来我的dou音 aa10246666， 看配套视频
一、实战环境
二、 shard1和shard2上准备环境 1、创建ShardingSphere连接pg所使用的帐号
create user appuser with password '123'; grant appuser to postgres ;
vim?/etc/postgresql/14/main/pg_hba.conf
host ? ?all ? ? ? ? ? ? appuser ? ? ? ?0.0.0.0/0 ? ? ? ? ? ? ? ?md5?
重载访问控制文件?select pg_reload_conf();
postgres=# select pg_reload_conf(); ?pg_reload_conf? ---------------- ?t (1 row)
2、创建ShardingSphere连接pg所使用的数据库shard1上创建数据库 shard1
create database shard1;
shard2上创建数据库 shard2
create database shard2;
三、ShardingSphere-Proxy上准备环境 1、安装ShardingSphere-Proxy安装及配置jdk(jdk的版本要依据你cpu来选择，我用的是mac虚出来的虚机)
tar xzf jdk-8u202-linux-arm64-vfp-hflt.tar.gz
mv jdk1.8.0_202 /usr/local/
/etc/profile最后添加如下配置
PATH=/usr/local/jdk1.8.0_202/bin:$PATH
source /etc/profile
?安装及配置ShardingSphere-Proxy
tar xzf apache-shardingsphere-5.1.0-shardingsphere-proxy-bin.tar.gz
mv apache-shardingsphere-5.1.0-shardingsphere-proxy-bin /usr/local/
2、修改配置文件?server.yamlrules: ? - !AUTHORITY ? ? users: ? ? ? - root@%:123 ? ? provider: ? ? ? type: ALL_PRIVILEGES_PERMITTED
props: ? sql-show: true
3、修改配置文件?config-sharding.yamlschemaName: testdb
dataSources: ? ds_0: ? ? url: jdbc:postgresql://10.211.55.9:5432/shard1 ? ? username: appuser ? ? password: 123 ? ? connectionTimeoutMilliseconds: 30000 ? ? idleTimeoutMilliseconds: 60000 ? ? maxLifetimeMilliseconds: 1800000 ? ? maxPoolSize: 50 ? ? minPoolSize: 1 ? ds_1: ? ? url: jdbc:postgresql://10.211.55.4:5432/shard2 ? ? username: appuser ? ? password: 123 ? ? connectionTimeoutMilliseconds: 30000 ? ? idleTimeoutMilliseconds: 60000 ? ? maxLifetimeMilliseconds: 1800000 ? ? maxPoolSize: 50 ? ? minPoolSize: 1
rules: - !SHARDING ? tables: ? ? t_order: ? ? ? actualDataNodes: ds_${0..1}.t_order_${0..15} ? ? ? tableStrategy: ? ? ? ? standard: ? ? ? ? ? shardingColumn: order_id ? ? ? ? ? shardingAlgorithmName: t_order_inline ? ? ? keyGenerateStrategy: ? ? ? ? ? column: order_id ? ? ? ? ? keyGeneratorName: snowflake # ? ?t_order_item: # ? ? ?actualDataNodes: ds_${0..1}.t_order_item_${0..1} # ? ? ?tableStrategy: # ? ? ? ?standard: # ? ? ? ? ?shardingColumn: order_id # ? ? ? ? ?shardingAlgorithmName: t_order_item_inline # ? ? ?keyGenerateStrategy: # ? ? ? ?column: order_item_id # ? ? ? ?keyGeneratorName: snowflake ? bindingTables: ? ? - t_order # ? ?- t_order,t_order_item ? defaultDatabaseStrategy: ? ? standard: ? ? ? shardingColumn: user_id ? ? ? shardingAlgorithmName: database_inline ? defaultTableStrategy: ? ? none: ?? ? shardingAlgorithms: ? ? database_inline: ? ? ? type: INLINE ? ? ? props: ? ? ? ? algorithm-expression: ds_${user_id % 2} ? ? t_order_inline: ? ? ? type: INLINE ? ? ? props: ? ? ? ? algorithm-expression: t_order_${order_id % 16} # ? ?t_order_item_inline: # ? ? ?type: INLINE # ? ? ?props: # ? ? ? ?algorithm-expression: t_order_item_${order_id % 2}
? keyGenerators: ? ? snowflake: ? ? ? type: SNOWFLAKE ? ? ? props: ? ? ? ? worker-id: 123
4、启动ShardingSphere-Proxy
root@node3:/usr/local/apache-shardingsphere-5.1.0-shardingsphere-proxy-bin/conf# ../bin/start.sh? we find java version: java8, full_version=1.8.0_202 Starting the ShardingSphere-Proxy ... The classpath is /usr/local/apache-shardingsphere-5.1.0-shardingsphere-proxy-bin/conf:.:/usr/local/apache-shardingsphere-5.1.0-shardingsphere-proxy-bin/lib/*:/usr/local/apache-shardingsphere-5.1.0-shardingsphere-proxy-bin/ext-lib/* Please check the STDOUT file: /usr/local/apache-shardingsphere-5.1.0-shardingsphere-proxy-bin/logs/stdout.log
四、测试 1、在node4上连接ShardingSphere-Proxy
postgres@node4:~$ psql -h 10.211.55.6 -U root -p 3307 testdb Password for user root:? psql (14.2 (Debian 14.2-1.pgdg110+1)) Type "help" for help.
