Explain EXPLAIN QUERY TREE (children 1)
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 2)
    ExpressionList (children 2)
     Function any (alias a) (children 1)
      ExpressionList (children 1)
       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_10
           Literal UInt64_5
         Identifier number
         Function CAST (children 1)
          ExpressionList (children 2)
           Literal NULL
           Literal \'Nullable(Int128)\'
     Function toTypeName (children 1)
      ExpressionList (children 1)
       Identifier a
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       Function numbers (children 1)
        ExpressionList (children 1)
         Literal UInt64_100
