Re: VARCHAR2(1) vs CHAR(1)

Hi,

you should use char type if you need to store 1 or 2 char in the field. Consider that varchar types need, phisically, more information than a simple char type (such as size).
If you know that the field always contains null or 1 character (null or 2 characters for char(2)), char is the cheapest and fast solution. "Fast" include the more speed than the DBMS need to organize and manage a char data, because it always know the exact size and never need to calculate it.

Marco Received on Sun Jul 28 2002 - 05:10:14 CDT