| import{_ as e,o as a,c as t,a as n,f as s}from"./app-601a6ddd.js";const o={},r=s(`<h1 id="logical-operators" tabindex="-1"><a class="header-anchor" href="#logical-operators" aria-hidden="true">#</a> Logical Operators</h1><h2 id="unary-logical-operators" tabindex="-1"><a class="header-anchor" href="#unary-logical-operators" aria-hidden="true">#</a> Unary Logical Operators</h2><p>Supported operator <code>!</code></p><p>Supported input data types: <code>BOOLEAN</code></p><p>Output data type: <code>BOOLEAN</code></p><p>Hint: the priority of <code>!</code> is the same as <code>-</code>. Remember to use brackets to modify priority.</p><h2 id="binary-logical-operators" tabindex="-1"><a class="header-anchor" href="#binary-logical-operators" aria-hidden="true">#</a> Binary Logical Operators</h2><p>Supported operators AND:<code>and</code>,<code>&</code>, <code>&&</code>; OR:<code>or</code>,<code>|</code>,<code>||</code></p><p>Supported input data types: <code>BOOLEAN</code></p><p>Output data type: <code>BOOLEAN</code></p><p>Note: Only when the left operand and the right operand under a certain timestamp are both <code>BOOLEAN</code> type, the binary logic operation will have an output value.</p><p><strong>Example:</strong></p><div class="language-sql line-numbers-mode" data-ext="sql"><pre class="language-sql"><code><span class="token keyword">select</span> a<span class="token punctuation">,</span> b<span class="token punctuation">,</span> a <span class="token operator">></span> <span class="token number">10</span><span class="token punctuation">,</span> a <span class="token operator"><=</span> b<span class="token punctuation">,</span> <span class="token operator">!</span><span class="token punctuation">(</span>a <span class="token operator"><=</span> b<span class="token punctuation">)</span><span class="token punctuation">,</span> a <span class="token operator">></span> <span class="token number">10</span> <span class="token operator">&&</span> a <span class="token operator">></span> b <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">;</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>运行结果</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>IoTDB> select a, b, a > 10, a <= b, !(a <= b), a > 10 && a > b from root.test; |
| +-----------------------------+-----------+-----------+----------------+--------------------------+---------------------------+------------------------------------------------+ |
| | Time|root.test.a|root.test.b|root.test.a > 10|root.test.a <= root.test.b|!root.test.a <= root.test.b|(root.test.a > 10) & (root.test.a > root.test.b)| |
| +-----------------------------+-----------+-----------+----------------+--------------------------+---------------------------+------------------------------------------------+ |
| |1970-01-01T08:00:00.001+08:00| 23| 10.0| true| false| true| true| |
| |1970-01-01T08:00:00.002+08:00| 33| 21.0| true| false| true| true| |
| |1970-01-01T08:00:00.004+08:00| 13| 15.0| true| true| false| false| |
| |1970-01-01T08:00:00.005+08:00| 26| 0.0| true| false| true| true| |
| |1970-01-01T08:00:00.008+08:00| 1| 22.0| false| true| false| false| |
| |1970-01-01T08:00:00.010+08:00| 23| 12.0| true| false| true| true| |
| +-----------------------------+-----------+-----------+----------------+--------------------------+---------------------------+------------------------------------------------+ |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div>`,15);function i(p,c){return a(),t("div",null,[n(` |
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| `),r])}const l=e(o,[["render",i],["__file","Logical.html.vue"]]);export{l as default}; |
