fix sql_statistics bug

src/sql/resolver/cmd/ob_load_data_resolver.cpp

@@ -528,6 +528,18 @@ int ObLoadDataResolver::resolve_hints(const ParseNode &node)
         }
         break;
       }
+      case T_APPEND: {
+        if (OB_FAIL(stmt_hints.set_value(ObLoadDataHint::APPEND, 1))) {
+          LOG_WARN("fail to set append", K(ret));
+        }
+        break;
+      }
+      case T_GATHER_OPTIMIZER_STATISTICS: {
+        if (OB_FAIL(stmt_hints.set_value(ObLoadDataHint::GATHER_OPTIMIZER_STATISTICS, 1))) {
+          LOG_WARN("fail to set gather optimizer statistics", K(ret));
+        }
+        break;
+      }
       default:
         ret = OB_ERR_HINT_UNKNOWN;
         LOG_WARN("Unknown hint", "hint_name", get_type_name(hint_node->type_));

src/sql/resolver/cmd/ob_load_data_stmt.h

@@ -180,9 +180,11 @@ public:
     PARALLEL_THREADS = 0,  //parallel threads on the host server, for parsing and calc partition
     BATCH_SIZE,
     QUERY_TIMEOUT,
+    APPEND,
     ENABLE_DIRECT,
     NEED_SORT,
     ERROR_ROWS,
+    GATHER_OPTIMIZER_STATISTICS,
     TOTAL_INT_ITEM
   };
   enum StringHintItem {