Hubert 'depesz' Lubaczewski：如何获取一行及其所有依赖项？
This question was asked at least twice on some support channel. Getting a row is trivial: select * from table where id = ?. But what about dependencies – the rows that this exported row...
通过创建函数export_row、get_row_data和export_data，可以实现从多个表中导出数据，并且可以跟踪单列的外键，可以下载所有函数文件，使用起来方便快捷。
