InsertQuery   (children 2)
 Identifier sparse_tuple
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 2)
    ExpressionList (children 2)
     Identifier number
     Function tuple (children 1)
      ExpressionList (children 2)
       Function if (children 1)
        ExpressionList (children 3)
         Function equals (children 1)
          ExpressionList (children 2)
           Function modulo (children 1)
            ExpressionList (children 2)
             Identifier number
             Literal UInt64_20
           Literal UInt64_0
         Identifier number
         Literal UInt64_0
       Function repeat (children 1)
        ExpressionList (children 2)
         Literal \'a\'
         Function plus (children 1)
          ExpressionList (children 2)
           Function modulo (children 1)
            ExpressionList (children 2)
             Identifier number
             Literal UInt64_10
           Literal UInt64_1
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       Function numbers (children 1)
        ExpressionList (children 1)
         Literal UInt64_1000