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new 41055be157 [doc](update) modify the example for UPDATE usage (#1412)
41055be157 is described below
commit 41055be1576c712765eb7091e3a09f9c7deb6d56
Author: zhannngchen <zhangc...@selectdb.com>
AuthorDate: Tue Dec 3 09:20:30 2024 +0800
[doc](update) modify the example for UPDATE usage (#1412)
# Versions
- [x] dev
- [x] 3.0
- [x] 2.1
- [x] 2.0
# Languages
- [x] Chinese
- [x] English
# relate case PR
https://github.com/apache/doris/pull/44854
---
docs/data-operate/update/unique-update.md | 95 ++++++++++++++-----
.../current/data-operate/update/unique-update.md | 97 ++++++++++++++-----
.../data-operate/update/unique-update.md | 101 +++++++++++++++-----
.../data-operate/update/unique-update.md | 103 +++++++++++++++------
.../data-operate/update/unique-update.md | 101 +++++++++++++++-----
.../data-operate/update/unique-update.md | 93 ++++++++++++++-----
.../data-operate/update/unique-update.md | 93 ++++++++++++++-----
.../data-operate/update/unique-update.md | 93 ++++++++++++++-----
8 files changed, 592 insertions(+), 184 deletions(-)
diff --git a/docs/data-operate/update/unique-update.md
b/docs/data-operate/update/unique-update.md
index 65fa137135..aae397dfd4 100644
--- a/docs/data-operate/update/unique-update.md
+++ b/docs/data-operate/update/unique-update.md
@@ -50,40 +50,91 @@ The performance of the UPDATE statement depends on the
number of rows to be upda
## Example
-Suppose there is an order table in Doris, where the order_id is the key
column, and the order status and order amount are the Value columns. The data
looks as follows:
+Assuming in a financial risk control scenario, there is a transaction details
table with the following structure:
-| order_id | order_amount | order_status |
-| -------- | ------------ | ------------ |
-| 1 | 100 | Pending |
+```sql
+CREATE TABLE transaction_details (
+ transaction_id BIGINT NOT NULL, -- Unique transaction ID
+ user_id BIGINT NOT NULL, -- User ID
+ transaction_date DATE NOT NULL, -- Transaction date
+ transaction_time DATETIME NOT NULL, -- Transaction time
+ transaction_amount DECIMAL(18, 2), -- Transaction amount
+ transaction_device STRING, -- Transaction device
+ transaction_region STRING, -- Transaction region
+ average_daily_amount DECIMAL(18, 2), -- Average daily transaction amount
over the last 3 months
+ recent_transaction_count INT, -- Number of transactions in the last
7 days
+ has_dispute_history BOOLEAN, -- Whether there is a dispute history
+ risk_level STRING -- Risk level
+)
+UNIQUE KEY(transaction_id)
+DISTRIBUTED BY HASH(transaction_id) BUCKETS 16
+PROPERTIES (
+ "replication_num" = "3", -- Number of replicas, default is 3
+ "enable_unique_key_merge_on_write" = "true" -- Enable MOW mode, support
merge update
+);
+```
+
+The following transaction data exists:
```sql
-+----------+--------------+--------------+
-| order_id | order_amount | order_status |
-+----------+--------------+--------------+
-| 1 | 100 | Pending |
-+----------+--------------+--------------+
-1 row in set (0.01 sec)
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
+| transaction_id | user_id | transaction_date | transaction_time |
transaction_amount | transaction_device | transaction_region |
average_daily_amount | recent_transaction_count | has_dispute_history |
risk_level |
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
+| 1001 | 5001 | 2024-11-24 | 2024-11-24 14:30:00 |
100.00 | iPhone 12 | New York | 100.00 |
10 | 0 | NULL |
+| 1002 | 5002 | 2024-11-24 | 2024-11-24 03:30:00 |
120.00 | iPhone 12 | New York | 100.00 |
15 | 0 | NULL |
+| 1003 | 5003 | 2024-11-24 | 2024-11-24 10:00:00 |
150.00 | Samsung S21 | Los Angeles | 100.00 |
30 | 0 | NULL |
+| 1004 | 5004 | 2024-11-24 | 2024-11-24 16:00:00 |
300.00 | MacBook Pro | high_risk_region1 | 200.00 |
5 | 0 | NULL |
+| 1005 | 5005 | 2024-11-24 | 2024-11-24 11:00:00 |
1100.00 | iPad Pro | Chicago | 200.00 |
10 | 0 | NULL |
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
```
-Now, when a user clicks on the payment, the Doris system needs to update the
order status of the order with ID '1' to 'To be shipped'. This requires using
the UPDATE functionality.
+Update the risk level of all transactions on a daily basis according to the
following risk control rules:
+1. If there is a dispute history, the risk is high.
+2. If in a high-risk region, the risk is high.
+3. If the transaction amount is abnormal (more than 5 times the daily
average), the risk is high.
+4. Frequent transactions in the last 7 days:
+ a. If the number of transactions > 50, the risk is high.
+ b. If the number of transactions is between 20 and 50, the risk is medium.
+5. Transactions during non-working hours (2 AM to 4 AM), the risk is medium.
+6. The default risk is low.
```sql
-mysql> UPDATE test_order SET order_status = 'To be shipped' WHERE order_id = 1;
-Query OK, 1 row affected (0.11 sec)
-{'label':'update_20ae22daf0354fe0-b5aceeaaddc666c5', 'status':'VISIBLE',
'txnId':'33', 'queryId':'20ae22daf0354fe0-b5aceeaaddc666c5'}
+UPDATE transaction_details
+SET risk_level = CASE
+ -- Transactions with dispute history or in high-risk regions
+ WHEN has_dispute_history = TRUE THEN 'high'
+ WHEN transaction_region IN ('high_risk_region1', 'high_risk_region2') THEN
'high'
+
+ -- Abnormal transaction amount
+ WHEN transaction_amount > 5 * average_daily_amount THEN 'high'
+
+ -- High transaction frequency in the last 7 days
+ WHEN recent_transaction_count > 50 THEN 'high'
+ WHEN recent_transaction_count BETWEEN 20 AND 50 THEN 'medium'
+
+ -- Transactions during non-working hours
+ WHEN HOUR(transaction_time) BETWEEN 2 AND 4 THEN 'medium'
+
+ -- Default risk
+ ELSE 'low'
+END
+WHERE transaction_date = '2024-11-24';
```
-The updated result is as follows:
+The updated data is:
```sql
-+----------+--------------+--------------+
-| order_id | order_amount | order_status |
-+----------+--------------+--------------+
-| 1 | 100 | To be shipped|
-+----------+--------------+--------------+
-1 row in set (0.01 sec)
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
+| transaction_id | user_id | transaction_date | transaction_time |
transaction_amount | transaction_device | transaction_region |
average_daily_amount | recent_transaction_count | has_dispute_history |
risk_level |
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
+| 1001 | 5001 | 2024-11-24 | 2024-11-24 14:30:00 |
100.00 | iPhone 12 | New York | 100.00 |
10 | 0 | low |
+| 1002 | 5002 | 2024-11-24 | 2024-11-24 03:30:00 |
120.00 | iPhone 12 | New York | 100.00 |
15 | 0 | medium |
+| 1003 | 5003 | 2024-11-24 | 2024-11-24 10:00:00 |
150.00 | Samsung S21 | Los Angeles | 100.00 |
30 | 0 | medium |
+| 1004 | 5004 | 2024-11-24 | 2024-11-24 16:00:00 |
300.00 | MacBook Pro | high_risk_region1 | 200.00 |
5 | 0 | high |
+| 1005 | 5005 | 2024-11-24 | 2024-11-24 11:00:00 |
1100.00 | iPad Pro | Chicago | 200.00 |
10 | 0 | high |
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
```
## More Details
-For more detailed syntax on data updates, please refer to the
[UPDATE](../../sql-manual/sql-statements/Data-Manipulation-Statements/Manipulation/UPDATE)
command manual. You can also enter `HELP UPDATE` in the MySQL client command
line for more information and assistance.
