Get the default values of table columns in Postgres?

Question

I\'m looking for a way to run a query to find the default values of the columns of a table in Postgres. For example, if I made a table with the following query:

Answer 1

 SELECT adsrc as default_value
 FROM pg_attrdef pad, pg_atttribute pat, pg_class pc
 WHERE pc.relname='your_table_name'
     AND pc.oid=pat.attrelid AND pat.attname='your_column_name'
     AND pat.attrelid=pad.adrelid AND pat.attnum=pad.adnum

I found this query for postgresql on one of the blogs. you can try this to check if it works. To get values of all coumns, you can try removing AND pat.attname='your_column_name' from where clause.