InsertQuery   (children 2)
 Identifier sequence
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 2)
    ExpressionList (children 3)
     Literal UInt64_1
     Function if (children 1)
      ExpressionList (children 3)
       Function equals (children 1)
        ExpressionList (children 2)
         Identifier number
         Literal UInt64_0
       Literal \'A\'
       Function if (children 1)
        ExpressionList (children 3)
         Function less (children 1)
          ExpressionList (children 2)
           Identifier number
           Literal UInt64_1000000
         Literal \'B\'
         Literal \'C\'
     Identifier number
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       Function numbers (children 1)
        ExpressionList (children 1)
         Literal UInt64_1000001