InsertQuery   (children 2)
 Identifier tab2
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 2)
    ExpressionList (children 5)
     Function toString (children 1)
      ExpressionList (children 1)
       Identifier number
     Identifier number
     Function toString (children 1)
      ExpressionList (children 1)
       Identifier number
     Function toString (children 1)
      ExpressionList (children 1)
       Identifier number
     Literal UInt64_0
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       Function numbers (children 1)
        ExpressionList (children 1)
         Literal Float64_1000000
