docs: public Optional<ColumnDefinitionSegment> findColumnDefinition(final String columnName, final ShardingTableMetaData shardingTableMetaData) {
          Optional<ColumnDefinitionSegment> result = findColumnDefinitionFromMetaData(columnName, shardingTableMetaData);
          return result.isPresent() ? result : findColumnDefinitionFromCurrentAddClause(columnName);
      }