Oracle database and table

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Catalog

summary

oracle How to divide databases and tables ？

demand ：

1. introduce POM
2. yaml To configure
3. DDL
4. Prepare the test object
5. test

Design thinking

Analysis of implementation ideas

1. introduce POM

    <dependency>
        <groupId>io.shardingsphere</groupId>
        <artifactId>sharding-jdbc-spring-boot-starter</artifactId>
        <version>${sharding.jdbc.version}</version>
    </dependency>

2.yaml To configure

sharding:
jdbc:
datasource:
names: ds0
# data source ds0
ds0:
type: com.alibaba.druid.pool.DruidDataSource
driver-class-name: oracle.jdbc.driver.OracleDriver
url: jdbc:oracle:thin:@localhost:1521:xe
username: ******
password: ******
config:
sharding:
props:
sql.show: true
tables:
t_user: #t_user surface
key-generator-column-name: id # Primary key
actual-data-nodes: ds0.t_userKaTeX parse error: Expected 'EOF', got '#' at position 11: {0..1} #̲ Data nodes , Uniform distribution …{task_id % 2} # Assign by modulo

3. Preparation form DDL

2.3 Preparation form DDL

create table T_ADDRESS
(
ID NUMBER(20) not null
constraint T_ADDRESS_PK
primary key,
NAME VARCHAR2(64),
ADDR VARCHAR2(32)
)
/
comment on column T_ADDRESS.ID is ‘ Primary key ’
/
comment on column T_ADDRESS.NAME is ‘ name ’
/
comment on column T_ADDRESS.ADDR is ‘ Address ’
/

create table T_USER0
(
ID NUMBER(20) not null
constraint TABLE1_PK
primary key,
NAME VARCHAR2(64),
TASK_ID NUMBER(12),
CALL_MONTH VARCHAR2(20)
)
/
comment on column T_USER0.ID is ‘ Primary key ’
/
comment on column T_USER0.NAME is ‘ name ’
/
comment on column T_USER0.TASK_ID is ‘ Mission id’
/
comment on column T_USER0.CALL_MONTH is ‘ Call month ’
/

create table T_USER1
(
ID NUMBER(20) not null
constraint T_USER1_PK
primary key,
NAME VARCHAR2(64),
TASK_ID NUMBER(12),
CALL_MONTH VARCHAR2(20)
)
/
comment on column T_USER1.ID is ‘ Primary key ’
/
comment on column T_USER1.NAME is ‘ name ’
/
comment on column T_USER1.TASK_ID is ‘ Mission id’
/
comment on column T_USER1.CALL_MONTH is ‘ Call month ’
/

4. Prepare the test object

Test objects regardless of table ：
@Test
public void save() {
for (int i = 0; i < 10; i++) {
Address address = new Address();
Long id = i + 1L;
address.setId(id);
address.setName(“name_” + i);
address.setAddr(“addr_” + i);
addressMapper.save(address);
}
}

5. Sub table test object

@Test
public void testSave() {
for (int i = 0; i < 10; i++) {
User user = new User();
Long id =i+1L;
user.setId(id);
user.setName(“test” + i);
user.setCallMonth(“201907”);
user.setTaskId(2L);
userMapper.save(user);
}
}

Expand to achieve

Reference here ：github: Simply implement the above process ：
Entry level implementation :
: Partial source code implementation .
: The source code to achieve

Performance parameter test ：

nothing

References and recommended readings

1. shareJDBC.

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