skewed histogram 中文意思是什麼

skewed histogram 解釋
偏態直方圖
  1. If you a have a column that has a skewed data distribution, a histogram on it and if you are using bind variables against that column you may suffer from the same problem

    大致意思是,綁定變量的窺視,在你的某欄位有不均衡的數據分佈,又有柱狀圖的情況下,首次執行的語句生成了對其有利的執行計劃,它會將計劃帶個所有後面的語句,不管後面語句的執行時間會花費多久
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