\ No newline at end of file
+For more detailed syntax on data updates, please refer to the
[UPDATE](../../sql-manual/sql-statements/Data-Manipulation-Statements/Manipulation/UPDATE)
command manual. You can also enter `HELP UPDATE` in the MySQL client command
line for more information and assistance.
diff --git
a/i18n/zh-CN/docusaurus-plugin-content-docs/current/data-operate/update/unique-update.md
b/i18n/zh-CN/docusaurus-plugin-content-docs/current/data-operate/update/unique-update.md
index 276607527f..2cfd390f59 100644
---
a/i18n/zh-CN/docusaurus-plugin-content-docs/current/data-operate/update/unique-update.md
+++
b/i18n/zh-CN/docusaurus-plugin-content-docs/current/data-operate/update/unique-update.md
@@ -42,46 +42,97 @@ Update 语法在 Doris 中是一个同步语法，即 Update 语句执行成功
### 性能
-Update 语句的性能和待更新的行数以及 condition 的检索效率密切相关。
+Update 语句的性能和待更新的行数以及查询条件的检索效率密切相关。
- 待更新的行数：待更新的行数越多，Update 语句的速度就会越慢。Update 更新比较合适偶发更新的场景，比如修改个别行的值。Update
并不适合大批量的修改数据。
-- condition 的检索效率：Update 实现原理是先将满足 condition 的行做读取处理，所以如果 condition 的检索效率高，则
Update 的速度也会快。condition 列最好能命中索引或者分区分桶裁剪，这样 Doris
就不需要扫全表，可以快速定位到需要更新的行，从而提升更新效率。强烈不推荐 condition 列中包含 value 列。
+- 查询条件的检索效率：Update 实现原理是先将满足查询条件的行做读取处理，所以如果查询条件的检索效率高，则 Update
的速度也会快。条件列最好能命中索引或者分区分桶裁剪，这样 Doris 就不需要扫全表，可以快速定位到需要更新的行，从而提升更新效率。强烈不推荐条件列中包含
value 列。
## 使用示例
-假设 Doris 中存在一张订单表，其中订单 id 是 Key 列，订单状态，订单金额是 Value 列。数据状态如下：
+假设在金融风控场景中，存在如下结构的交易明细表：
-| 订单 id | 订单金额 | 订单状态 |
-| ------ | -------- | -------- |
-| 1 | 100 | 待付款 |
+```sql
+CREATE TABLE transaction_details (
+ transaction_id BIGINT NOT NULL, -- 唯一交易编号
+ user_id BIGINT NOT NULL, -- 用户编号
+ transaction_date DATE NOT NULL, -- 交易日期
+ transaction_time DATETIME NOT NULL, -- 交易时间
+ transaction_amount DECIMAL(18, 2), -- 交易金额
+ transaction_device STRING, -- 交易设备
+ transaction_region STRING, -- 交易地区
+ average_daily_amount DECIMAL(18, 2), -- 最近3个月日均交易金额
+ recent_transaction_count INT, -- 最近7天交易次数
+ has_dispute_history BOOLEAN, -- 是否有拒付记录
+ risk_level STRING -- 风险等级
+)
+UNIQUE KEY(transaction_id)
+DISTRIBUTED BY HASH(transaction_id) BUCKETS 16
+PROPERTIES (
+ "replication_num" = "3", -- 副本数量，默认3
+ "enable_unique_key_merge_on_write" = "true" -- 启用MOW模式，支持合并更新
+);
+```
+
+存在如下交易数据：
```sql
-+----------+--------------+--------------+
-| order_id | order_amount | order_status |
-+----------+--------------+--------------+
-| 1 | 100 | 待付款 |
-+----------+--------------+--------------+
-1 row in set (0.01 sec)
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
+| transaction_id | user_id | transaction_date | transaction_time |
transaction_amount | transaction_device | transaction_region |
average_daily_amount | recent_transaction_count | has_dispute_history |
risk_level |
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
+| 1001 | 5001 | 2024-11-24 | 2024-11-24 14:30:00 |
100.00 | iPhone 12 | New York | 100.00 |
10 | 0 | NULL |
+| 1002 | 5002 | 2024-11-24 | 2024-11-24 03:30:00 |
120.00 | iPhone 12 | New York | 100.00 |
15 | 0 | NULL |
+| 1003 | 5003 | 2024-11-24 | 2024-11-24 10:00:00 |
150.00 | Samsung S21 | Los Angeles | 100.00 |
30 | 0 | NULL |
+| 1004 | 5004 | 2024-11-24 | 2024-11-24 16:00:00 |
300.00 | MacBook Pro | high_risk_region1 | 200.00 |
5 | 0 | NULL |
+| 1005 | 5005 | 2024-11-24 | 2024-11-24 11:00:00 |
1100.00 | iPad Pro | Chicago | 200.00 |
10 | 0 | NULL |
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
```
-这时候，用户点击付款后，Doris 系统需要将订单 id 为 '1' 的订单状态变更为 '待发货'，就需要用到 Update 功能。
+按照如下风控规则来更新每日所有交易记录的风险等级：
+1. 有拒付记录，风险为 high。
+2. 在高风险地区，风险为 high。
+3. 交易金额异常（超过日均 5 倍），风险为 high。
+4. 最近 7 天交易频繁：
+ a. 交易次数 > 50，风险为 high。
+ b. 交易次数在 20-50 之间，风险为 medium。
+5. 非工作时间交易（凌晨 2 点到 4 点），风险为 medium。
+6. 默认风险为 low。
```sql
-mysql> UPDATE test_order SET order_status = '待发货' WHERE order_id = 1;
-Query OK, 1 row affected (0.11 sec)
-{'label':'update_20ae22daf0354fe0-b5aceeaaddc666c5', 'status':'VISIBLE',
'txnId':'33', 'queryId':'20ae22daf0354fe0-b5aceeaaddc666c5'}
+UPDATE transaction_details
+SET risk_level = CASE
+ -- 有拒付记录或在高风险地区的交易
+ WHEN has_dispute_history = TRUE THEN 'high'
+ WHEN transaction_region IN ('high_risk_region1', 'high_risk_region2') THEN
'high'
+
+ -- 突然异常交易金额
+ WHEN transaction_amount > 5 * average_daily_amount THEN 'high'
+
+ -- 最近7天交易频率很高
+ WHEN recent_transaction_count > 50 THEN 'high'
+ WHEN recent_transaction_count BETWEEN 20 AND 50 THEN 'medium'
+
+ -- 非工作时间交易
+ WHEN HOUR(transaction_time) BETWEEN 2 AND 4 THEN 'medium'
+
+ -- 默认风险
+ ELSE 'low'
+END
+WHERE transaction_date = '2024-11-24';
```
-更新后结果如下
+更新之后的数据为
```sql
-+----------+--------------+--------------+
-| order_id | order_amount | order_status |
-+----------+--------------+--------------+
-| 1 | 100 | 待发货 |
-+----------+--------------+--------------+
-1 row in set (0.01 sec)
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
+| transaction_id | user_id | transaction_date | transaction_time |
transaction_amount | transaction_device | transaction_region |
average_daily_amount | recent_transaction_count | has_dispute_history |
risk_level |
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
+| 1001 | 5001 | 2024-11-24 | 2024-11-24 14:30:00 |
100.00 | iPhone 12 | New York | 100.00 |
10 | 0 | low |
+| 1002 | 5002 | 2024-11-24 | 2024-11-24 03:30:00 |
120.00 | iPhone 12 | New York | 100.00 |
15 | 0 | medium |
+| 1003 | 5003 | 2024-11-24 | 2024-11-24 10:00:00 |
150.00 | Samsung S21 | Los Angeles | 100.00 |
30 | 0 | medium |
+| 1004 | 5004 | 2024-11-24 | 2024-11-24 16:00:00 |
300.00 | MacBook Pro | high_risk_region1 | 200.00 |
5 | 0 | high |
+| 1005 | 5005 | 2024-11-24 | 2024-11-24 11:00:00 |
1100.00 | iPad Pro | Chicago | 200.00 |
10 | 0 | high |
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
```
## 更多帮助
diff --git
a/i18n/zh-CN/docusaurus-plugin-content-docs/version-2.0/data-operate/update/unique-update.md
b/i18n/zh-CN/docusaurus-plugin-content-docs/version-2.0/data-operate/update/unique-update.md
index 0c83feeb66..990592b048 100644
---
a/i18n/zh-CN/docusaurus-plugin-content-docs/version-2.0/data-operate/update/unique-update.md
+++
b/i18n/zh-CN/docusaurus-plugin-content-docs/version-2.0/data-operate/update/unique-update.md
@@ -30,7 +30,7 @@ under the License.
