He first say *in an SQL query* then later ask for *in a full PL/SQL procedu*, I dont know what to think.. did you mean a procedure that use an sql query to determine wether or not a given column exists in a table ?
Maybe he wanted Tony to write a query for him; I mean, what kind of an answer was this in post #2? "Look in" ... it isn't that easy; requires a little bit of typing abilities along with clear visibility between the eyes and the screen, energy comparable with feeding your mouth with 7 soup spoons, dragon's breath, bat's nail and snail's scent. And - voila! The query is ready to use!