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        <title>Neo4j - Tag - HEJTAO</title>
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    <title>Neo4j Notes</title>
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    <pubDate>Wed, 08 Feb 2023 00:00:00 &#43;0000</pubDate>
    <author>HEJTAO.COM</author>
    <guid>https://hejtao.netlify.app/posts/cs-neo4j/</guid>
    <description><![CDATA[Combine Multiple Variabel into One OPTIONAL MATCH (p1:Person) WHERE p1.country = &#39;CN&#39; AND NOT (:Parents) --&gt; (p1) OPTIONAL MATCH (p2:Person) WHERE p2.country = &#39;USA&#39; WITH [x IN collect(p1) + collect(p2) | id(x)] AS ids OPTIONAL MATCH (p:Person) WHERE id(p) IN ids OPTIONAL MATCH (p) -[:HAS]-&gt; (:Car) RETURN p Conditional Delete MATCH (ip:IP) --&gt; (p:Port) WHERE id(ip) = 1 WITH count(p) AS cnt, ip, collect(p) AS ports WHERE cnt &gt; 100 FOREACH (p IN ports | DETACH DELETE p) DETACH DELETE ip ]]></description>
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