How to find a table having a specific column in postgresql
SqlDatabasePostgresqlPostgresql 9.1Sql Problem Overview
I'm using PostgreSQL 9.1. I have the column name of a table. Is it possible to find the table(s) that has/have this column? If so, how?
Sql Solutions
Solution 1 - Sql
You can also do
select table_name from information_schema.columns where column_name = 'your_column_name'
Solution 2 - Sql
you can query system catalogs:
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'
Solution 3 - Sql
I've used the query of @Roman Pekar as a base and added schema name (relevant in my case)
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'
Solution 4 - Sql
Simply:
$ psql mydatabase -c '\d *' | grep -B10 'mycolname'
Enlarge -B offset to get table name, if need
Solution 5 - Sql
Wildcard Support Find the table schema and table name that contains the string you want to find.
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;
Solution 6 - Sql
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;