# Kv Mapping Continues...

+ Clustered table case - Create clustered table User
```
CREATE TABLE User (
    ID int not null PRIMARY KEY ~!@clustered@!~,
    Name varchar(20),
    Role varchar(20),
    Age int,
    KEY idxAge (Age)
);
```
+ (ID column is the primary key column, cluster column)

+ Insert 3 rows of data
```
Insert into User values ( 1, "TiDB", "SQL Layer", 10);
Insert into User values (2, "TiKV", "KV Engine", 20);
Insert into User values (3, "PD", "Manager", 30);
```

+ KV mapping relationships of data
```
t10_r1 --> ["TiDB", "SQL Layer", 10]
t10_r2 --> ["TiKV", "KV Engine", 20]
t10_r3 --> ["PD", "Manager", 30]
```
------------------------------------------------------------
CREATE TABLE User (
    ID int not null PRIMARY KEY Clustered,
    Name varchar (20),
    Role varchar (20),
    Age int,
    KEY iDxage (Age)
);

1, “TiDB”, “SQL Layer”, 10
2, “TiKV”, “KV Engine”, 20
3, “PD”, “Manager”, 30

t10_r1 —> ["TiDB”, “SQL Layer”, 10]
t10_r2 —> ["TiKV”, “KV Engine”, 20]
t10_r3 —> ["PD”, “Manager”, 30]