CreateQuery test (children 3)
 Identifier test
 Storage definition (children 3)
  Function MergeTree
  Identifier number
  Set
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 2)
    ExpressionList (children 2)
     Identifier number
     Function toString (alias x) (children 1)
      ExpressionList (children 1)
       Function rand (children 1)
        ExpressionList
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       Function numbers (children 1)
        ExpressionList (children 1)
         Literal UInt64_10000000
