title: Check if value exists in JSON data in MySQL
body: <p>I have a JSON data in MySQL like this</p>
  <pre class="lang-json prettyprint-override"><code>[ { &quot;dates&quot;: [ &quot;25.01.2021&quot;, &quot;25.01.2021&quot; ], &quot;uids&quot;: { &quot;1&quot;, &quot;2&quot;}, &quot;names&quot;: [ &quot;FileEX&quot;, &quot;PlayerEZ&quot; ] } ]
  </code></pre>
  <p>I want check if in uids exists eg. '1'. (If user id exists in a json table). I think i should use a JSON_CONTAINS or JSON_EXTRACT function but i don't know how i shpuld use this for this?</p>