If you were not in a query, then you cannot just roll back. This is because each statement is an individual transaction and a delete query "outside" a transaction is actually a begin;delete...;commit; in nature. Oracle only supports the rollback after commit if you have the right modul...
6、创建 UserService 及其实现类 public interface UserService {List<UserResponse> getAll();List<UserResponse> findByAddress(String address);UserResponse query(String name);UserResponse add(UserDTO userDTO);UserResponse update(UserDTO userDTO);void delete(String name);}@Service@RequiredArgsConstructorpu...
Write a PostgreSQL query to insert a new order and update the product inventory in a single transaction. Click me to see the solution 11. Transaction to Update and Delete in One Operation Write a PostgreSQL query to update a record and delete a related record within a single transaction. Cli...
public interface UserService { List<UserResponse> getAll(); List<UserResponse> findByAddress(String address); UserResponse query(String name); UserResponse add(UserDTO userDTO); UserResponse update(UserDTO userDTO); void delete(String name); } @Service @RequiredArgsConstructor public class UserSe...
In addition to automatic kernel freezing and recycling of XID, we can manually freeze and recycle XID using commands or SQL: Query the age of the database or table. Database age refers tothe latest transaction number minuses oldest transaction number in the database, and table age refers to...
PortalContext: 1024 total in 1 blocks; 704 free (1 chunks); 320 used: <unnamed> Grand total: 1024 bytes in 1 blocks; 704 free (1 chunks); 320 used Clearly the assert in pquery.c doesn't allow our particular use for server side statement-level rollback, PostgreSQL code should probably...
SQLAlchemy 的Query支持select ... for update / share. session.Query(User).with_for_update().first() session.Query(User).with_for_update(read=True).first() 1. 2. 3. 完整形式是: with_for_update(read=False, nowait=False, of=None) ...
SpringBoot+PostGreSQL Spring Data JPA 问题 两个使用 Transaction 注解的 ServiceA 和 ServiceB,在 A 中引入了 B 的方法用于更新数据 ,当 A 中捕捉到 B 中有异常时,回滚动作正常执行,但是当 return 时则出现org.springframework.transaction.UnexpectedRollbackException: Transaction rolled back because it...
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