- 对满足某些条件的行，修改其取值
-- 这个适合少量数据，不频繁的更新
+- 适合少量数据，不频繁的更新
## 基本原理
@@ -42,46 +42,97 @@ Update 语法在 Doris 中是一个同步语法，即 Update 语句执行成功
### 性能
-Update 语句的性能和待更新的行数以及 condition 的检索效率密切相关。
+Update 语句的性能和待更新的行数以及查询条件的检索效率密切相关。
-- 待更新的行数：待更新的行数越多，Update 语句的速度就会越慢。Update 更新比较合适偶发更新的场景，比如修改个别行的值。Update
并不适合大批量的修改数据。
+- 待更新的行数：待更新的行数越多，Update 语句的速度就会越慢。Update 更新比较适合偶发更新的场景，比如修改个别行的值。Update
并不适合大批量的修改数据。
-- condition 的检索效率：Update 实现原理是先将满足 condition 的行做读取处理，所以如果 condition 的检索效率高，则
Update 的速度也会快。condition 列最好能命中索引或者分区分桶裁剪，这样 Doris
就不需要扫全表，可以快速定位到需要更新的行，从而提升更新效率。强烈不推荐 condition 列中包含 value 列。
+- 查询条件的检索效率：Update 实现原理是先将满足查询条件的行做读取处理，所以如果查询条件的检索效率高，则 Update
的速度也会快。条件列最好能命中索引或者分区分桶裁剪，这样 Doris 就不需要扫全表，可以快速定位到需要更新的行，从而提升更新效率。强烈不推荐条件列中包含
value 列。
## 使用示例
-假设 Doris 中存在一张订单表，其中订单 id 是 Key 列，订单状态，订单金额是 Value 列。数据状态如下：
+假设在金融风控场景中，存在如下结构的交易明细表：
-| 订单 id | 订单金额 | 订单状态 |
-| ------ | -------- | -------- |
-| 1 | 100 | 待付款 |
+```sql
+CREATE TABLE transaction_details (
+ transaction_id BIGINT NOT NULL, -- 唯一交易编号
+ user_id BIGINT NOT NULL, -- 用户编号
+ transaction_date DATE NOT NULL, -- 交易日期
+ transaction_time DATETIME NOT NULL, -- 交易时间
+ transaction_amount DECIMAL(18, 2), -- 交易金额
+ transaction_device STRING, -- 交易设备
+ transaction_region STRING, -- 交易地区
+ average_daily_amount DECIMAL(18, 2), -- 最近3个月日均交易金额
+ recent_transaction_count INT, -- 最近7天交易次数
+ has_dispute_history BOOLEAN, -- 是否有拒付记录
+ risk_level STRING -- 风险等级
+)
+UNIQUE KEY(transaction_id)
+DISTRIBUTED BY HASH(transaction_id) BUCKETS 16
+PROPERTIES (
+ "replication_num" = "3", -- 副本数量，默认3
+ "enable_unique_key_merge_on_write" = "true" -- 启用MOW模式，支持合并更新
+);
+```
+
+存在如下交易数据：
```sql
-+----------+--------------+--------------+
-| order_id | order_amount | order_status |
-+----------+--------------+--------------+
-| 1 | 100 | 待付款 |
-+----------+--------------+--------------+
-1 row in set (0.01 sec)
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
+| transaction_id | user_id | transaction_date | transaction_time |
transaction_amount | transaction_device | transaction_region |
average_daily_amount | recent_transaction_count | has_dispute_history |
risk_level |
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
+| 1001 | 5001 | 2024-11-24 | 2024-11-24 14:30:00 |
100.00 | iPhone 12 | New York | 100.00 |
10 | 0 | NULL |
+| 1002 | 5002 | 2024-11-24 | 2024-11-24 03:30:00 |
120.00 | iPhone 12 | New York | 100.00 |
15 | 0 | NULL |
+| 1003 | 5003 | 2024-11-24 | 2024-11-24 10:00:00 |
150.00 | Samsung S21 | Los Angeles | 100.00 |
30 | 0 | NULL |
+| 1004 | 5004 | 2024-11-24 | 2024-11-24 16:00:00 |
300.00 | MacBook Pro | high_risk_region1 | 200.00 |
5 | 0 | NULL |
+| 1005 | 5005 | 2024-11-24 | 2024-11-24 11:00:00 |
1100.00 | iPad Pro | Chicago | 200.00 |
10 | 0 | NULL |
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
```
-这时候，用户点击付款后，Doris 系统需要将订单 id 为 '1' 的订单状态变更为 '待发货'，就需要用到 Update 功能。
+按照如下风控规则来更新每日所有交易记录的风险等级：
+1. 有拒付记录，风险为 high。
+2. 在高风险地区，风险为 high。
+3. 交易金额异常（超过日均 5 倍），风险为 high。
+4. 最近 7 天交易频繁：
+ a. 交易次数 > 50，风险为 high。
+ b. 交易次数在 20-50 之间，风险为 medium。
+5. 非工作时间交易（凌晨 2 点到 4 点），风险为 medium。
+6. 默认风险为 low。
```sql
-mysql> UPDATE test_order SET order_status = '待发货' WHERE order_id = 1;
-Query OK, 1 row affected (0.11 sec)
-{'label':'update_20ae22daf0354fe0-b5aceeaaddc666c5', 'status':'VISIBLE',
'txnId':'33', 'queryId':'20ae22daf0354fe0-b5aceeaaddc666c5'}
+UPDATE transaction_details
+SET risk_level = CASE
+ -- 有拒付记录或在高风险地区的交易
+ WHEN has_dispute_history = TRUE THEN 'high'
+ WHEN transaction_region IN ('high_risk_region1', 'high_risk_region2') THEN
'high'
+
+ -- 突然异常交易金额
+ WHEN transaction_amount > 5 * average_daily_amount THEN 'high'
+
+ -- 最近7天交易频率很高
+ WHEN recent_transaction_count > 50 THEN 'high'
+ WHEN recent_transaction_count BETWEEN 20 AND 50 THEN 'medium'
+
+ -- 非工作时间交易
+ WHEN HOUR(transaction_time) BETWEEN 2 AND 4 THEN 'medium'
+
+ -- 默认风险
+ ELSE 'low'
+END
+WHERE transaction_date = '2024-11-24';
```
-更新后结果如下
+更新之后的数据为
```sql
-+----------+--------------+--------------+
-| order_id | order_amount | order_status |
-+----------+--------------+--------------+
-| 1 | 100 | 待发货 |
-+----------+--------------+--------------+
-1 row in set (0.01 sec)
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
+| transaction_id | user_id | transaction_date | transaction_time |
transaction_amount | transaction_device | transaction_region |
average_daily_amount | recent_transaction_count | has_dispute_history |
risk_level |
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
+| 1001 | 5001 | 2024-11-24 | 2024-11-24 14:30:00 |
100.00 | iPhone 12 | New York | 100.00 |
10 | 0 | low |
+| 1002 | 5002 | 2024-11-24 | 2024-11-24 03:30:00 |
120.00 | iPhone 12 | New York | 100.00 |
15 | 0 | medium |
+| 1003 | 5003 | 2024-11-24 | 2024-11-24 10:00:00 |
150.00 | Samsung S21 | Los Angeles | 100.00 |
30 | 0 | medium |
+| 1004 | 5004 | 2024-11-24 | 2024-11-24 16:00:00 |
300.00 | MacBook Pro | high_risk_region1 | 200.00 |
5 | 0 | high |
+| 1005 | 5005 | 2024-11-24 | 2024-11-24 11:00:00 |
1100.00 | iPad Pro | Chicago | 200.00 |
10 | 0 | high |
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
```
## 更多帮助
diff --git
a/i18n/zh-CN/docusaurus-plugin-content-docs/version-2.1/data-operate/update/unique-update.md
b/i18n/zh-CN/docusaurus-plugin-content-docs/version-2.1/data-operate/update/unique-update.md
index 276607527f..1160e937ce 100644
---
a/i18n/zh-CN/docusaurus-plugin-content-docs/version-2.1/data-operate/update/unique-update.md
+++
b/i18n/zh-CN/docusaurus-plugin-content-docs/version-2.1/data-operate/update/unique-update.md
@@ -30,11 +30,11 @@ under the License.
