This is rather a very simple question to all--I just got back to Oracle after a long time. The question is how do I resize the columns in a given table? I need the syntax of the command, please.
This is a pretty easy one. The only catch is that you need to "modify" the existing columns. Let's assume that I'm going to resize the NAME column of the EMPLOYEE table to 50 characters. For that, I'll use the following command:
ALTER TABLE employee MODIFY (name VARCHAR2(50));
The only big caveat is that you cannot resize a column smaller than its longest element. For instance, if the NAME column contained a name that was 30 characters in length, then you cannot make the column 25 characters. You will receive an error.
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