ddacxhs opened a new issue #11442:
URL: https://github.com/apache/shardingsphere/issues/11442


   ## Bug Report
   
   **For English only**, other languages will not accept.
   
   Before report a bug, make sure you have:
   
   - Searched open and closed [GitHub 
issues](https://github.com/apache/shardingsphere/issues).
   - Read documentation: [ShardingSphere 
Doc](https://shardingsphere.apache.org/document/current/en/overview).
   
   Please pay attention on issues you submitted, because we maybe need more 
details. 
   If no response anymore and we cannot reproduce it on current information, we 
will **close it**.
   
   Please answer these questions before submitting your issue. Thanks!
   
   ### Which version of ShardingSphere did you use?
   
   ```xml
   <dependency>
       <groupId>org.apache.shardingsphere</groupId>
       <artifactId>shardingsphere-jdbc-core</artifactId>
       <version>5.0.0-beta</version>
   </dependency>
   ```
   
   ### Which project did you use? ShardingSphere-JDBC or ShardingSphere-Proxy?
   
   `ShardingSphere-JDBC`
   
   ### Expected behavior
   
   No errors, no exceptions
   
   ### Actual behavior
   
   ```
   Exception in thread "main" 
org.springframework.dao.TransientDataAccessResourceException: 
StatementCallback; SQL [SELECT DISTINCT * FROM( SELECT a.* FROM actor a LEFT 
JOIN film_actor b ON a.actor_id = b.actor_id WHERE b.film_id IN (1, 23) ORDER 
BY b.last_update DESC) tmp]; Column index out of range.; nested exception is 
java.sql.SQLException: Column index out of range.
        at 
org.springframework.jdbc.support.SQLStateSQLExceptionTranslator.doTranslate(SQLStateSQLExceptionTranslator.java:110)
        at 
org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:72)
        at 
org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:81)
        at 
org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:81)
        at 
org.springframework.jdbc.core.JdbcTemplate.translateException(JdbcTemplate.java:1442)
        at 
org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:387)
        at 
org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:451)
        at 
org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:461)
        at 
org.springframework.jdbc.core.JdbcTemplate.queryForList(JdbcTemplate.java:489)
        at example.ReadWriteSplitApp.main(ReadWriteSplitApp.java:51)
   Caused by: java.sql.SQLException: Column index out of range.
        at 
com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:129)
        at 
com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97)
        at 
com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89)
        at 
com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63)
        at 
com.mysql.cj.jdbc.result.ResultSetMetaData.getField(ResultSetMetaData.java:221)
        at 
com.mysql.cj.jdbc.result.ResultSetMetaData.getColumnLabel(ResultSetMetaData.java:179)
        at 
org.apache.shardingsphere.driver.jdbc.core.resultset.ShardingSphereResultSetMetaData.getColumnLabel(ShardingSphereResultSetMetaData.java:97)
        at 
org.springframework.jdbc.support.JdbcUtils.lookupColumnName(JdbcUtils.java:458)
        at 
org.springframework.jdbc.core.ColumnMapRowMapper.mapRow(ColumnMapRowMapper.java:57)
        at 
org.springframework.jdbc.core.ColumnMapRowMapper.mapRow(ColumnMapRowMapper.java:49)
        at 
org.springframework.jdbc.core.RowMapperResultSetExtractor.extractData(RowMapperResultSetExtractor.java:94)
        at 
org.springframework.jdbc.core.RowMapperResultSetExtractor.extractData(RowMapperResultSetExtractor.java:61)
        at 
org.springframework.jdbc.core.JdbcTemplate$1QueryStatementCallback.doInStatement(JdbcTemplate.java:439)
        at 
org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:375)
        ... 4 more
   ```
   
   ### Reason analyze (If you can)
   
   
org.apache.shardingsphere.driver.jdbc.core.resultset.ShardingSphereResultSetMetaData#getColumnCount
  Inconsistent with the real return of 
com.mysql.cj.jdbc.result.ResultSetMetaData#getColumnCount
   