- 对满足某些条件的行，修改其取值
-- 这个适合少量数据，不频繁的更新
+- 适合少量数据，不频繁的更新
## 基本原理
-利用查询引擎自身的 where 过滤逻辑，从待更新表中筛选出需要被更新的行。再利用 Unique 模型自带的 Value
列新数据替换旧数据的逻辑，将待更新的行变更后，再重新插入到表中，从而实现行级别更新。
+利用查询引擎自身的 where 过滤逻辑，从待更新表中筛选出需要被更新的行。再利用 Unique 模型自带的 Value
列新数据替换旧数据的逻辑，将待更新的行变更后重新插入到表中，从而实现行级别更新。
### 同步
@@ -42,46 +42,97 @@ Update 语法在 Doris 中是一个同步语法，即 Update 语句执行成功
### 性能
-Update 语句的性能和待更新的行数以及 condition 的检索效率密切相关。
+Update 语句的性能和待更新的行数以及条件的检索效率密切相关。
-- 待更新的行数：待更新的行数越多，Update 语句的速度就会越慢。Update 更新比较合适偶发更新的场景，比如修改个别行的值。Update
并不适合大批量的修改数据。
+- 待更新的行数：待更新的行数越多，Update 语句的速度就会越慢。Update 更新比较适合偶发更新的场景，比如修改个别行的值。Update
并不适合大批量的修改数据。
-- condition 的检索效率：Update 实现原理是先将满足 condition 的行做读取处理，所以如果 condition 的检索效率高，则
Update 的速度也会快。condition 列最好能命中索引或者分区分桶裁剪，这样 Doris
就不需要扫全表，可以快速定位到需要更新的行，从而提升更新效率。强烈不推荐 condition 列中包含 value 列。
+- 查询条件的检索效率：Update 实现原理是先将满足查询条件的行做读取处理，所以如果查询条件的检索效率高，则 Update
的速度也会快。条件列最好能命中索引或者分区分桶裁剪，这样 Doris 就不需要扫全表，可以快速定位到需要更新的行，从而提升更新效率。强烈不推荐条件列中包含
value 列。
## 使用示例
-假设 Doris 中存在一张订单表，其中订单 id 是 Key 列，订单状态，订单金额是 Value 列。数据状态如下：
+假设在金融风控场景中，存在如下结构的交易明细表：
-| 订单 id | 订单金额 | 订单状态 |
-| ------ | -------- | -------- |
-| 1 | 100 | 待付款 |
+```sql
+CREATE TABLE transaction_details (
+ transaction_id BIGINT NOT NULL, -- 唯一交易编号
+ user_id BIGINT NOT NULL, -- 用户编号
+ transaction_date DATE NOT NULL, -- 交易日期
+ transaction_time DATETIME NOT NULL, -- 交易时间
+ transaction_amount DECIMAL(18, 2), -- 交易金额
+ transaction_device STRING, -- 交易设备
+ transaction_region STRING, -- 交易地区
+ average_daily_amount DECIMAL(18, 2), -- 最近3个月日均交易金额
+ recent_transaction_count INT, -- 最近7天交易次数
+ has_dispute_history BOOLEAN, -- 是否有拒付记录
+ risk_level STRING -- 风险等级
+)
+UNIQUE KEY(transaction_id)
+DISTRIBUTED BY HASH(transaction_id) BUCKETS 16
+PROPERTIES (
+ "replication_num" = "3", -- 副本数量，默认3
+ "enable_unique_key_merge_on_write" = "true" -- 启用MOW模式，支持合并更新
+);
+```
+
+存在如下交易数据：
```sql
-+----------+--------------+--------------+
-| order_id | order_amount | order_status |
-+----------+--------------+--------------+
-| 1 | 100 | 待付款 |
-+----------+--------------+--------------+
-1 row in set (0.01 sec)
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
+| transaction_id | user_id | transaction_date | transaction_time |
transaction_amount | transaction_device | transaction_region |
average_daily_amount | recent_transaction_count | has_dispute_history |
risk_level |
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
+| 1001 | 5001 | 2024-11-24 | 2024-11-24 14:30:00 |
100.00 | iPhone 12 | New York | 100.00 |
10 | 0 | NULL |
+| 1002 | 5002 | 2024-11-24 | 2024-11-24 03:30:00 |
120.00 | iPhone 12 | New York | 100.00 |
15 | 0 | NULL |
+| 1003 | 5003 | 2024-11-24 | 2024-11-24 10:00:00 |
150.00 | Samsung S21 | Los Angeles | 100.00 |
30 | 0 | NULL |
+| 1004 | 5004 | 2024-11-24 | 2024-11-24 16:00:00 |
300.00 | MacBook Pro | high_risk_region1 | 200.00 |
5 | 0 | NULL |
+| 1005 | 5005 | 2024-11-24 | 2024-11-24 11:00:00 |
1100.00 | iPad Pro | Chicago | 200.00 |
10 | 0 | NULL |
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
```
-这时候，用户点击付款后，Doris 系统需要将订单 id 为 '1' 的订单状态变更为 '待发货'，就需要用到 Update 功能。
+按照如下风控规则来更新每日所有交易记录的风险等级：
+1. 有拒付记录，风险为 high。
+2. 在高风险地区，风险为 high。
+3. 交易金额异常（超过日均 5 倍），风险为 high。
+4. 最近 7 天交易频繁：
+ a. 交易次数 > 50，风险为 high。
+ b. 交易次数在 20-50 之间，风险为 medium。
+5. 非工作时间交易（凌晨 2 点到 4 点），风险为 medium。
+6. 默认风险为 low。
```sql
-mysql> UPDATE test_order SET order_status = '待发货' WHERE order_id = 1;
-Query OK, 1 row affected (0.11 sec)
-{'label':'update_20ae22daf0354fe0-b5aceeaaddc666c5', 'status':'VISIBLE',
'txnId':'33', 'queryId':'20ae22daf0354fe0-b5aceeaaddc666c5'}
+UPDATE transaction_details
+SET risk_level = CASE
+ -- 有拒付记录或在高风险地区的交易
+ WHEN has_dispute_history = TRUE THEN 'high'
+ WHEN transaction_region IN ('high_risk_region1', 'high_risk_region2') THEN
'high'
+
+ -- 突然异常交易金额
+ WHEN transaction_amount > 5 * average_daily_amount THEN 'high'
+
+ -- 最近7天交易频率很高
+ WHEN recent_transaction_count > 50 THEN 'high'
+ WHEN recent_transaction_count BETWEEN 20 AND 50 THEN 'medium'
+
+ -- 非工作时间交易
+ WHEN HOUR(transaction_time) BETWEEN 2 AND 4 THEN 'medium'
+
+ -- 默认风险
+ ELSE 'low'
+END
+WHERE transaction_date = '2024-11-24';
```
-更新后结果如下
+更新之后的数据为
```sql
-+----------+--------------+--------------+
-| order_id | order_amount | order_status |
-+----------+--------------+--------------+
-| 1 | 100 | 待发货 |
-+----------+--------------+--------------+
-1 row in set (0.01 sec)
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
+| transaction_id | user_id | transaction_date | transaction_time |
transaction_amount | transaction_device | transaction_region |
average_daily_amount | recent_transaction_count | has_dispute_history |
risk_level |
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
+| 1001 | 5001 | 2024-11-24 | 2024-11-24 14:30:00 |
100.00 | iPhone 12 | New York | 100.00 |
10 | 0 | low |
+| 1002 | 5002 | 2024-11-24 | 2024-11-24 03:30:00 |
120.00 | iPhone 12 | New York | 100.00 |
