How to search all Tables for a column name in PostgreSQL

We’ve all been in the situation of having a chaotic database and trying to find the data that we will need in it. There is a very useful script that allows us to search for a column name in all the tables of our database.

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 = 'column_name'
      and t.table_schema not in ('information_schema', 'pg_catalog')
      and t.table_type = 'BASE TABLE'
order by t.table_schema;

table_schema       table_name 
test_database	   sample_table 

From the results, you now know that in the table “sample_table” there is a column named “column_name”.
You can even use like:

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 '%column_name%'
      and t.table_schema not in ('information_schema', 'pg_catalog')
      and t.table_type = 'BASE TABLE'
order by t.table_schema;

table_schema       table_name 
test_database	   sample_table1
test_database	   sample_table2