Mysql where '字符串' 條件細節

原創 未来无限 2020-02-22 11:50

實際上在執行where 條件的時候 無論where後面的整體是什麼,最後的結果都強轉成了數字(強轉規則就是上面的) 然後通過轉的數字跟0作爲比較,如果是等於0則結果爲0 即false ,如果不爲0 結果爲1 即true ,所以 where 的是true 還是 false 你還不明白嗎?!

原文鏈接：https://blog.csdn.net/qq_40081976/article/details/83418691

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