between and

between and在查询语句中用于表示一个闭区间，包括边界的比较值。它的含义是介于两个值之间，包括这两个值在内。在查询效率上，between and和&lt;=和&gt;=是等效的，没有区别。如果想要包含边界的比较值，可以在条件中使用等于号。如果只想包含一个边界，可以在想要包含的那个边界上加上等于号。如果都不想包含边界的比较值，则不需要加等于号。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
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