How to describe table in SQL Oracle, I tried desc and describe, but it says desc not supported. I also tried mysql syntax show columns from table, but show is also unsupported?
You don't say what UI you are using, but
DESC works in all of them that I know of. If it doesn't
SELECT * FROM ALL_TAB_COLUMNS WHERE TABLE_NAME = 'MY_TABLE' AND OWNER = 'MY_SCHEMA';
is an alternative for getting the same information.