java - DISTINCT query on multiple columns doesn't work - Google App engine Datastore -

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I want to get different columns from the Google app engine datastore in the endpoint category I am using code but the problem is that if I try to bring only one column then only it works properly and returns different data. If I try to get multiple columns, then DISTINCT is not working and it returns any effect of a different query without all records. I do not know what is wrong with my code. Please suggest any solution and guide me where I am getting wrong. Thank you

Code: @SuppressWarnings ({"uncheck"}) @api method (name = "joiningflow", httpMethod = HttpMethod.GET, path = "UsendPoint (" Cursor ") string cursor string, @noble @ Nominated (" border ") integer boundary) {EntityManager mgr = null}; Cursor cursor = faucet; List of gt; query.getResultList (); cursor = jpacerhelper.gatecuser (lstnams); if (cursor! = Zero) cursorString = cursor.toWebSafeString (); lstString = New Arreelist & lt; String & gt; (); For (object obj []: lstNames) {lstString.add (obj! = Null? Obj [0] .toString (): faucet); LstString.add (obj! = Null? Obj [1] .toString (): Faucet); Object = New Objective Container (); object.setObjectsList (lstString); } Finally {mgr.close (); } Return item; }

Note that DISTINCT works only with indexed properties Does. None of the uFullName or uName is indexed, then the projection will not work.

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