如何找到一个表有一个特定的列 postgreql

我正在使用 PostgreSQL 9.1。我有一个表的列名。有没有可能找到包含/有这个列的表？如果是这样，怎么做？

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最佳答案

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

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你也可以

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

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我使用了@Roman Pekar 的查询作为基础，并添加了模式名(在我的例子中是相关的)

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

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简单来说:

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

如果需要，放大 -B 偏移量以获取表名

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通配符支持查找包含要查找的字符串的表架构和表名称。

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;

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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;