查询数据库中的所有表

Question

I am surely just askewing my and statement here. I want to get a list of all tables that meet both conditions (but it returns 0). If I run each statement individually they each return multiple tables, but adding the and into the query 0 tables are returned (which I know is incorrect). What do I need to change to get this to execute successfully?

Works

select 
    table_name, column_name
from  
    information_schema.columns 
where 
    column_name ILIKE 'Man%'

Works

select 
    table_name, column_name
from 
    information_schema.columns 
where 
    column_name ILIKE 'sale%'

Returns 0 results

select 
    table_name, column_name
from 
    information_schema.columns 
where 
    (column_name ILIKE 'man%'
     and column_name ILIKE 'sale%')
order by 
    table_name asc

I want to return tables that have a column that begins with man AND a column that begins with sale only. Is there a way to achieve this result?

Answer 1

You could do something like this

select a.table_name,a.column_Name,b.column_Name from 
(select table_name, column_name
from information_schema.columns 
where column_name ILIKE 'Man%') a,
(select table_name, column_name
from information_schema.columns 
where column_name ILIKE 'sale%')b
where a.table_name=b.table_name
order by a.table_name asc

Answer 2

As I said, I'm not familiar with postgresql so this may not work. :)

select a.table_name, a.column_name, b.column_name
from information_schema.columns a
join information_schema.columns b on a.table_name=b.table_name
where (a.column_name ILIKE 'man%'
AND b.column_name ILIKE 'sale%')
ORDER BY table_name ASC