title: What is this Oracle SQL Syntax ${}?
body: <p>I have an oracle query which has a select statement </p>
  
  <pre><code>select table.columnname = ${sometext_sometext_sometext}
  </code></pre>
  
  <p>I would like to know what is the purpose of <code>${}</code>. 
  Also this throws an error in Oracle SQL developer. Kindly advise what is the work around. </p>