ji2019 opened a new issue #8458:
URL: https://github.com/apache/shardingsphere/issues/8458
## Question
```
schemaName: replica_query_db
#
dataSourceCommon:
username: root
password: 123456
connectionTimeoutMilliseconds: 30000
idleTimeoutMilliseconds: 60000
maxLifetimeMilliseconds: 1800000
maxPoolSize: 50
minPoolSize: 1
maintenanceIntervalMilliseconds: 30000
#
dataSources:
primary_ds:
url:
jdbc:mysql://127.0.0.1:3306/demo_primary_ds?serverTimezone=Asia/Shanghai&useSSL=false
replica_ds_0:
url:
jdbc:mysql://127.0.0.1:3306/demo_replica_ds_0?serverTimezone=Asia/Shanghai&useSSL=false
replica_ds_1:
url:
jdbc:mysql://127.0.0.1:3306/demo_replica_ds_1?serverTimezone=Asia/Shanghai&useSSL=false
#
rules:
- !REPLICA_QUERY
dataSources:
pr_ds:
name: pr_ds
primaryDataSourceName: primary_ds
replicaDataSourceNames:
- replica_ds_0
- replica_ds_1
```
Operating system Windows 10
MySQL client Navicat connection shardingsphere-5.0.0-alpha-proxy 3307 port
bug
```
'
[INFO ] 20:31:23.526 [ShardingSphere-Command-1] ShardingSphere-SQL -
SQLStatement: MySQLShowOtherStatement()
[INFO ] 20:31:23.526 [ShardingSphere-Command-1] ShardingSphere-SQL - Actual
SQL: primary_ds ::: SHOW VARIABLES LIKE 'lower_case_%'; SHOW VARIABLES LIKE
'sql_mode'; SELECT COUNT(*) AS support_ndb FROM information_schema.ENGINES
WHERE Engine = 'ndbcluster'
[ERROR] 20:31:23.544 [ShardingSphere-Command-1]
o.a.s.p.f.c.CommandExecutorTask - Exception occur:
com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error
in your SQL syntax; check the manual that corresponds to your MySQL server
version for the right syntax to use near 'SHOW VARIABLES LIKE 'sql_mode';
SELECT COUNT(*) AS support_ndb FROM information_' at line 1
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown
Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown
Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:425)
at com.mysql.jdbc.Util.getInstance(Util.java:408)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:944)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3978)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3914)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2530)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2683)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2491)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2449)
at
com.mysql.jdbc.StatementImpl.executeInternal(StatementImpl.java:845)
at com.mysql.jdbc.StatementImpl.execute(StatementImpl.java:939)
at
com.zaxxer.hikari.pool.ProxyStatement.execute(ProxyStatement.java:103)
at
com.zaxxer.hikari.pool.HikariProxyStatement.execute(HikariProxyStatement.java)
at
org.apache.shardingsphere.proxy.backend.communication.jdbc.statement.accessor.impl.StatementAccessor.execute(StatementAccessor.java:43)
at
org.apache.shardingsphere.proxy.backend.communication.jdbc.execute.engine.jdbc.ProxySQLExecutorCallback.executeSQL(ProxySQLExecutorCallback.java:84)
at
org.apache.shardingsphere.proxy.backend.communication.jdbc.execute.engine.jdbc.ProxySQLExecutorCallback.executeSQL(ProxySQLExecutorCallback.java:77)
at
org.apache.shardingsphere.proxy.backend.communication.jdbc.execute.engine.jdbc.ProxySQLExecutorCallback.executeSQL(ProxySQLExecutorCallback.java:48)
at
org.apache.shardingsphere.infra.executor.sql.resourced.jdbc.executor.impl.DefaultSQLExecutorCallback.execute0(DefaultSQLExecutorCallback.java:75)
at
org.apache.shardingsphere.infra.executor.sql.resourced.jdbc.executor.impl.DefaultSQLExecutorCallback.execute(DefaultSQLExecutorCallback.java:57)
at
org.apache.shardingsphere.infra.executor.kernel.ExecutorKernel.syncExecute(ExecutorKernel.java:99)
at
org.apache.shardingsphere.infra.executor.kernel.ExecutorKernel.parallelExecute(ExecutorKernel.java:95)
at
org.apache.shardingsphere.infra.executor.kernel.ExecutorKernel.execute(ExecutorKernel.java:78)
at
org.apache.shardingsphere.infra.executor.sql.resourced.jdbc.executor.SQLExecutor.execute(SQLExecutor.java:65)
at
org.apache.shardingsphere.proxy.backend.communication.jdbc.execute.engine.jdbc.JDBCExecuteEngine.executeWithManagedResource(JDBCExecuteEngine.java:130)
at
org.apache.shardingsphere.proxy.backend.communication.jdbc.execute.engine.jdbc.JDBCExecuteEngine.execute(JDBCExecuteEngine.java:123)
at
org.apache.shardingsphere.proxy.backend.communication.jdbc.execute.engine.jdbc.JDBCExecuteEngine.execute(JDBCExecuteEngine.java:103)
at
org.apache.shardingsphere.proxy.backend.communication.jdbc.JDBCDatabaseCommunicationEngine.doExecute(JDBCDatabaseCommunicationEngine.java:93)
```
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