Hello all,

I wanted to know why a select query takes ,say, 18 sec to execute the first 
time I execute it and then for every successive execution it takes, say, 10 sec.

I have disabled Query Caching on the server. If its not Query Caching then what 
else is causing this variation in exec time?

1) Also i would like to know something about table caching (what exactly gets 
cached here?) and its advantages

2) What is an optimal join order. Should it be a smaller result joined with a 
bigger one or vice-versa, Or how does MySQL do it?


Thanks,

Ratheesh Bhat K J

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