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                #### 比較運算符(>、>=、<、<=、=、!=、<>) 通常是用來在條件中進行限定結果. 語法 : ~~~ select * from 表名 where 條件 比較運算符 value; ~~~ 特殊應用 : ~~~ select 1 > 0 //結果是 1 . mysql 中沒有規定必須要有數據源 ~~~ 在條件判斷的時候,還有有對應的比較運算符:計算區間. 語法 : ~~~ select * from 表名 where 字段 between 條件1 and 條件2 ; //條件1必須小于條件2 ~~~
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