testdb=>?
2、在node4上连接ShardingSphere-Proxy，并创建分片表?t_ordercreate table t_order(user_id int, order_id int primary key);
3、在ShardingSphere-Proxy上查看日志 stdout.log，可以看到分别在node1和node2上创建了16张表[INFO ] 2022-04-03 22:55:29.138 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Logic SQL: create table t_order(user_id int, order_id int primary key); [INFO ] 2022-04-03 22:55:29.138 [Connection-4-ThreadExecutor] ShardingSphere-SQL - SQLStatement: PostgreSQLCreateTableStatement(containsNotExistClause=false) [INFO ] 2022-04-03 22:55:29.138 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Actual SQL: ds_1 ::: create table t_order_0(user_id int, order_id int primary key); [INFO ] 2022-04-03 22:55:29.138 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Actual SQL: ds_1 ::: create table t_order_1(user_id int, order_id int primary key); [INFO ] 2022-04-03 22:55:29.138 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Actual SQL: ds_1 ::: create table t_order_2(user_id int, order_id int primary key); [INFO ] 2022-04-03 22:55:29.138 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Actual SQL: ds_1 ::: create table t_order_3(user_id int, order_id int primary key); [INFO ] 2022-04-03 22:55:29.138 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Actual SQL: ds_1 ::: create table t_order_4(user_id int, order_id int primary key); [INFO ] 2022-04-03 22:55:29.138 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Actual SQL: ds_1 ::: create table t_order_5(user_id int, order_id int primary key); [INFO ] 2022-04-03 22:55:29.138 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Actual SQL: ds_1 ::: create table t_order_6(user_id int, order_id int primary key); [INFO ] 2022-04-03 22:55:29.138 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Actual SQL: ds_1 ::: create table t_order_7(user_id int, order_id int primary key); [INFO ] 2022-04-03 22:55:29.138 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Actual SQL: ds_1 ::: create table t_order_8(user_id int, order_id int primary key); [INFO ] 2022-04-03 22:55:29.138 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Actual SQL: ds_1 ::: create table t_order_9(user_id int, order_id int primary key); [INFO ] 2022-04-03 22:55:29.138 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Actual SQL: ds_1 ::: create table t_order_10(user_id int, order_id int primary key); [INFO ] 2022-04-03 22:55:29.138 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Actual SQL: ds_1 ::: create table t_order_11(user_id int, order_id int primary key); [INFO ] 2022-04-03 22:55:29.138 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Actual SQL: ds_1 ::: create table t_order_12(user_id int, order_id int primary key); [INFO ] 2022-04-03 22:55:29.138 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Actual SQL: ds_1 ::: create table t_order_13(user_id int, order_id int primary key); [INFO ] 2022-04-03 22:55:29.138 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Actual SQL: ds_1 ::: create table t_order_14(user_id int, order_id int primary key); [INFO ] 2022-04-03 22:55:29.138 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Actual SQL: ds_1 ::: create table t_order_15(user_id int, order_id int primary key); [INFO ] 2022-04-03 22:55:29.138 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Actual SQL: ds_0 ::: create table t_order_0(user_id int, order_id int primary key); [INFO ] 2022-04-03 22:55:29.138 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Actual SQL: ds_0 ::: create table t_order_1(user_id int, order_id int primary key); [INFO ] 2022-04-03 22:55:29.138 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Actual SQL: ds_0 ::: create table t_order_2(user_id int, order_id int primary key); [INFO ] 2022-04-03 22:55:29.138 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Actual SQL: ds_0 ::: create table t_order_3(user_id int, order_id int primary key); [INFO ] 2022-04-03 22:55:29.138 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Actual SQL: ds_0 ::: create table t_order_4(user_id int, order_id int primary key); [INFO ] 