sql - 如何在postgresql中查找具有特定列的表

Question

我正在使用 PostgreSQL 9.1。我有一个表的列名。是否可以找到具有/具有此列的表？如果是这样，怎么做？

Answer 1

你也可以做

 select table_name from information_schema.columns where column_name = 'your_column_name'

Answer 2

您可以查询系统目录：

select c.relname
from pg_class as c
    inner join pg_attribute as a on a.attrelid = c.oid
where a.attname = <column name> and c.relkind = 'r'

sql fiddle demo

Answer 3

我使用@Roman Pekar 的查询作为基础并添加了模式名称（在我的情况下相关）

select n.nspname as schema ,c.relname
    from pg_class as c
    inner join pg_attribute as a on a.attrelid = c.oid
    inner join pg_namespace as n on c.relnamespace = n.oid
where a.attname = 'id_number' and c.relkind = 'r'

sql fiddle demo

Answer 4

简单地：

$ psql mydatabase -c '\d *' | grep -B10 'mycolname'

如果需要，放大 -B 偏移量以获取表名

Answer 5

通配符支持 查找包含您要查找的字符串的表架构和表名。

select t.table_schema,
       t.table_name
from information_schema.tables t
inner join information_schema.columns c on c.table_name = t.table_name
                                and c.table_schema = t.table_schema
where c.column_name like '%STRING%'
      and t.table_schema not in ('information_schema', 'pg_catalog')
      and t.table_type = 'BASE TABLE'
order by t.table_schema;

Answer 6

select t.table_schema,
       t.table_name
from information_schema.tables t
inner join information_schema.columns c on c.table_name = t.table_name 
                                and c.table_schema = t.table_schema
where c.column_name = 'name_colum'
      and t.table_schema not in ('information_schema', 'pg_catalog')
      and t.table_type = 'BASE TABLE'
order by t.table_schema;