diff --git a/src/sql/engine/expr/ob_expr_div.cpp b/src/sql/engine/expr/ob_expr_div.cpp
index c826204d2..c6f0b906e 100644
--- a/src/sql/engine/expr/ob_expr_div.cpp
+++ b/src/sql/engine/expr/ob_expr_div.cpp
@@ -403,7 +403,6 @@ int ObExprDiv::div_interval(
   res.set_scale(ObAccuracy::MAX_ACCURACY2[ORACLE_MODE][res.get_type()].get_scale());
   UNUSED(calc_scale);
   return ret;
-  return ret;
 }
 
 const ObScale ObExprDiv::DIV_CALC_SCALE = 9;
diff --git a/src/sql/engine/expr/ob_expr_func_part_hash.cpp b/src/sql/engine/expr/ob_expr_func_part_hash.cpp
index 56f57651d..07916eef2 100644
--- a/src/sql/engine/expr/ob_expr_func_part_hash.cpp
+++ b/src/sql/engine/expr/ob_expr_func_part_hash.cpp
@@ -574,15 +574,18 @@ int ObExprFuncPartHash::calc_oracle_vt_part_id(ObTaskExecutorCtx& task_exec_ctx,
   } else {
     ObString ip = objs_stack[0].get_string();
     number::ObNumber port_num;
-    objs_stack[1].get_number(port_num);
-    int32_t port = atoi(port_num.format());
-    ObAddr addr;
-    addr.set_ip_addr(ip, port);
-    int64_t part_id = OB_INVALID_ID;
-    if (OB_FAIL(task_exec_ctx.calc_virtual_partition_id(table_id, addr, part_id))) {
-      LOG_WARN("calculate virtual table partition id failed", K(table_id), K(addr));
+    if (OB_FAIL(objs_stack[1].get_number(port_num))) {
+      LOG_WARN("Get port_number failed.", K(ret));
     } else {
-      result.set_int(part_id);
+      int32_t port = atoi(port_num.format());
+      ObAddr addr;
+      addr.set_ip_addr(ip, port);
+      int64_t part_id = OB_INVALID_ID;
+      if (OB_FAIL(task_exec_ctx.calc_virtual_partition_id(table_id, addr, part_id))) {
+        LOG_WARN("calculate virtual table partition id failed", K(table_id), K(addr));
+      } else {
+        result.set_int(part_id);
+      }
     }
   }
   return ret;
diff --git a/src/sql/engine/expr/ob_expr_in.h b/src/sql/engine/expr/ob_expr_in.h
index 36576d0da..f60ec3235 100644
--- a/src/sql/engine/expr/ob_expr_in.h
+++ b/src/sql/engine/expr/ob_expr_in.h
@@ -182,6 +182,7 @@ class ObExprInOrNotIn : public ObVectorExprOperator {
   public:
     ObExprInCtx()
         : ObExprOperatorCtx(),
+          row_dimension_(-1),
           right_has_null(false),
           hash_func_buff_(NULL),
           funcs_ptr_set(false),
diff --git a/src/sql/engine/expr/ob_expr_least.cpp b/src/sql/engine/expr/ob_expr_least.cpp
index 3caf691cc..ec7d884ec 100644
--- a/src/sql/engine/expr/ob_expr_least.cpp
+++ b/src/sql/engine/expr/ob_expr_least.cpp
@@ -45,61 +45,56 @@ int ObExprBaseLeastGreatest::calc_result_typeN_oracle(
     ret = OB_INVALID_ARGUMENT;
     LOG_WARN("types is null or param_num is wrong", K(types), K(param_num), K(ret));
   } else {
-    if (OB_ISNULL(types) || OB_UNLIKELY(param_num < 1)) {
-      ret = OB_INVALID_ARGUMENT;
-      LOG_WARN("types is null or param_num is wrong", K(types), K(param_num), K(ret));
+    ObExprResType& first_type = types[0];
+    type = first_type;
+    if (ObIntTC == first_type.get_type_class() || ObUIntTC == first_type.get_type_class() ||
+        ObNumberTC == first_type.get_type_class()) {
+      type.set_type(ObNumberType);
+      type.set_calc_type(ObNumberType);
+      type.set_scale(ORA_NUMBER_SCALE_UNKNOWN_YET);
+      type.set_precision(PRECISION_UNKNOWN_YET);
+    } else if (ObLongTextType == type.get_type()) {
+      ret = OB_ERR_INVALID_TYPE_FOR_OP;
+      LOG_WARN("lob type parameter not expected", K(ret));
     } else {
-      ObExprResType& first_type = types[0];
-      type = first_type;
-      if (ObIntTC == first_type.get_type_class() || ObUIntTC == first_type.get_type_class() ||
-          ObNumberTC == first_type.get_type_class()) {
-        type.set_type(ObNumberType);
-        type.set_calc_type(ObNumberType);