15 | 0 | medium |
+| 1003 | 5003 | 2024-11-24 | 2024-11-24 10:00:00 |
150.00 | Samsung S21 | Los Angeles | 100.00 |
30 | 0 | medium |
+| 1004 | 5004 | 2024-11-24 | 2024-11-24 16:00:00 |
300.00 | MacBook Pro | high_risk_region1 | 200.00 |
5 | 0 | high |
+| 1005 | 5005 | 2024-11-24 | 2024-11-24 11:00:00 |
1100.00 | iPad Pro | Chicago | 200.00 |
10 | 0 | high |
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
```
## 更多帮助
diff --git
a/i18n/zh-CN/docusaurus-plugin-content-docs/version-3.0/data-operate/update/unique-update.md
b/i18n/zh-CN/docusaurus-plugin-content-docs/version-3.0/data-operate/update/unique-update.md
index 276607527f..914e7f7c80 100644
---
a/i18n/zh-CN/docusaurus-plugin-content-docs/version-3.0/data-operate/update/unique-update.md
+++
b/i18n/zh-CN/docusaurus-plugin-content-docs/version-3.0/data-operate/update/unique-update.md
@@ -30,7 +30,7 @@ under the License.
- 对满足某些条件的行，修改其取值
-- 这个适合少量数据，不频繁的更新
+- 适合少量数据，不频繁的更新
## 基本原理
@@ -42,46 +42,97 @@ Update 语法在 Doris 中是一个同步语法，即 Update 语句执行成功
### 性能
-Update 语句的性能和待更新的行数以及 condition 的检索效率密切相关。
+Update 语句的性能和待更新的行数以及查询条件的检索效率密切相关。
-- 待更新的行数：待更新的行数越多，Update 语句的速度就会越慢。Update 更新比较合适偶发更新的场景，比如修改个别行的值。Update
并不适合大批量的修改数据。
+- 待更新的行数：待更新的行数越多，Update 语句的速度就会越慢。Update 更新比较适合偶发更新的场景，比如修改个别行的值。Update
并不适合大批量的修改数据。
-- condition 的检索效率：Update 实现原理是先将满足 condition 的行做读取处理，所以如果 condition 的检索效率高，则
Update 的速度也会快。condition 列最好能命中索引或者分区分桶裁剪，这样 Doris
就不需要扫全表，可以快速定位到需要更新的行，从而提升更新效率。强烈不推荐 condition 列中包含 value 列。
+- 查询条件的检索效率：Update 实现原理是先将满足查询条件的行做读取处理，所以如果查询条件的检索效率高，则 Update
的速度也会快。条件列最好能命中索引或者分区分桶裁剪，这样 Doris 就不需要扫全表，可以快速定位到需要更新的行，从而提升更新效率。强烈不推荐条件列中包含
value 列。
## 使用示例
-假设 Doris 中存在一张订单表，其中订单 id 是 Key 列，订单状态，订单金额是 Value 列。数据状态如下：
+假设在金融风控场景中，存在如下结构的交易明细表：
-| 订单 id | 订单金额 | 订单状态 |
-| ------ | -------- | -------- |
-| 1 | 100 | 待付款 |
+```sql
+CREATE TABLE transaction_details (
+ transaction_id BIGINT NOT NULL, -- 唯一交易编号
+ user_id BIGINT NOT NULL, -- 用户编号
+ transaction_date DATE NOT NULL, -- 交易日期
+ transaction_time DATETIME NOT NULL, -- 交易时间
+ transaction_amount DECIMAL(18, 2), -- 交易金额
+ transaction_device STRING, -- 交易设备
+ transaction_region STRING, -- 交易地区
+ average_daily_amount DECIMAL(18, 2), -- 最近3个月日均交易金额
+ recent_transaction_count INT, -- 最近7天交易次数
+ has_dispute_history BOOLEAN, -- 是否有拒付记录
+ risk_level STRING -- 风险等级
+)
+UNIQUE KEY(transaction_id)
+DISTRIBUTED BY HASH(transaction_id) BUCKETS 16
+PROPERTIES (
+ "replication_num" = "3", -- 副本数量，默认3
+ "enable_unique_key_merge_on_write" = "true" -- 启用MOW模式，支持合并更新
+);
+```
+
+存在如下交易数据：
```sql
-+----------+--------------+--------------+
-| order_id | order_amount | order_status |
-+----------+--------------+--------------+
-| 1 | 100 | 待付款 |
-+----------+--------------+--------------+
-1 row in set (0.01 sec)
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
+| transaction_id | user_id | transaction_date | transaction_time |
transaction_amount | transaction_device | transaction_region |
average_daily_amount | recent_transaction_count | has_dispute_history |
risk_level |
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
+| 1001 | 5001 | 2024-11-24 | 2024-11-24 14:30:00 |
100.00 | iPhone 12 | New York | 100.00 |
10 | 0 | NULL |
+| 1002 | 5002 | 2024-11-24 | 2024-11-24 03:30:00 |
120.00 | iPhone 12 | New York | 100.00 |
15 | 0 | NULL |
+| 1003 | 5003 | 2024-11-24 | 2024-11-24 10:00:00 |
150.00 | Samsung S21 | Los Angeles | 100.00 |
30 | 0 | NULL |
+| 1004 | 5004 | 2024-11-24 | 2024-11-24 16:00:00 |
300.00 | MacBook Pro | high_risk_region1 | 200.00 |
5 | 0 | NULL |
+| 1005 | 5005 | 2024-11-24 | 2024-11-24 11:00:00 |
1100.00 | iPad Pro | Chicago | 200.00 |
10 | 0 | NULL |
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
```
-这时候，用户点击付款后，Doris 系统需要将订单 id 为 '1' 的订单状态变更为 '待发货'，就需要用到 Update 功能。
+按照如下风控规则来更新每日所有交易记录的风险等级：
+1. 有拒付记录，风险为 high。
+2. 在高风险地区，风险为 high。
+3. 交易金额异常（超过日均 5 倍），风险为 high。
+4. 最近 7 天交易频繁：
+ a. 交易次数 > 50，风险为 high。
+ b. 交易次数在 20-50 之间，风险为 medium。
+5. 非工作时间交易（凌晨 2 点到 4 点），风险为 medium。
+6. 默认风险为 low。
```sql
-mysql> UPDATE test_order SET order_status = '待发货' WHERE order_id = 1;
-Query OK, 1 row affected (0.11 sec)
-{'label':'update_20ae22daf0354fe0-b5aceeaaddc666c5', 'status':'VISIBLE',
'txnId':'33', 'queryId':'20ae22daf0354fe0-b5aceeaaddc666c5'}
+UPDATE transaction_details
+SET risk_level = CASE
+ -- 有拒付记录或在高风险地区的交易
+ WHEN has_dispute_history = TRUE THEN 'high'
+ WHEN transaction_region IN ('high_risk_region1', 'high_risk_region2') THEN
'high'
+
+ -- 突然异常交易金额
+ WHEN transaction_amount > 5 * average_daily_amount THEN 'high'
+
+ -- 最近7天交易频率很高
+ WHEN recent_transaction_count > 50 THEN 'high'
+ WHEN recent_transaction_count BETWEEN 20 AND 50 THEN 'medium'
+
+ -- 非工作时间交易
+ WHEN HOUR(transaction_time) BETWEEN 2 AND 4 THEN 'medium'
+
+ -- 默认风险
+ ELSE 'low'
+END
+WHERE transaction_date = '2024-11-24';
```
-更新后结果如下
+更新之后的数据为
```sql
-+----------+--------------+--------------+
