SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Asterisk
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier requests (alias t)
   Function greater (children 1)
    ExpressionList (children 2)
     Identifier t.event_date
     Literal \'2000-01-01\'
