME  |EST.ROWS|EST.TIME(us)|
 -------------------------------------------------
-|0 |TABLE FULL SCAN|t(idx)|2       |523         |
+|0 |TABLE FULL SCAN|t(idx)|1       |523         |
 =================================================
 Outputs & filters:
 -------------------------------------
@@ -2905,8 +2905,8 @@ Optimization Info:
       table_rows:14
       physical_range_rows:14
       logical_range_rows:14
-      index_back_rows:14
-      output_rows:2
+      index_back_rows:3
+      output_rows:0
       table_dop:1
       dop_method:Table DOP
       avaiable_index_name:[idx, t]
diff --git a/tools/deploy/mysql_test/test_suite/geometry/r/mysql/geometry_partition_table_mysql.result b/tools/deploy/mysql_test/test_suite/geometry/r/mysql/geometry_partition_table_mysql.result
index b3df8bab93..9a663bb42b 100644
--- a/tools/deploy/mysql_test/test_suite/geometry/r/mysql/geometry_partition_table_mysql.result
+++ b/tools/deploy/mysql_test/test_suite/geometry/r/mysql/geometry_partition_table_mysql.result
@@ -10,8 +10,8 @@ Query Plan
 ======================================================================
 |ID|OPERATOR                 |NAME             |EST.ROWS|EST.TIME(us)|
 ----------------------------------------------------------------------
-|0 |PX COORDINATOR           |                 |1       |291         |
-|1 |└─EXCHANGE OUT DISTR     |:EX10000         |1       |291         |
+|0 |PX COORDINATOR           |                 |1       |289         |
+|1 |└─EXCHANGE OUT DISTR     |:EX10000         |1       |289         |
 |2 |  └─PX PARTITION ITERATOR|                 |1       |289         |
 |3 |    └─TABLE FULL SCAN    |partition_t1(idx)|1       |289         |
 ======================================================================
@@ -61,10 +61,10 @@ Query Plan
 =============================================================
 |ID|OPERATOR                 |NAME    |EST.ROWS|EST.TIME(us)|
 -------------------------------------------------------------
-|0 |PX COORDINATOR           |        |10      |565         |
-|1 |└─EXCHANGE OUT DISTR     |:EX10000|10      |558         |
-|2 |  └─PX PARTITION ITERATOR|        |10      |542         |
-|3 |    └─TABLE FULL SCAN    |t1(idx) |10      |542         |
+|0 |PX COORDINATOR           |        |1       |543         |
+|1 |└─EXCHANGE OUT DISTR     |:EX10000|1       |542         |
+|2 |  └─PX PARTITION ITERATOR|        |1       |541         |
+|3 |    └─TABLE FULL SCAN    |t1(idx) |1       |541         |
 =============================================================
 Outputs & filters:
 -------------------------------------
diff --git a/tools/deploy/mysql_test/test_suite/geometry/t/geometry_bugfix_mysql.test b/tools/deploy/mysql_test/test_suite/geometry/t/geometry_bugfix_mysql.test
index 03c5c9a27a..2094833ac3 100644
--- a/tools/deploy/mysql_test/test_suite/geometry/t/geometry_bugfix_mysql.test
+++ b/tools/deploy/mysql_test/test_suite/geometry/t/geometry_bugfix_mysql.test
@@ -334,10 +334,10 @@ INSERT INTO t1 (g) VALUES
   (ST_GeomFromText('POINT(7 7)', 3294)),
   (ST_GeomFromText('LINESTRING(0 0, 3 3)',3294));
 
-explain select st_astext(a.g), st_astext(b.g) from t1 a join t1 b where _st_covers(a.g, b.g);
-explain select st_astext(a.g), st_astext(b.g) from t1 a join t1 b where st_contains(a.g, b.g);
-explain select st_astext(a.g), st_astext(b.g) from t1 a join t1 b where st_within(a.g, b.g);
-explain select st_astext(a.g), st_astext(b.g) from t1 a join t1 b where _st_dwithin(a.g, b.g, 0.1);
+explain select /*+dynamic_sampling(1)*/st_astext(a.g), st_astext(b.g) from t1 a join t1 b where _st_covers(a.g, b.g);
+explain select /*+dynamic_sampling(1)*/st_astext(a.g), st_astext(b.g) from t1 a join t1 b where st_contains(a.g, b.g);
+explain select /*+dynamic_sampling(1)*/st_astext(a.g), st_astext(b.g) from t1 a join t1 b where st_within(a.g, b.g);
+explain select /*+dynamic_sampling(1)*/st_astext(a.g), st_astext(b.g) from t1 a join t1 b where _st_dwithin(a.g, b.g, 0.1);
 
 select st_astext(a.g), st_astext(b.g) from t1 a join t1 b where _st_covers(a.g, b.g);
 select st_astext(a.g), st_astext(b.g) from t1 a join t1 b where st_contains(a.g, b.g);