通过脚本创建关系图

问题描述

我有一个很长的脚本，需要进行大量的计算，我想跟踪它们的起源列。例如，下面示例中的表z中的“ identifier”和“ concat_var”列。我可以以某种方式“自动”执行此操作并以图形显示吗？

-- borrowed from https://stackoverflow.com/q/7745609/808921

CREATE TABLE IF NOT EXISTS `docs` (
  `id` int(6) unsigned NOT NULL,`rev` int(3) unsigned NOT NULL,`content` varchar(200) NOT NULL,PRIMARY KEY (`id`,`rev`)
) DEFAULT CHARSET=utf8;
INSERT INTO `docs` (`id`,`rev`,`content`) VALUES
  ('1','1','The earth is flat'),('2','One hundred angels can dance on the head of a pin'),('1','2','The earth is flat and rests on a bull\'s horn'),'3','The earth is like a ball.');

CREATE TABLE x (
  SELECT * FROM docs WHERE rev = 1);
  
  CREATE TABLE y (
    SELECT * FROM docs WHERE rev != 1);

CREATE TABLE z (
  SELECT
    CONCAT(a.content,' - ',b.content) AS concat_var,a.id AS identifier
  FROM
    x AS a
   INNER JOIN
     y AS b
    ON
      a.id = b.id);

解决方法

市场上很少有这样做的产品： https://dbmstools.com/categories/data-dictionary-tools/redshift

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