列出Amazon Redshift中具有索引的列

Question

我需要查询Redshift元数据以获取表列的列表，其中包括该列是否为主键的信息。

有一个帖子已名单列在PostgreSQL的指标有PostgreSQL的答案，然而不幸的是，它没有在红移“错误：42809：OP任何/所有（阵列）需要在右侧阵”

Answer 1

我想出了如何在此https://bitbucket.org/zzzeek/sqlalchemy/pull-request/6/sqlalchemy-to-support-postgresql-80/diff的帮助下进行操作

SELECT attname column_name, attnotnull, 
  format_type(atttypid, atttypmod) as column_type, atttypmod,
  i.indisprimary as primary_key,
  col_description(attrelid, attnum) as description
FROM pg_attribute c
  LEFT OUTER JOIN pg_index i
  ON c.attrelid = i.indrelid AND i.indisprimary AND
  c.attnum = ANY(string_to_array(textin(int2vectorout(i.indkey)), ' '))
where c.attnum > 0 AND NOT c.attisdropped AND c.attrelid = :tableOid
order by attnum