SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 5)
   ExpressionList (children 2)
    Identifier QUERY_GROUP_ID
    Function count (children 1)
     ExpressionList
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier slow_log
   Function equals (children 1)
    ExpressionList (children 2)
     Identifier current_database
     Function currentDatabase (children 1)
      ExpressionList
   ExpressionList (children 1)
    Identifier QUERY_GROUP_ID
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier QUERY_GROUP_ID
