[Solved] mysql memory temp table creation SLOW

How to optimize this SQL query?

In case you have your own slow SQL query, you can optimize it automatically here.

For the query above, the following recommendations will be helpful as part of the SQL tuning process.
You'll find 3 sections below:

  1. Description of the steps you can take to speed up the query.
  2. The optimal indexes for this query, which you can copy and create in your database.
  3. An automatically re-written query you can copy and execute in your database.
The optimization process and recommendations:
  1. Create Optimal Indexes (modified query below): The recommended indexes are an integral part of this optimization effort and should be created before testing the execution duration of the optimized query.
Optimal indexes for this query:
ALTER TABLE `MVAssignment` ADD INDEX `mvassignment_idx_associated_assignment_isdeleted` (`AssociatedObjectClass`,`AssignmentSubType`,`IsDeleted`);
ALTER TABLE `MVList_Stores` ADD INDEX `mvlist_stores_idx_mvlistid` (`MVListID`);
ALTER TABLE `MVMasterEntity_AttachedStores` ADD INDEX `mvmasterentity_att_idx_mvstoreid` (`MVStoreID`);
ALTER TABLE `TTT97a84e6f7eaa4bf3b2fbb8491517324c` ADD INDEX `ttt97a84e6f7eaa4bf_idx_id` (`ID`);
The optimized query:
        mvas.MVStoreID AS StoreID 
        MVAssignment AS ass_ 
        MVList_Stores AS list_stores 
            ON ass_.AssignmentValue = list_stores.MVListID 
        MVMasterEntity_AttachedStores mvas 
            ON mvas.MVStoreID = list_stores.MVStoreID 
        EXISTS (
                TTT97a84e6f7eaa4bf3b2fbb8491517324c existsTT 
                existsTT.ID = ass_.AssociatedObjectID
        AND ass_.AssociatedObjectClass = 'MVRep' 
        AND ass_.AssignmentSubType = 'ListID' 
        AND ass_.IsDeleted = 0

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