sccc803 opened a new issue #13953:
URL: https://github.com/apache/shardingsphere/issues/13953
### Which version of ShardingSphere did you use?
Master branch.
### Which project did you use? ShardingSphere-JDBC or ShardingSphere-Proxy?
ShardingSphere-Proxy
### Expected behavior
Here is a logic table called t_order, show create table:
CREATE TABLE `t_order` (
`id` bigint(20) NOT NULL AUTO_INCREMENT,
`order_id` bigint(20) unsigned DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4
Insert a record:
``` sql
INSERT INTO t_order (order_id) VALUES (1);
```
Then execute JDBC code below,
``` java
Connection conn = DriverManager.getConnection("jdbc:mysql://xxx",
"username", "password");
PreparedStatement pstmt = conn.prepareStatement("select * from t_order");
return pstmt.executeQuery();
```
It supposed to return the correct ResultSet.
### Actual behavior
An exception has been thrown:
```
java.sql.SQLException: Unknown exception: [java.math.BigInteger cannot be
cast to java.lang.Long]
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:965)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3978)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3914)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:871)
at com.mysql.jdbc.MysqlIO.nextRow(MysqlIO.java:1999)
at com.mysql.jdbc.MysqlIO.readSingleRowSet(MysqlIO.java:3403)
at com.mysql.jdbc.MysqlIO.getResultSet(MysqlIO.java:471)
at com.mysql.jdbc.MysqlIO.readResultsForQueryOrUpdate(MysqlIO.java:3115)
at com.mysql.jdbc.MysqlIO.readAllResults(MysqlIO.java:2344)
at
com.mysql.jdbc.ServerPreparedStatement.serverExecute(ServerPreparedStatement.java:1373)
at
com.mysql.jdbc.ServerPreparedStatement.executeInternal(ServerPreparedStatement.java:788)
at
com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:2011)
at PrepareStatementTest.selectAll(PrepareStatementTest.java:34)
at PrepareStatementTest.main(PrepareStatementTest.java:57)
```
### Reason analyze (If you can)
Mysql driver converts unsigned bigint to BigInter in java when using
PrepareStatement. And Proxy do not resolve BigInteger write into ByteBuf.
```java
public final class MySQLInt8BinaryProtocolValue implements
MySQLBinaryProtocolValue {
@Override
public Object read(final MySQLPacketPayload payload) {
return payload.readInt8();
}
@Override
public void write(final MySQLPacketPayload payload, final Object value) {
if (value instanceof BigDecimal) {
payload.writeInt8(((BigDecimal) value).longValue());
} else if (value instanceof Integer) {
payload.writeInt8(((Integer) value).longValue());
} else {
payload.writeInt8((Long) value);
}
// Do not resolve type of BigInteger.
}
}
```
### Steps to reproduce the behavior, such as: SQL to execute, sharding rule
configuration, when exception occur etc.
1. Set configuration of Proxy:
```yaml
schemaName: sharding_db
dataSources:
ds_0:
url: jdbc:mysql://127.0.0.1:3306/test?serverTimezone=UTC&useSSL=false
username: username
password: password
connectionTimeoutMilliseconds: 30000
idleTimeoutMilliseconds: 60000
maxLifetimeMilliseconds: 1800000
maxPoolSize: 50
minPoolSize: 1
rules:
- !SHARDING
tables:
t_order:
actualDataNodes: ds_0.t_order_${0..1}
tableStrategy:
standard:
shardingColumn: order_id
shardingAlgorithmName: t_order_inline
keyGenerateStrategy:
column: order_id
keyGeneratorName: snowflake
shardingAlgorithms:
t_order_inline:
type: INLINE
props:
algorithm-expression: t_order_${order_id % 2}
keyGenerators:
snowflake:
type: SNOWFLAKE
props:
worker-id: 123
```
2. Create t_order_0 , t_order_1 on ds_0:
``` sql
CREATE TABLE `t_order` (
`id` bigint(20) NOT NULL AUTO_INCREMENT,
`order_id` bigint(20) unsigned DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4
```
3. Start up proxy, and execute insert statement:
``` sql
INSERT INTO t_order (order_id) VALUES (1);
```
4. Execute JDBC query by PrepareStamentment:
``` java
Connection conn =
DriverManager.getConnection("jdbc:mysql://127.0.0.1:3307/sharding_db?useServerPrepStmts=true&&useSSL=false",
"username", "password");
PreparedStatement pstmt = conn.prepareStatement("select * from t_order");
return pstmt.executeQuery();
```
### Example codes for reproduce this issue (such as a github link).
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