InsertQuery   (children 2)
 Identifier optimize_lazy_materialization_with_fixed_string_data_type
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 2)
    ExpressionList (children 3)
     Identifier number
     Function if (children 1)
      ExpressionList (children 3)
       Function modulo (children 1)
        ExpressionList (children 2)
         Identifier number
         Literal UInt64_2
       Literal UInt64_2000
       Identifier number
     Function repeat (children 1)
      ExpressionList (children 2)
       Literal \'a\'
       Function modulo (children 1)
        ExpressionList (children 2)
         Identifier number
         Literal UInt64_10
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       Function numbers (children 1)
        ExpressionList (children 2)
         Literal UInt64_0
         Literal UInt64_1000
