JPQL: self join
Assume we have following classes What you have to do if you would like find all storages with apples which belongs to owners with name “Jhon” In sql it looks like In jpql Pay attention on trick with function CONCAT
notes and issue research
Assume we have following classes What you have to do if you would like find all storages with apples which belongs to owners with name “Jhon” In sql it looks like In jpql Pay attention on trick with function CONCAT
Lets assume we have bean MyBean with field createTime if you execute following code Variable ‘time’ was created and saved so that we can expect log will print “Times are equal true” but actually we’ll see “Times are equal false” When hibernate fetch Date from DB it returns java.sql.Date That’s it If you need such condition you should [...]
Вирішив поколупатись із Spring Boot і Spring Data Jpa і знайшов цікаву штуку. По дефолту у спрінга стоїть якийсь супероптимальний неймінг який використовує SNAKE_CASE і цей неймінг такий “ядучий” що навіть, якщо ви вказуєте явно camelCase назву для стовпчиків у таблиці на зразок то спрінг це ігнорує. Щоб побороти таке паскудство [...]
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