What is the efficiency of batch updates in MyBatis Plus?

2 years ago
Olivia Parker
1 minute

MyBatis Plus offers the updateBatchById method to achieve batch update operations, which can improve update efficiency.

When using the updateBatchById method, you need to pass in a collection of entity objects to indicate the data to be updated. MyBatis Plus will automatically update the corresponding data based on the primary key of the entity object.

Here is an example:

List<User> userList = new ArrayList<>();
// 假设要更新的数据已经查询出来并添加到 userList 中
// ...

// 使用 updateBatchById 方法进行批量更新
boolean success = userService.updateBatchById(userList);
if (success) {
    // 更新成功
} else {
    // 更新失败
}

注意事项：

Important points to note:

  1. update a batch of records by their IDs
  2. update multiple batches by their IDs
  3. choose the batch IDs
  4. If the amount of data to be updated is large, it may affect the performance of the database. It is recommended to consider updating in batches or using other methods to improve efficiency based on the specific situation.

In general, using the updateBatchById method makes it convenient to implement batch update operations and enhances the efficiency of updates.

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