// Retrieves generated ID after insertion Long generatedId = newUser.getUserId();

</div>Delete Operations
-----------------

<div>```
int deleteCount = userRepository.deleteById(userId);

List<long> userIds = Arrays.asList(101L, 102L);
int batchDeleteCount = userRepository.deleteBatchIds(userIds);

Map<string object=""> conditionMap = new HashMap<>();
conditionMap.put("status", "inactive");
int conditionalDelete = userRepository.deleteByMap(conditionMap);</string></long>

List ids = Arrays.asList(1001L, 1002L); List users = userRepository.selectBatchIds(ids);

Map queryParams = new HashMap<>(); queryParams.put("department", "engineering"); queryParams.put("active", true); List filteredUsers = userRepository.selectByMap(queryParams);

</div>Wrapper Queries
---------------

<div>```
QueryWrapper<useraccount> queryWrapper = new QueryWrapper<>();
queryWrapper.like("username", "admin")
           .eq("role", "ADMINISTRATOR");

List<useraccount> adminUsers = userRepository.selectList(queryWrapper);</useraccount></useraccount>

System.out.println("Current page: " + result.getCurrent()); System.out.println("Total records: " + result.getTotal()); System.out.println("Page count: " + result.getPages()); List currentPageData = result.getRecords();

</div>Service Layer Implementation
----------------------------

<div>```
public interface UserService extends IService<useraccount> {
    List<useraccount> findInactiveUsers();
}</useraccount></useraccount>

@Override
public List<useraccount> findInactiveUsers() {
    QueryWrapper<useraccount> query = new QueryWrapper<>();
    query.eq("active", false);
    return baseMapper.selectList(query);
}

}

</div></div>