   ### Steps to reproduce the behavior, such as: SQL to execute, sharding rule 
configuration, when exception occur etc.
   
   **mysql database**
   
   ```sql
   CREATE TABLE `actor` (
     `actor_id` smallint(5) unsigned NOT NULL AUTO_INCREMENT,
     `first_name` varchar(45) NOT NULL,
     `last_name` varchar(45) NOT NULL,
     `last_update` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE 
CURRENT_TIMESTAMP,
     PRIMARY KEY (`actor_id`),
     KEY `idx_actor_last_name` (`last_name`)
   ) ENGINE=InnoDB AUTO_INCREMENT=11 DEFAULT CHARSET=utf8mb4;
   
   CREATE TABLE `film_actor` (
     `actor_id` smallint(5) unsigned NOT NULL,
     `film_id` smallint(5) unsigned NOT NULL,
     `last_update` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE 
CURRENT_TIMESTAMP,
     PRIMARY KEY (`actor_id`,`film_id`)
   ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
   
   INSERT INTO actor (actor_id, first_name, last_name, last_update)
   VALUES (1, 'PENELOPE', 'GUINESS', '2006-02-15 04:34:33'),
          (2, 'NICK', 'WAHLBERG', '2006-02-15 04:34:33'),
          (3, 'ED', 'CHASE', '2006-02-15 04:34:33'),
          (4, 'JENNIFER', 'DAVIS', '2006-02-15 04:34:33'),
          (5, 'JOHNNY', 'LOLLOBRIGIDA', '2006-02-15 04:34:33'),
          (6, 'BETTE', 'NICHOLSON', '2006-02-15 04:34:33'),
          (7, 'GRACE', 'MOSTEL', '2006-02-15 04:34:33'),
          (8, 'MATTHEW', 'JOHANSSON', '2006-02-15 04:34:33'),
          (9, 'JOE', 'SWANK', '2006-02-15 04:34:33'),
          (10, 'CHRISTIAN', 'GABLE', '2006-02-15 04:34:33');
          
   INSERT INTO film_actor (actor_id, film_id, last_update)
   VALUES (1, 1, '2006-02-15 05:05:03'),
          (1, 23, '2006-02-15 05:05:03'),
          (1, 25, '2006-02-15 05:05:03');
   ```
   
   **sql statement**
   
   ```sql
   SELECT DISTINCT *
   FROM (SELECT
             a.*
         FROM actor a
                  LEFT JOIN film_actor b ON a.actor_id = b.actor_id
         WHERE b.film_id IN (1, 23)
         ORDER BY b.last_update DESC) tmp
   ```
   
   
   
   ### Example codes for reproduce this issue (such as a github link).
   
   ```java
   import com.zaxxer.hikari.HikariDataSource;
   import org.apache.shardingsphere.driver.api.ShardingSphereDataSourceFactory;
   import 
org.apache.shardingsphere.readwritesplitting.api.ReadwriteSplittingRuleConfiguration;
   import 
org.apache.shardingsphere.readwritesplitting.api.rule.ReadwriteSplittingDataSourceRuleConfiguration;
   import org.springframework.jdbc.core.JdbcTemplate;
   
   import javax.sql.DataSource;
   import java.sql.SQLException;
   import java.util.*;
   import java.util.stream.Collectors;
   
   public class ReadWriteSplitApp {
   
       public static DataSource createDataSource() {
           HikariDataSource hikariDataSource = new HikariDataSource();
           hikariDataSource.setDriverClassName("com.mysql.cj.jdbc.Driver");
           
hikariDataSource.setJdbcUrl("jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&characterEncoding=utf-8&allowMultiQueries=true&useSSL=false&serverTimezone=Asia/Shanghai");
           hikariDataSource.setUsername("root");
           hikariDataSource.setPassword("root");
           return hikariDataSource;
       }
   
       public static DataSource createReadWriteSplitDataSource() throws 
SQLException {
           Map<String, DataSource> dataSourceMap = new HashMap<>();
           dataSourceMap.put("primary", createDataSource());
           dataSourceMap.put("replicate", createDataSource());
           ReadwriteSplittingDataSourceRuleConfiguration 
readwriteSplittingDataSourceRuleConfiguration = new 
ReadwriteSplittingDataSourceRuleConfiguration(
                   "test",
                   null,
                   "primary",
                   dataSourceMap.keySet().stream().filter(k -> 
!"primary".equals(k)).collect(Collectors.toList()),
                   "ROUND_ROBIN"
           );
   
           ReadwriteSplittingRuleConfiguration 
readwriteSplittingRuleConfiguration = new ReadwriteSplittingRuleConfiguration(
                   
Collections.singletonList(readwriteSplittingDataSourceRuleConfiguration),
                   new HashMap<>(3)
           );
           return 
ShardingSphereDataSourceFactory.createDataSource(dataSourceMap, 
Collections.singletonList(readwriteSplittingRuleConfiguration), new 
Properties());
       }
   
   
       public static void main(String[] args) throws Exception {
           DataSource dataSource = createReadWriteSplitDataSource();
           JdbcTemplate jdbcTemplate = new JdbcTemplate(dataSource);
           List<Map<String, Object>> list = jdbcTemplate.queryForList("SELECT 
DISTINCT * FROM( SELECT a.* FROM actor a LEFT JOIN film_actor b ON a.actor_id = 
b.actor_id WHERE b.film_id IN (1, 23) ORDER BY b.last_update DESC) tmp");
           System.out.println("Run Success!");
       }
   
   }
   ```


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