CreateQuery nullable_00431 (children 2)
 Identifier nullable_00431
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 3)
    ExpressionList (children 11)
     Literal UInt64_1 (alias constant_true)
     Literal UInt64_0 (alias constant_false)
     Literal NULL (alias constant_null)
     Function equals (alias cond_non_constant) (children 1)
      ExpressionList (children 2)
       Function modulo (children 1)
        ExpressionList (children 2)
         Identifier number
         Literal UInt64_3
       Literal UInt64_1
     Function if (alias cond_non_constant_nullable) (children 1)
      ExpressionList (children 3)
       Function equals (children 1)
        ExpressionList (children 2)
         Function modulo (children 1)
          ExpressionList (children 2)
           Identifier number
           Literal UInt64_3
         Literal UInt64_2
       Literal NULL
       Function equals (children 1)
        ExpressionList (children 2)
         Function modulo (children 1)
          ExpressionList (children 2)
           Identifier number
           Literal UInt64_3
         Literal UInt64_1
     Literal \'Hello\' (alias then_constant)
     Literal \'World\' (alias else_constant)
     Function toString (alias then_non_constant) (children 1)
      ExpressionList (children 1)
       Identifier number
     Function toString (alias else_non_constant) (children 1)
      ExpressionList (children 1)
       Function negate (children 1)
        ExpressionList (children 1)
         Identifier number
     Function nullIf (alias then_non_constant_nullable) (children 1)
      ExpressionList (children 2)
       Function toString (children 1)
        ExpressionList (children 1)
         Identifier number
       Literal \'5\'
     Function nullIf (alias else_non_constant_nullable) (children 1)
      ExpressionList (children 2)
       Function toString (children 1)
        ExpressionList (children 1)
         Function negate (children 1)
          ExpressionList (children 1)
           Identifier number
       Literal \'-5\'
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       TableIdentifier system.numbers
    Literal UInt64_10