SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 1)
    Function count (children 1)
     ExpressionList (children 1)
      Identifier _table
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier m2
   Function equals (children 1)
    ExpressionList (children 2)
     Identifier _table
     Literal \'d1\'
   ExpressionList (children 1)
    Identifier _table
