SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function equals (children 1)
     ExpressionList (children 2)
      Function count (children 1)
       ExpressionList
      Literal UInt64_0
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 2)
          ExpressionList (children 1)
           Asterisk
          TablesInSelectQuery (children 1)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             Function viewExplain (children 1)
              ExpressionList (children 3)
               Literal \'EXPLAIN PIPELINE\'
               Literal \'\'
               Subquery (children 1)
                SelectWithUnionQuery (children 1)
                 ExpressionList (children 1)
                  SelectQuery (children 2)
                   ExpressionList (children 1)
                    Asterisk
                   TablesInSelectQuery (children 2)
                    TablesInSelectQueryElement (children 1)
                     TableExpression (children 1)
                      Subquery (alias t1) (children 1)
                       SelectWithUnionQuery (children 1)
                        ExpressionList (children 1)
                         SelectQuery (children 1)
                          ExpressionList (children 1)
                           Literal \'a\' (alias key)
                    TablesInSelectQueryElement (children 2)
                     TableExpression (children 1)
                      Subquery (alias t2) (children 1)
                       SelectWithUnionQuery (children 1)
                        ExpressionList (children 1)
                         SelectQuery (children 1)
                          ExpressionList (children 1)
                           Literal \'a\' (alias key)
                     TableJoin (children 1)
                      Function equals (children 1)
                       ExpressionList (children 2)
                        Identifier t1.key
                        Identifier t2.key
   Function ilike (children 1)
    ExpressionList (children 2)
     Identifier explain
     Literal \'%FilterBySetOnTheFlyTransform%\'
