InsertQuery   (children 2)
 Identifier tab1
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 2)
    ExpressionList (children 3)
     Function rand (children 1)
      ExpressionList
     Function plus (children 1)
      ExpressionList (children 2)
       Identifier number
       Literal UInt64_1
     Function plus (children 1)
      ExpressionList (children 2)
       Identifier number
       Literal UInt64_1
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       Function numbers (children 1)
        ExpressionList (children 1)
         Literal UInt64_1000000
