fix cases master

src/sql/engine/expr/ob_expr_operator.cpp

@@ -3096,6 +3096,12 @@ void ObStringExprOperator::calc_temporal_format_result_length(
     type.set_varchar();
     type.set_length(MAX_VARCHAR_BUFFER_SIZE);
   }
+  if (is_mysql_mode() && ob_is_text_tc(type.get_type())) {
+    const int32_t mbmaxlen = 4;
+    const int32_t default_text_length = ObAccuracy::DDL_DEFAULT_ACCURACY[type.get_type()].get_length() / mbmaxlen;
+    // need to set a correct length for text tc in mysql mode
+    type.set_length(default_text_length);
+  }
 }
 
 ObObjType ObStringExprOperator::get_result_type_mysql(int64_t char_length) const

src/sql/resolver/ddl/ob_ddl_resolver.cpp

@@ -2960,7 +2960,7 @@ int ObDDLResolver::check_text_length(ObCharsetType cs_type, ObCollationType co_t
   } else if (0 == mbmaxlen) {
     ret = OB_ERR_UNEXPECTED;
     SQL_RESV_LOG(ERROR, "mbmaxlen can not be 0", K(ret), K(co_type), K(mbmaxlen));
-  } else if (0 == length) {
+  } else if (share::is_oracle_mode() || 0 == length) {
     length = default_length;
   } else if (0 > length) {
     ret = OB_ERR_TOO_LONG_COLUMN_LENGTH;