Get a list of available columns from Extended table

[whitewalker]

Hello.

I have some columns in a table (ParentTable). It is used as parent table for some other tables (Child1, Child2, ...).

How can I get in 1 request all column name from child table and in parent table ?

When opening System Definition -> Tables -> Child2, Table Columns is showing columns from both child and parent tables, but when using GlideRecord("sys_dictionary"), it is showing only columns from child table.

[whitewalker]

I need column names and labels available from both parent and child tables.