2022-04-03 22:55:29.138 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Actual SQL: ds_0 ::: create table t_order_5(user_id int, order_id int primary key); [INFO ] 2022-04-03 22:55:29.138 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Actual SQL: ds_0 ::: create table t_order_6(user_id int, order_id int primary key); [INFO ] 2022-04-03 22:55:29.138 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Actual SQL: ds_0 ::: create table t_order_7(user_id int, order_id int primary key); [INFO ] 2022-04-03 22:55:29.138 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Actual SQL: ds_0 ::: create table t_order_8(user_id int, order_id int primary key); [INFO ] 2022-04-03 22:55:29.138 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Actual SQL: ds_0 ::: create table t_order_9(user_id int, order_id int primary key); [INFO ] 2022-04-03 22:55:29.138 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Actual SQL: ds_0 ::: create table t_order_10(user_id int, order_id int primary key); [INFO ] 2022-04-03 22:55:29.138 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Actual SQL: ds_0 ::: create table t_order_11(user_id int, order_id int primary key); [INFO ] 2022-04-03 22:55:29.138 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Actual SQL: ds_0 ::: create table t_order_12(user_id int, order_id int primary key); [INFO ] 2022-04-03 22:55:29.138 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Actual SQL: ds_0 ::: create table t_order_13(user_id int, order_id int primary key); [INFO ] 2022-04-03 22:55:29.138 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Actual SQL: ds_0 ::: create table t_order_14(user_id int, order_id int primary key); [INFO ] 2022-04-03 22:55:29.138 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Actual SQL: ds_0 ::: create table t_order_15(user_id int, order_id int primary key);
4、在node1上查看新建表的情况postgres@node1:~$ psql psql (14.2 (Debian 14.2-1.pgdg110+1)) Type "help" for help.
postgres=# \c shard1 You are now connected to database "shard1" as user "postgres". shard1=# \d ? ? ? ? ? ?List of relations ?Schema | ? ?Name ? ?| Type ?| ?Owner ? --------+------------+-------+--------- ?public | t_order_0 ?| table | appuser ?public | t_order_1 ?| table | appuser ?public | t_order_10 | table | appuser ?public | t_order_11 | table | appuser ?public | t_order_12 | table | appuser ?public | t_order_13 | table | appuser ?public | t_order_14 | table | appuser ?public | t_order_15 | table | appuser ?public | t_order_2 ?| table | appuser ?public | t_order_3 ?| table | appuser ?public | t_order_4 ?| table | appuser ?public | t_order_5 ?| table | appuser ?public | t_order_6 ?| table | appuser ?public | t_order_7 ?| table | appuser ?public | t_order_8 ?| table | appuser ?public | t_order_9 ?| table | appuser (16 rows)
5、在node2上查看新建表的情况postgres@node2:~$ psql shard2 psql (14.2 (Debian 14.2-1.pgdg110+1)) Type "help" for help.
shard2=# \d ? ? ? ? ? ?List of relations ?Schema | ? ?Name ? ?| Type ?| ?Owner ? --------+------------+-------+--------- ?public | t_order_0 ?| table | appuser ?public | t_order_1 ?| table | appuser ?public | t_order_10 | table | appuser ?public | t_order_11 | table | appuser ?public | t_order_12 | table | appuser ?public | t_order_13 | table | appuser ?public | t_order_14 | table | appuser ?public | t_order_15 | table | appuser ?public | t_order_2 ?| table | appuser ?public | t_order_3 ?| table | appuser ?public | t_order_4 ?| table | appuser ?public | t_order_5 ?| table | appuser ?public | t_order_6 ?| table | appuser ?public | t_order_7 ?| table | appuser ?public | t_order_8 ?| table | appuser ?public | t_order_9 ?| table | appuser (16 rows)
6、在node4上连接ShardingSphere-Proxy，插入几条数据postgres@node4:~$ psql -h 10.211.55.6 -U root -p 3307 testdb Password for user root:? psql (14.2 (Debian 14.2-1.pgdg110+1)) Type "help" for help.
testdb=>?
insert into t_order values(1, 1); insert into t_order values(2, 1); insert into t_order values(1, 2); insert into t_order values(2, 2); insert into t_order values(1, 3); insert into t_order values(2, 3); testdb=>?
