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| <div class="tex2jax_ignore mathjax_ignore section" id="limit"> |
| <h1>LIMIT<a class="headerlink" href="#limit" title="Permalink to this headline">¶</a></h1> |
| <p>LIMIT constrains the number of records in the output.</p> |
| <div class="section" id="introduction"> |
| <h2>Introduction<a class="headerlink" href="#introduction" title="Permalink to this headline">¶</a></h2> |
| <p>LIMIT accepts any expression that evaluates to a positive integer.</p> |
| </div> |
| <div class="section" id="return-a-subset-of-the-rows"> |
| <h2>Return a subset of the rows<a class="headerlink" href="#return-a-subset-of-the-rows" title="Permalink to this headline">¶</a></h2> |
| <p>To return a subset of the result, starting from the top, use this syntax:</p> |
| <p>Query</p> |
| <div class="highlight-default notranslate"><div class="highlight"><pre><span></span>SELECT * |
| FROM cypher('graph_name', $$ |
| MATCH (n)RETURN n.name |
| ORDER BY n.name |
| LIMIT 3 |
| $$) as (names agtype); |
| </pre></div> |
| </div> |
| <p>The node is returned, and no property age exists on it.</p> |
| <p>Result</p> |
| <table> |
| <thead> |
| <td><strong>names</strong> |
| </td> |
| <thead> |
| <tr> |
| <td>"A" |
| </td> |
| </tr> |
| <tr> |
| <td>"B" |
| </td> |
| </tr> |
| <tr> |
| <td>"C" |
| </td> |
| </tr> |
| <tr> |
| <td>3 rows |
| </td> |
| </tr> |
| </table> |
| </div> |
| <div class="section" id="using-an-expression-with-limit-to-return-a-subset-of-the-rows"> |
| <h2>Using an expression with LIMIT to return a subset of the rows<a class="headerlink" href="#using-an-expression-with-limit-to-return-a-subset-of-the-rows" title="Permalink to this headline">¶</a></h2> |
| <p>Limit accepts any expression that evaluates to a positive integer as long as it is not referring to any external variables:</p> |
| <p>Query</p> |
| <div class="highlight-default notranslate"><div class="highlight"><pre><span></span>SELECT * |
| FROM cypher('graph_name', $$ |
| MATCH (n) |
| RETURN n.name |
| ORDER BY n.name |
| LIMIT toInteger(3 * rand()) + 1 |
| $$) as (names agtype); |
| |
| </pre></div> |
| </div> |
| <p>Returns one to three top items.</p> |
| <p>Result</p> |
| <table> |
| <thead> |
| <td><strong>names</strong> |
| </td> |
| <thead> |
| <tr> |
| <td>"A" |
| </td> |
| </tr> |
| <tr> |
| <td>"B" |
| </td> |
| </tr> |
| <tr> |
| <td>2 rows |
| </td> |
| </tr> |
| </table> |
| </div> |
| </div> |
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