On 8 May 2009, at 20:13, J. Landman Gay wrote:
Scott Rossi wrote:
Recently, J. Landman Gay wrote:
if literal names are not quoted, the engine takes twice as long to
execute the
statement because of the additional lookup.
Jacque, is this really true?
I confess I made up the "twice as long" part, I don't really have
any hard numbers on the increase.
I do. :-)
I've held the same belief as yourself. It looks like we're wrong. On
my machine (an intel mac)), 100,000 accesses of a field (get field
whatever) takes about 95ms for both quoted and unquoted field names.
(The field contains about 140 characters) Actually, on average, using
a quoted name takes about 2ms longer (for 100,000 accesses). Accessing
the field by its number takes about 85 ms. And by its ID takes about
80ms.
Knowledge is power. I bet Bill Gates doesn't know this.
Cheers
Dave
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