-| order_id | order_amount | order_status |
-+----------+--------------+--------------+
-| 1 | 100 | 待发货 |
-+----------+--------------+--------------+
-1 row in set (0.01 sec)
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
+| transaction_id | user_id | transaction_date | transaction_time |
transaction_amount | transaction_device | transaction_region |
average_daily_amount | recent_transaction_count | has_dispute_history |
risk_level |
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
+| 1001 | 5001 | 2024-11-24 | 2024-11-24 14:30:00 |
100.00 | iPhone 12 | New York | 100.00 |
10 | 0 | low |
+| 1002 | 5002 | 2024-11-24 | 2024-11-24 03:30:00 |
120.00 | iPhone 12 | New York | 100.00 |
15 | 0 | medium |
+| 1003 | 5003 | 2024-11-24 | 2024-11-24 10:00:00 |
150.00 | Samsung S21 | Los Angeles | 100.00 |
30 | 0 | medium |
+| 1004 | 5004 | 2024-11-24 | 2024-11-24 16:00:00 |
300.00 | MacBook Pro | high_risk_region1 | 200.00 |
5 | 0 | high |
+| 1005 | 5005 | 2024-11-24 | 2024-11-24 11:00:00 |
1100.00 | iPad Pro | Chicago | 200.00 |
10 | 0 | high |
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
```
## 更多帮助
diff --git a/versioned_docs/version-2.0/data-operate/update/unique-update.md
b/versioned_docs/version-2.0/data-operate/update/unique-update.md
index 6bdb881003..44554dc248 100644
--- a/versioned_docs/version-2.0/data-operate/update/unique-update.md
+++ b/versioned_docs/version-2.0/data-operate/update/unique-update.md
@@ -50,38 +50,89 @@ The performance of the UPDATE statement depends on the
number of rows to be upda
## Example
-Suppose there is an order table in Doris, where the order_id is the key
column, and the order status and order amount are the Value columns. The data
looks as follows:
+Assuming in a financial risk control scenario, there is a transaction details
table with the following structure:
-| order_id | order_amount | order_status |
-| -------- | ------------ | ------------ |
-| 1 | 100 | Pending |
+```sql
+CREATE TABLE transaction_details (
+ transaction_id BIGINT NOT NULL, -- Unique transaction ID
+ user_id BIGINT NOT NULL, -- User ID
+ transaction_date DATE NOT NULL, -- Transaction date
+ transaction_time DATETIME NOT NULL, -- Transaction time
+ transaction_amount DECIMAL(18, 2), -- Transaction amount
+ transaction_device STRING, -- Transaction device
+ transaction_region STRING, -- Transaction region
+ average_daily_amount DECIMAL(18, 2), -- Average daily transaction amount
over the last 3 months
+ recent_transaction_count INT, -- Number of transactions in the last
7 days
+ has_dispute_history BOOLEAN, -- Whether there is a dispute history
+ risk_level STRING -- Risk level
+)
+UNIQUE KEY(transaction_id)
+DISTRIBUTED BY HASH(transaction_id) BUCKETS 16
+PROPERTIES (
+ "replication_num" = "3", -- Number of replicas, default is 3
+ "enable_unique_key_merge_on_write" = "true" -- Enable MOW mode, support
merge update
+);
+```
+
+The following transaction data exists:
```sql
-+----------+--------------+--------------+
-| order_id | order_amount | order_status |
-+----------+--------------+--------------+
-| 1 | 100 | Pending |
-+----------+--------------+--------------+
-1 row in set (0.01 sec)
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
+| transaction_id | user_id | transaction_date | transaction_time |
transaction_amount | transaction_device | transaction_region |
average_daily_amount | recent_transaction_count | has_dispute_history |
risk_level |
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
+| 1001 | 5001 | 2024-11-24 | 2024-11-24 14:30:00 |
100.00 | iPhone 12 | New York | 100.00 |
10 | 0 | NULL |
+| 1002 | 5002 | 2024-11-24 | 2024-11-24 03:30:00 |
120.00 | iPhone 12 | New York | 100.00 |
15 | 0 | NULL |
+| 1003 | 5003 | 2024-11-24 | 2024-11-24 10:00:00 |
150.00 | Samsung S21 | Los Angeles | 100.00 |
30 | 0 | NULL |
+| 1004 | 5004 | 2024-11-24 | 2024-11-24 16:00:00 |
300.00 | MacBook Pro | high_risk_region1 | 200.00 |
5 | 0 | NULL |
+| 1005 | 5005 | 2024-11-24 | 2024-11-24 11:00:00 |
1100.00 | iPad Pro | Chicago | 200.00 |
10 | 0 | NULL |
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
```
-Now, when a user clicks on the payment, the Doris system needs to update the
order status of the order with ID '1' to 'To be shipped'. This requires using
the UPDATE functionality.
+Update the risk level of all transactions on a daily basis according to the
following risk control rules:
+1. If there is a dispute history, the risk is high.
+2. If in a high-risk region, the risk is high.
+3. If the transaction amount is abnormal (more than 5 times the daily
average), the risk is high.
+4. Frequent transactions in the last 7 days:
+ a. If the number of transactions > 50, the risk is high.
+ b. If the number of transactions is between 20 and 50, the risk is medium.
+5. Transactions during non-working hours (2 AM to 4 AM), the risk is medium.
+6. The default risk is low.
