Some people would argue that defining a primary key to be 'NOT NULL' is redundant as well, so a statement without it should be considered the same. (I'm not sure if that's a function of the database, though, which might introduce extra complexity).

PS. back when I took Oracle's SQL Tuning class (back in 2001 or so), we were told that the caching only worked for exact string matches -- any whitespace or capitalization changes would be considered a different query to the optimizer.

In reply to Re^2: Whitespace issues in testing by jhourcle
in thread Whitespace issues in testing by Ovid

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