Joins on longtext using exorbitant memory when nested

 CREATE TABLE `sample` (

  `WhitelabelDataSourceId` bigint(20) NOT NULL,

  `Account` longtext DEFAULT NULL,

  `AccountCurrency` longtext DEFAULT NULL,

  `AccountGroup` longtext DEFAULT NULL,

  `Asset` longtext DEFAULT NULL,

  `AssetCurrency` longtext DEFAULT NULL,

  `AssetType` int(11) NOT NULL,

  `AssetTypeOther` int(11) DEFAULT NULL,

  `Commission` double NOT NULL,

  `CommissionInCurrency` double NOT NULL,

  `Digits` int(11) NOT NULL,

  `Entry` longtext DEFAULT NULL,

  `Fees` double NOT NULL,

  `FeesInCurrency` double NOT NULL,

  `OrderNumber` longtext DEFAULT NULL,

  `NotionalAmount` double NOT NULL,

  `NotionalAmountCurrencyRate` double NOT NULL,

  `NotionalAmountCurrencyRateSource` longtext DEFAULT NULL,

  `NotionalAmountInCcy` double NOT NULL,

  `Position` longtext DEFAULT NULL,

  `Price` double NOT NULL,

  `PricePosition` double NOT NULL,

  `Profit` double NOT NULL,

  `ProfitCurrencyRate` double NOT NULL,

  `ProfitCurrencyRateAccount` double NOT NULL,

  `ProfitCurrencyRateAccountSource` longtext DEFAULT NULL,

  `ProfitCurrencyRateSource` longtext DEFAULT NULL,

  `ProfitInCurrency` double NOT NULL,

  `Quantity` double NOT NULL,

  `SecondaryConversionRate` double NOT NULL,

  `SecondaryConversionRateSource` longtext DEFAULT NULL,

  `Side` longtext DEFAULT NULL,

  `Swaps` double NOT NULL,

  `SwapsInCurrency` double NOT NULL,

  `Ticket` longtext DEFAULT NULL,

  `Timestamp` datetime(6) NOT NULL,

  `ErrorType` int(11) DEFAULT NULL,

  `Errors` longtext DEFAULT NULL,

  `CreationDate` datetime(6) NOT NULL,

  `ModificationDate` datetime(6) NOT NULL,

  `Id` bigint(20) NOT NULL

) ENGINE=Columnstore DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci

# Crashes when join is nested

SELECT Position, Ticket FROM sample AS t1 WHERE NOT EXISTS( SELECT 1 FROM sample AS t2 WHERE t2.Position = t1.Position AND t2.Entry = 'Out') LIMIT 0, 1000; 

ERROR 1815 (HY000): Internal error: (437) MCS-2001: Join or subselect exceeds memory limit.

# Running join alone does not crash

  SELECT  count(*)  FROM  sample AS t2 inner join Trade as t1     ON       t2.Position = t1.Position       AND t2.Entry = 'Out'