InsertQuery   (children 2)
 Identifier test
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 2)
    ExpressionList (children 4)
     Identifier number
     Function if (children 1)
      ExpressionList (children 3)
       Function less (children 1)
        ExpressionList (children 2)
         Identifier number
         Literal UInt64_4
       Literal NULL
       Identifier number
     Function tuple (children 1)
      ExpressionList (children 2)
       Identifier number
       Identifier number
     Function toJSONString (children 1)
      ExpressionList (children 1)
       Function map (children 1)
        ExpressionList (children 4)
         Literal \'a\'
         Identifier number
         Literal \'b\'
         Identifier number
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       Function numbers (children 1)
        ExpressionList (children 1)
         Literal UInt64_12