-        type.set_scale(ORA_NUMBER_SCALE_UNKNOWN_YET);
-        type.set_precision(PRECISION_UNKNOWN_YET);
-      } else if (ObLongTextType == type.get_type()) {
-        ret = OB_ERR_INVALID_TYPE_FOR_OP;
-        LOG_WARN("lob type parameter not expected", K(ret));
-      } else {
-        type.set_type(first_type.get_type());
-        type.set_calc_type(first_type.get_type());
-      }
+      type.set_type(first_type.get_type());
+      type.set_calc_type(first_type.get_type());
+    }
 
-      if (ObStringTC == type.get_type_class()) {
-        int64_t max_length = 0;
-        int64_t all_char = 0;
-        for (int64_t i = 0; OB_SUCC(ret) && i < param_num; i++) {
-          int64_t item_length = 0;
-          if (ObStringTC == types[i].get_type_class() || ObLongTextType == types[i].get_type()) {
-            item_length = types[i].get_length();
-            if (LS_CHAR == types[i].get_length_semantics()) {
-              item_length = item_length * 4;
-              all_char++;
-            }
-          } else if (ObNumberTC == types[i].get_type_class() || ObIntTC == types[i].get_type_class() ||
-                     ObUIntTC == types[i].get_type_class()) {
-            item_length = number::ObNumber::MAX_PRECISION - number::ObNumber::MIN_SCALE;
-          } else if (ObOTimestampTC == types[i].get_type_class() || ObFloatTC == types[i].get_type_class() ||
-                     ObDoubleTC == types[i].get_type_class() || ObNullTC == types[i].get_type_class()) {
-            item_length = 40;
-          } else if (ObDateTimeTC == types[i].get_type_class()) {
-            item_length = 19;
-          } else {
-            ret = OB_NOT_SUPPORTED;
-            LOG_WARN("unsupported type", K(ret), K(types[i]), K(types[i].get_type_class()));
-          }
-
-          if (OB_SUCC(ret)) {
-            max_length = MAX(max_length, item_length);
+    if (ObStringTC == type.get_type_class()) {
+      int64_t max_length = 0;
+      int64_t all_char = 0;
+      for (int64_t i = 0; OB_SUCC(ret) && i < param_num; i++) {
+        int64_t item_length = 0;
+        if (ObStringTC == types[i].get_type_class() || ObLongTextType == types[i].get_type()) {
+          item_length = types[i].get_length();
+          if (LS_CHAR == types[i].get_length_semantics()) {
+            item_length = item_length * 4;
+            all_char++;
           }
+        } else if (ObNumberTC == types[i].get_type_class() || ObIntTC == types[i].get_type_class() ||
+                    ObUIntTC == types[i].get_type_class()) {
+          item_length = number::ObNumber::MAX_PRECISION - number::ObNumber::MIN_SCALE;
+        } else if (ObOTimestampTC == types[i].get_type_class() || ObFloatTC == types[i].get_type_class() ||
+                    ObDoubleTC == types[i].get_type_class() || ObNullTC == types[i].get_type_class()) {
+          item_length = 40;
+        } else if (ObDateTimeTC == types[i].get_type_class()) {
+          item_length = 19;
+        } else {
+          ret = OB_NOT_SUPPORTED;
+          LOG_WARN("unsupported type", K(ret), K(types[i]), K(types[i].get_type_class()));
         }
+
         if (OB_SUCC(ret)) {
-          if (all_char == param_num) {
-            type.set_length(static_cast<ObLength>(max_length / 4));
-            type.set_length_semantics(LS_CHAR);
-          } else {
-            type.set_length(static_cast<ObLength>(max_length));
-          }
+          max_length = MAX(max_length, item_length);
+        }
+      }
+      if (OB_SUCC(ret)) {
+        if (all_char == param_num) {
+          type.set_length(static_cast<ObLength>(max_length / 4));
+          type.set_length_semantics(LS_CHAR);
+        } else {
+          type.set_length(static_cast<ObLength>(max_length));
         }
       }
     }