```sql
-mysql> UPDATE test_order SET order_status = 'To be shipped' WHERE order_id = 1;
-Query OK, 1 row affected (0.11 sec)
-{'label':'update_20ae22daf0354fe0-b5aceeaaddc666c5', 'status':'VISIBLE',
'txnId':'33', 'queryId':'20ae22daf0354fe0-b5aceeaaddc666c5'}
+UPDATE transaction_details
+SET risk_level = CASE
+ -- Transactions with dispute history or in high-risk regions
+ WHEN has_dispute_history = TRUE THEN 'high'
+ WHEN transaction_region IN ('high_risk_region1', 'high_risk_region2') THEN
'high'
+
+ -- Abnormal transaction amount
+ WHEN transaction_amount > 5 * average_daily_amount THEN 'high'
+
+ -- High transaction frequency in the last 7 days
+ WHEN recent_transaction_count > 50 THEN 'high'
+ WHEN recent_transaction_count BETWEEN 20 AND 50 THEN 'medium'
+
+ -- Transactions during non-working hours
+ WHEN HOUR(transaction_time) BETWEEN 2 AND 4 THEN 'medium'
+
+ -- Default risk
+ ELSE 'low'
+END
+WHERE transaction_date = '2024-11-24';
```
-The updated result is as follows:
+The updated data is:
```sql
-+----------+--------------+--------------+
-| order_id | order_amount | order_status |
-+----------+--------------+--------------+
-| 1 | 100 | To be shipped|
-+----------+--------------+--------------+
-1 row in set (0.01 sec)
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
+| transaction_id | user_id | transaction_date | transaction_time |
transaction_amount | transaction_device | transaction_region |
average_daily_amount | recent_transaction_count | has_dispute_history |
risk_level |
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
+| 1001 | 5001 | 2024-11-24 | 2024-11-24 14:30:00 |
100.00 | iPhone 12 | New York | 100.00 |
10 | 0 | low |
+| 1002 | 5002 | 2024-11-24 | 2024-11-24 03:30:00 |
120.00 | iPhone 12 | New York | 100.00 |
15 | 0 | medium |
+| 1003 | 5003 | 2024-11-24 | 2024-11-24 10:00:00 |
150.00 | Samsung S21 | Los Angeles | 100.00 |
30 | 0 | medium |
+| 1004 | 5004 | 2024-11-24 | 2024-11-24 16:00:00 |
300.00 | MacBook Pro | high_risk_region1 | 200.00 |
5 | 0 | high |
+| 1005 | 5005 | 2024-11-24 | 2024-11-24 11:00:00 |
1100.00 | iPad Pro | Chicago | 200.00 |
10 | 0 | high |
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
```
## More Details
diff --git a/versioned_docs/version-2.1/data-operate/update/unique-update.md
b/versioned_docs/version-2.1/data-operate/update/unique-update.md
index 65fa137135..871251adcf 100644
--- a/versioned_docs/version-2.1/data-operate/update/unique-update.md
+++ b/versioned_docs/version-2.1/data-operate/update/unique-update.md
@@ -50,38 +50,89 @@ The performance of the UPDATE statement depends on the
number of rows to be upda
## Example
-Suppose there is an order table in Doris, where the order_id is the key
column, and the order status and order amount are the Value columns. The data
looks as follows:
+Assuming in a financial risk control scenario, there is a transaction details
table with the following structure:
-| order_id | order_amount | order_status |
-| -------- | ------------ | ------------ |
-| 1 | 100 | Pending |
+```sql
+CREATE TABLE transaction_details (
+ transaction_id BIGINT NOT NULL, -- Unique transaction ID
+ user_id BIGINT NOT NULL, -- User ID
+ transaction_date DATE NOT NULL, -- Transaction date
+ transaction_time DATETIME NOT NULL, -- Transaction time
+ transaction_amount DECIMAL(18, 2), -- Transaction amount
+ transaction_device STRING, -- Transaction device
+ transaction_region STRING, -- Transaction region
+ average_daily_amount DECIMAL(18, 2), -- Average daily transaction amount
over the last 3 months
+ recent_transaction_count INT, -- Number of transactions in the last
7 days
+ has_dispute_history BOOLEAN, -- Whether there is a dispute history
+ risk_level STRING -- Risk level
+)
+UNIQUE KEY(transaction_id)
+DISTRIBUTED BY HASH(transaction_id) BUCKETS 16
+PROPERTIES (
+ "replication_num" = "3", -- Number of replicas, default is 3
+ "enable_unique_key_merge_on_write" = "true" -- Enable MOW mode, support
merge update
+);
+```
+
+The following transaction data exists:
```sql
-+----------+--------------+--------------+
-| order_id | order_amount | order_status |
-+----------+--------------+--------------+
-| 1 | 100 | Pending |
-+----------+--------------+--------------+
-1 row in set (0.01 sec)
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
+| transaction_id | user_id | transaction_date | transaction_time |
transaction_amount | transaction_device | transaction_region |
average_daily_amount | recent_transaction_count | has_dispute_history |
risk_level |
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
+| 1001 | 5001 | 2024-11-24 | 2024-11-24 14:30:00 |
100.00 | iPhone 12 | New York | 100.00 |
10 | 0 | NULL |
+| 1002 | 5002 | 2024-11-24 | 2024-11-24 03:30:00 |
120.00 | iPhone 12 | New York | 100.00 |
15 | 0 | NULL |
+| 1003 | 5003 | 2024-11-24 | 2024-11-24 10:00:00 |
150.00 | Samsung S21 | Los Angeles | 100.00 |
30 | 0 | NULL |
+| 1004 | 5004 | 2024-11-24 | 2024-11-24 16:00:00 |
300.00 | MacBook Pro | high_risk_region1 | 200.00 |
5 | 0 | NULL |
+| 1005 | 5005 | 2024-11-24 | 2024-11-24 11:00:00 |
1100.00 | iPad Pro | Chicago | 200.00 |
10 | 0 | NULL |
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
```
-Now, when a user clicks on the payment, the Doris system needs to update the
order status of the order with ID '1' to 'To be shipped'. This requires using
the UPDATE functionality.
+Update the risk level of all transactions on a daily basis according to the
following risk control rules:
+1. If there is a dispute history, the risk is high.
+2. If in a high-risk region, the risk is high.
+3. If the transaction amount is abnormal (more than 5 times the daily
average), the risk is high.
+4. Frequent transactions in the last 7 days:
+ a. If the number of transactions > 50, the risk is high.
+ b. If the number of transactions is between 20 and 50, the risk is medium.
+5. Transactions during non-working hours (2 AM to 4 AM), the risk is medium.
+6. The default risk is low.
