code: public void parse(final InsertStatement insertStatement, final ShardingTableMetaData shardingTableMetaData) {
          String tableName = insertStatement.getTables().getSingleTableName();
          insertStatement.getColumnNames().addAll(lexerEngine.equalAny(Symbol.LEFT_PAREN)
                  ? parseWithColumn(insertStatement) : parseWithoutColumn(shardingTableMetaData, tableName));
      }
docs: Parse insert columns.
  
  @param insertStatement insert statement
  @param shardingTableMetaData sharding table meta data