關於select的性能：post刪除或截斷表？

Question

如果我使用delete從表中刪除數據，那麼select查詢的性能是否會下降？如果使用truncate清除整個表，並刪除所選行，是否會有性能差異？

Answer 1

http://dev.mysql.com/doc/refman/5.1/en/truncate-table.html

Truncate operations drop and re-create the table, which is much faster than deleting rows one by one, particularly for large tables. 

也：http://www.softstuff-consulting.com/kbase/showkb.asp?id=15