SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Asterisk
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Function explain_index_has_all_tokens (children 1)
       ExpressionList (children 2)
        Function equals (children 1)
         ExpressionList (children 2)
          Identifier use_idx_fixed
          Literal UInt64_0
        Function equals (children 1)
         ExpressionList (children 2)
          Identifier filter
          Literal \'V0 V1\'