?在ShardingSphere-Proxy上，查看日志stdout.log，观察数据分布式插入的情况
[INFO ] 2022-04-03 23:04:57.311 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Logic SQL: insert into t_order values(1, 1); [INFO ] 2022-04-03 23:04:57.311 [Connection-4-ThreadExecutor] ShardingSphere-SQL - SQLStatement: PostgreSQLInsertStatement(withSegment=Optional.empty) [INFO ] 2022-04-03 23:04:57.311 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Actual SQL: ds_1 ::: insert into t_order_1 values(1, 1); [INFO ] 2022-04-03 23:05:14.515 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Logic SQL: insert into t_order values(2, 1); [INFO ] 2022-04-03 23:05:14.515 [Connection-4-ThreadExecutor] ShardingSphere-SQL - SQLStatement: PostgreSQLInsertStatement(withSegment=Optional.empty) [INFO ] 2022-04-03 23:05:14.515 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Actual SQL: ds_0 ::: insert into t_order_1 values(2, 1); [INFO ] 2022-04-03 23:05:20.018 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Logic SQL: insert into t_order values(1, 2); [INFO ] 2022-04-03 23:05:20.018 [Connection-4-ThreadExecutor] ShardingSphere-SQL - SQLStatement: PostgreSQLInsertStatement(withSegment=Optional.empty) [INFO ] 2022-04-03 23:05:20.018 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Actual SQL: ds_1 ::: insert into t_order_2 values(1, 2); [INFO ] 2022-04-03 23:05:23.546 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Logic SQL: insert into t_order values(2, 2); [INFO ] 2022-04-03 23:05:23.547 [Connection-4-ThreadExecutor] ShardingSphere-SQL - SQLStatement: PostgreSQLInsertStatement(withSegment=Optional.empty) [INFO ] 2022-04-03 23:05:23.547 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Actual SQL: ds_0 ::: insert into t_order_2 values(2, 2); [INFO ] 2022-04-03 23:06:47.975 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Logic SQL: insert into t_order values(1, 3); [INFO ] 2022-04-03 23:06:47.976 [Connection-4-ThreadExecutor] ShardingSphere-SQL - SQLStatement: PostgreSQLInsertStatement(withSegment=Optional.empty) [INFO ] 2022-04-03 23:06:47.976 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Actual SQL: ds_1 ::: insert into t_order_3 values(1, 3); [INFO ] 2022-04-03 23:06:50.604 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Logic SQL: insert into t_order values(2, 3); [INFO ] 2022-04-03 23:06:50.605 [Connection-4-ThreadExecutor] ShardingSphere-SQL - SQLStatement: PostgreSQLInsertStatement(withSegment=Optional.empty) [INFO ] 2022-04-03 23:06:50.605 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Actual SQL: ds_0 ::: insert into t_order_3 values(2, 3);
?在node1上，查看表的情况，以便确认数据插入情况，红色部分大小为8192的，即为有数据插入的
postgres@node1:~$ psql shard1 psql (14.2 (Debian 14.2-1.pgdg110+1)) Type "help" for help.
shard1=# \d+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?List of relations ?Schema | ? ?Name ? ?| Type ?| ?Owner ?| Persistence | Access method | ? ?Size ? ?| Description? --------+------------+-------+---------+-------------+---------------+------------+------------- ?public | t_order_0 ?| table | appuser | permanent ? | heap ? ? ? ? ?| 0 bytes ? ?|? ?public | t_order_1 ?| table | appuser | permanent ? | heap ? ? ? ? ?| 8192 bytes |? ?public | t_order_10 | table | appuser | permanent ? | heap ? ? ? ? ?| 0 bytes ? ?|? ?public | t_order_11 | table | appuser | permanent ? | heap ? ? ? ? ?| 0 bytes ? ?|? ?public | t_order_12 | table | appuser | permanent ? | heap ? ? ? ? ?| 0 bytes ? ?|? ?public | t_order_13 | table | appuser | permanent ? | heap ? ? ? ? ?| 0 bytes ? ?|? ?public | t_order_14 | table | appuser | permanent ? | heap ? ? ? ? ?| 0 bytes ? ?|? ?public | t_order_15 | table | appuser | permanent ? | heap ? ? ? ? ?| 0 bytes ? ?|? ?public | t_order_2 ?| table | appuser | permanent ? | heap ? ? ? ? ?| 8192 bytes |? ?public | t_order_3 ?| table | appuser | permanent ? | heap ? ? ? ? ?| 8192 bytes |? ?public | t_order_4 ?| table | appuser | permanent ? | heap ? ? ? ? ?| 0 bytes ? ?|? ?public | t_order_5 ?| table | appuser | permanent ? | heap ? ? ? ? ?| 0 bytes ? ?|? ?public | t_order_6 ?| table | appuser | permanent ? | heap ? ? ? ? ?| 0 bytes ? ?|? ?public | t_order_7 ?| table | appuser | permanent ? | heap ? ? ? ? ?| 0 bytes ? ?|? ?public | t_order_8 ?| table | appuser | permanent ? | heap ? ? ? ? ?| 0 bytes ? ?|? ?public | t_order_9 ?| table | appuser | permanent ? | heap ? ? ? ? ?| 0 bytes ? ?|? (16 rows)
shard1=#?