```sql
-mysql> UPDATE test_order SET order_status = 'To be shipped' WHERE order_id = 1;
-Query OK, 1 row affected (0.11 sec)
-{'label':'update_20ae22daf0354fe0-b5aceeaaddc666c5', 'status':'VISIBLE',
'txnId':'33', 'queryId':'20ae22daf0354fe0-b5aceeaaddc666c5'}
+UPDATE transaction_details
+SET risk_level = CASE
+ -- Transactions with dispute history or in high-risk regions
+ WHEN has_dispute_history = TRUE THEN 'high'
+ WHEN transaction_region IN ('high_risk_region1', 'high_risk_region2') THEN
'high'
+
+ -- Abnormal transaction amount
+ WHEN transaction_amount > 5 * average_daily_amount THEN 'high'
+
+ -- High transaction frequency in the last 7 days
+ WHEN recent_transaction_count > 50 THEN 'high'
+ WHEN recent_transaction_count BETWEEN 20 AND 50 THEN 'medium'
+
+ -- Transactions during non-working hours
+ WHEN HOUR(transaction_time) BETWEEN 2 AND 4 THEN 'medium'
+
+ -- Default risk
+ ELSE 'low'
+END
+WHERE transaction_date = '2024-11-24';
```
-The updated result is as follows:
+The updated data is:
```sql
-+----------+--------------+--------------+
-| order_id | order_amount | order_status |
-+----------+--------------+--------------+
-| 1 | 100 | To be shipped|
-+----------+--------------+--------------+
-1 row in set (0.01 sec)
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
+| transaction_id | user_id | transaction_date | transaction_time |
transaction_amount | transaction_device | transaction_region |
average_daily_amount | recent_transaction_count | has_dispute_history |
risk_level |
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
+| 1001 | 5001 | 2024-11-24 | 2024-11-24 14:30:00 |
100.00 | iPhone 12 | New York | 100.00 |
10 | 0 | low |
+| 1002 | 5002 | 2024-11-24 | 2024-11-24 03:30:00 |
120.00 | iPhone 12 | New York | 100.00 |
15 | 0 | medium |
+| 1003 | 5003 | 2024-11-24 | 2024-11-24 10:00:00 |
150.00 | Samsung S21 | Los Angeles | 100.00 |
30 | 0 | medium |
+| 1004 | 5004 | 2024-11-24 | 2024-11-24 16:00:00 |
300.00 | MacBook Pro | high_risk_region1 | 200.00 |
5 | 0 | high |
+| 1005 | 5005 | 2024-11-24 | 2024-11-24 11:00:00 |
1100.00 | iPad Pro | Chicago | 200.00 |
10 | 0 | high |
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
```
## More Details
diff --git a/versioned_docs/version-3.0/data-operate/update/unique-update.md
b/versioned_docs/version-3.0/data-operate/update/unique-update.md
index 65fa137135..871251adcf 100644
--- a/versioned_docs/version-3.0/data-operate/update/unique-update.md
+++ b/versioned_docs/version-3.0/data-operate/update/unique-update.md
@@ -50,38 +50,89 @@ The performance of the UPDATE statement depends on the
number of rows to be upda
## Example
-Suppose there is an order table in Doris, where the order_id is the key
column, and the order status and order amount are the Value columns. The data
looks as follows:
+Assuming in a financial risk control scenario, there is a transaction details
table with the following structure:
-| order_id | order_amount | order_status |
-| -------- | ------------ | ------------ |
-| 1 | 100 | Pending |
+```sql
+CREATE TABLE transaction_details (
+ transaction_id BIGINT NOT NULL, -- Unique transaction ID
+ user_id BIGINT NOT NULL, -- User ID
+ transaction_date DATE NOT NULL, -- Transaction date
+ transaction_time DATETIME NOT NULL, -- Transaction time
+ transaction_amount DECIMAL(18, 2), -- Transaction amount
+ transaction_device STRING, -- Transaction device
+ transaction_region STRING, -- Transaction region
+ average_daily_amount DECIMAL(18, 2), -- Average daily transaction amount
over the last 3 months
+ recent_transaction_count INT, -- Number of transactions in the last
7 days
+ has_dispute_history BOOLEAN, -- Whether there is a dispute history
+ risk_level STRING -- Risk level
+)
+UNIQUE KEY(transaction_id)
+DISTRIBUTED BY HASH(transaction_id) BUCKETS 16
+PROPERTIES (
+ "replication_num" = "3", -- Number of replicas, default is 3
+ "enable_unique_key_merge_on_write" = "true" -- Enable MOW mode, support
merge update
+);
+```
+
+The following transaction data exists:
```sql
-+----------+--------------+--------------+
-| order_id | order_amount | order_status |
-+----------+--------------+--------------+
-| 1 | 100 | Pending |
-+----------+--------------+--------------+
-1 row in set (0.01 sec)
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
+| transaction_id | user_id | transaction_date | transaction_time |
transaction_amount | transaction_device | transaction_region |
average_daily_amount | recent_transaction_count | has_dispute_history |
risk_level |
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
+| 1001 | 5001 | 2024-11-24 | 2024-11-24 14:30:00 |
100.00 | iPhone 12 | New York | 100.00 |
10 | 0 | NULL |
+| 1002 | 5002 | 2024-11-24 | 2024-11-24 03:30:00 |
120.00 | iPhone 12 | New York | 100.00 |
15 | 0 | NULL |
+| 1003 | 5003 | 2024-11-24 | 2024-11-24 10:00:00 |
150.00 | Samsung S21 | Los Angeles | 100.00 |
30 | 0 | NULL |
+| 1004 | 5004 | 2024-11-24 | 2024-11-24 16:00:00 |
300.00 | MacBook Pro | high_risk_region1 | 200.00 |
5 | 0 | NULL |
+| 1005 | 5005 | 2024-11-24 | 2024-11-24 11:00:00 |
1100.00 | iPad Pro | Chicago | 200.00 |
10 | 0 | NULL |
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
```
-Now, when a user clicks on the payment, the Doris system needs to update the
order status of the order with ID '1' to 'To be shipped'. This requires using
the UPDATE functionality.
+Update the risk level of all transactions on a daily basis according to the
following risk control rules:
+1. If there is a dispute history, the risk is high.
+2. If in a high-risk region, the risk is high.
+3. If the transaction amount is abnormal (more than 5 times the daily
average), the risk is high.
+4. Frequent transactions in the last 7 days:
+ a. If the number of transactions > 50, the risk is high.
+ b. If the number of transactions is between 20 and 50, the risk is medium.
+5. Transactions during non-working hours (2 AM to 4 AM), the risk is medium.
+6. The default risk is low.
```sql
-mysql> UPDATE test_order SET order_status = 'To be shipped' WHERE order_id = 1;
-Query OK, 1 row affected (0.11 sec)
-{'label':'update_20ae22daf0354fe0-b5aceeaaddc666c5', 'status':'VISIBLE',
'txnId':'33', 'queryId':'20ae22daf0354fe0-b5aceeaaddc666c5'}
+UPDATE transaction_details
+SET risk_level = CASE
+ -- Transactions with dispute history or in high-risk regions
+ WHEN has_dispute_history = TRUE THEN 'high'
+ WHEN transaction_region IN ('high_risk_region1', 'high_risk_region2') THEN
'high'
+
+ -- Abnormal transaction amount
+ WHEN transaction_amount > 5 * average_daily_amount THEN 'high'
+
+ -- High transaction frequency in the last 7 days
+ WHEN recent_transaction_count > 50 THEN 'high'
+ WHEN recent_transaction_count BETWEEN 20 AND 50 THEN 'medium'
+
+ -- Transactions during non-working hours
+ WHEN HOUR(transaction_time) BETWEEN 2 AND 4 THEN 'medium'
+
+ -- Default risk
+ ELSE 'low'
+END
+WHERE transaction_date = '2024-11-24';
```
-The updated result is as follows:
+The updated data is:
```sql
-+----------+--------------+--------------+
-| order_id | order_amount | order_status |
-+----------+--------------+--------------+
-| 1 | 100 | To be shipped|
-+----------+--------------+--------------+
-1 row in set (0.01 sec)
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
+| transaction_id | user_id | transaction_date | transaction_time |
transaction_amount | transaction_device | transaction_region |
average_daily_amount | recent_transaction_count | has_dispute_history |
risk_level |
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
+| 1001 | 5001 | 2024-11-24 | 2024-11-24 14:30:00 |
100.00 | iPhone 12 | New York | 100.00 |
10 | 0 | low |
+| 1002 | 5002 | 2024-11-24 | 2024-11-24 03:30:00 |
120.00 | iPhone 12 | New York | 100.00 |
15 | 0 | medium |
+| 1003 | 5003 | 2024-11-24 | 2024-11-24 10:00:00 |
150.00 | Samsung S21 | Los Angeles | 100.00 |
30 | 0 | medium |
+| 1004 | 5004 | 2024-11-24 | 2024-11-24 16:00:00 |
300.00 | MacBook Pro | high_risk_region1 | 200.00 |
5 | 0 | high |
+| 1005 | 5005 | 2024-11-24 | 2024-11-24 11:00:00 |
1100.00 | iPad Pro | Chicago | 200.00 |
10 | 0 | high |
++----------------+---------+------------------+---------------------+--------------------+--------------------+--------------------+----------------------+--------------------------+---------------------+------------+
```
## More Details
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