CreateQuery t (children 4)
 Identifier t
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration n (children 1)
    DataType String
   ColumnDeclaration st (children 1)
    DataType String
 Storage definition (children 1)
  Function Memory
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 2)
    ExpressionList (children 1)
     Asterisk
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       Function values (children 1)
        ExpressionList (children 3)
         Literal Tuple_(\'a\', \'x\')
         Literal Tuple_(\'b\', \'y\')
         Literal Tuple_(\'c\', \'z\')