?在node2上，查看表的情况，以便确认数据插入情况，红色部分大小为8192的，即为有数据插入的?
postgres@node2:~$ psql shard2 psql (14.2 (Debian 14.2-1.pgdg110+1)) Type "help" for help.
shard2=# \d+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?List of relations ?Schema | ? ?Name ? ?| Type ?| ?Owner ?| Persistence | Access method | ? ?Size ? ?| Description? --------+------------+-------+---------+-------------+---------------+------------+------------- ?public | t_order_0 ?| table | appuser | permanent ? | heap ? ? ? ? ?| 0 bytes ? ?|? ?public | t_order_1 ?| table | appuser | permanent ? | heap ? ? ? ? ?| 8192 bytes |? ?public | t_order_10 | table | appuser | permanent ? | heap ? ? ? ? ?| 0 bytes ? ?|? ?public | t_order_11 | table | appuser | permanent ? | heap ? ? ? ? ?| 0 bytes ? ?|? ?public | t_order_12 | table | appuser | permanent ? | heap ? ? ? ? ?| 0 bytes ? ?|? ?public | t_order_13 | table | appuser | permanent ? | heap ? ? ? ? ?| 0 bytes ? ?|? ?public | t_order_14 | table | appuser | permanent ? | heap ? ? ? ? ?| 0 bytes ? ?|? ?public | t_order_15 | table | appuser | permanent ? | heap ? ? ? ? ?| 0 bytes ? ?|? ?public | t_order_2 ?| table | appuser | permanent ? | heap ? ? ? ? ?| 8192 bytes |? ?public | t_order_3 ?| table | appuser | permanent ? | heap ? ? ? ? ?| 8192 bytes |? ?public | t_order_4 ?| table | appuser | permanent ? | heap ? ? ? ? ?| 0 bytes ? ?|? ?public | t_order_5 ?| table | appuser | permanent ? | heap ? ? ? ? ?| 0 bytes ? ?|? ?public | t_order_6 ?| table | appuser | permanent ? | heap ? ? ? ? ?| 0 bytes ? ?|? ?public | t_order_7 ?| table | appuser | permanent ? | heap ? ? ? ? ?| 0 bytes ? ?|? ?public | t_order_8 ?| table | appuser | permanent ? | heap ? ? ? ? ?| 0 bytes ? ?|? ?public | t_order_9 ?| table | appuser | permanent ? | heap ? ? ? ? ?| 0 bytes ? ?|? (16 rows)
?7、在node4上连接ShardingSphere-Proxy，发起2条查询语句testdb=> select * from t_order where order_id=1; ?user_id | order_id? ---------+---------- ? ? ? ?2 | ? ? ? ?1 ? ? ? ?1 | ? ? ? ?1 (2 rows)
testdb=> select * from t_order where order_id=2; ?user_id | order_id? ---------+---------- ? ? ? ?2 | ? ? ? ?2 ? ? ? ?1 | ? ? ? ?2 (2 rows)
?在ShardingSphere-Proxy上，查看日志stdout.log，观察数据分布式查询的情况
[INFO ] 2022-04-03 23:20:38.118 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Logic SQL: select * from t_order where order_id=1; [INFO ] 2022-04-03 23:20:38.118 [Connection-4-ThreadExecutor] ShardingSphere-SQL - SQLStatement: PostgreSQLSelectStatement(limit=Optional.empty, lock=Optional.empty, window=Optional.empty) [INFO ] 2022-04-03 23:20:38.118 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Actual SQL: ds_0 ::: select * from t_order_1 where order_id=1; [INFO ] 2022-04-03 23:20:38.118 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Actual SQL: ds_1 ::: select * from t_order_1 where order_id=1; [INFO ] 2022-04-03 23:20:46.669 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Logic SQL: select * from t_order where order_id=2; [INFO ] 2022-04-03 23:20:46.669 [Connection-4-ThreadExecutor] ShardingSphere-SQL - SQLStatement: PostgreSQLSelectStatement(limit=Optional.empty, lock=Optional.empty, window=Optional.empty) [INFO ] 2022-04-03 23:20:46.669 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Actual SQL: ds_0 ::: select * from t_order_2 where order_id=2; [INFO ] 2022-04-03 23:20:46.669 [Connection-4-ThreadExecutor] ShardingSphere-SQL - Actual SQL: ds_1 ::: select * from t_order_2 where order_id=2;
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