postgresql: alter multiple columns

Question

My database has severals table with some column type 'money'. I would like to alter all these columns (in different tables) in a single statement rather than change type column by column, to avoid omissions.

Answer 1

You'll have to repeat the altering query for every column.
You might want to create a program code to do that for you. You know, with loops.

In order for the database to alter all the tables atomically you should enclose all the altering queries in a transaction (PostgreSQL supports transactional DDL ).