backup-core/src/main/java/org/apache/iotdb/backup/core/pipeline/in/source/InSqlDataSource.java [233:257]:
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            } else {
              if (i != arr.length - 1) {
                buffer.append(arr[i]);
              }
              formatedSql.append(buffer);
            }

            buffer.delete(0, buffer.length());
          }
        } else {
          if (!Pattern.matches(regx, buffer.toString())
              || IotDBKeyWords.validateKeyWords(buffer.toString().toUpperCase())) {
            buffer.append("`").append(arr[i]).append("`");
          } else if (Pattern.matches(regxOnlyNum, buffer.toString())) {
            buffer.append("`").append(arr[i]).append("`");
          } else {
            buffer.append(arr[i]);
          }
        }
      } else {
        buffer.append(arr[i]);
      }
    }
    formatedSql.append(buffer);
    return formatedSql.toString();
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backup-core/src/main/java/org/apache/iotdb/backup/core/service/ExportPipelineService.java [656:680]:
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            } else {
              if (i != arr.length - 1) {
                buffer.append(arr[i]);
              }
              formatedSql.append(buffer);
            }

            buffer.delete(0, buffer.length());
          }
        } else {
          if (!Pattern.matches(regx, buffer.toString())
              || IotDBKeyWords.validateKeyWords(buffer.toString().toUpperCase())) {
            buffer.append("`").append(arr[i]).append("`");
          } else if (Pattern.matches(regxOnlyNum, buffer.toString())) {
            buffer.append("`").append(arr[i]).append("`");
          } else {
            buffer.append(arr[i]);
          }
        }
      } else {
        buffer.append(arr[i]);
      }
    }
    formatedSql.append(buffer);
    return formatedSql.toString();
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