code: public function findInSet($strKey, $varSet, $blnIsField=false)
  	{
  		if (\is_array($varSet))
  		{
  			$varSet = implode(',', $varSet);
  		}
  
  		if ($blnIsField)
  		{
  			$varSet = static::quoteIdentifier($varSet);
  		}
  		else
  		{
  			$varSet = $this->resConnection->quote($varSet);
  		}
  
  		return "FIND_IN_SET(" . static::quoteIdentifier($strKey) . ", " . $varSet . ")";
  	}
docs: Auto-generate a FIND_IN_SET() statement
  
  @param string  $strKey     The field name
  @param mixed   $varSet     The set to find the key in
  @param boolean $blnIsField If true, the set will not be quoted
  
  @return string The FIND_IN_SET() statement