mazhai opened a new issue #11739: URL: https://github.com/apache/shardingsphere/issues/11739
## 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? 5.0.0-RC1-SNAPSHOT ### Which project did you use? ShardingSphere-JDBC or ShardingSphere-Proxy? ShardingSphere-Proxy ### Expected behavior I found that whenever SQL contains sharded tables, use left join or right join, and then GROUP_CONCAT throws an exception ``` [ERROR] 2021-08-10 14:47:25.552 [ShardingSphere-Command-3] o.a.s.p.f.c.CommandExecutorTask - Exception occur: java.sql.SQLException: Error while preparing statement [/* ApplicationName=DBeaver 7.3.2 - SQLEditor <本地测试-sql.sql> */ select GROUP_CONCAT( sad.`status` ) from service_attendance_detail sad left join service_attendance sa on sad.attendanceId = sa.id LIMIT 0, 200] at org.apache.calcite.avatica.Helper.createException(Helper.java:56) at org.apache.calcite.avatica.Helper.createException(Helper.java:41) at org.apache.calcite.jdbc.CalciteConnectionImpl.prepareStatement_(CalciteConnectionImpl.java:220) at org.apache.calcite.jdbc.CalciteConnectionImpl.prepareStatement(CalciteConnectionImpl.java:202) at org.apache.calcite.jdbc.CalciteConnectionImpl.prepareStatement(CalciteConnectionImpl.java:93) at org.apache.calcite.avatica.AvaticaConnection.prepareStatement(AvaticaConnection.java:175) at org.apache.shardingsphere.infra.executor.sql.federate.execute.FederateJDBCExecutor.execute(FederateJDBCExecutor.java:108) at org.apache.shardingsphere.infra.executor.sql.federate.execute.FederateJDBCExecutor.executeQuery(FederateJDBCExecutor.java:84) at org.apache.shardingsphere.proxy.backend.communication.ProxySQLExecutor.federateExecute(ProxySQLExecutor.java:163) at org.apache.shardingsphere.proxy.backend.communication.ProxySQLExecutor.execute(ProxySQLExecutor.java:135) at org.apache.shardingsphere.proxy.backend.communication.ProxySQLExecutor.execute(ProxySQLExecutor.java:126) at org.apache.shardingsphere.proxy.backend.communication.ProxyLockEngine.doExecute(ProxyLockEngine.java:103) at org.apache.shardingsphere.proxy.backend.communication.ProxyLockEngine.execute(ProxyLockEngine.java:81) at org.apache.shardingsphere.proxy.backend.communication.DatabaseCommunicationEngine.execute(DatabaseCommunicationEngine.java:125) at org.apache.shardingsphere.proxy.backend.text.data.impl.SchemaAssignedDatabaseBackendHandler.execute(SchemaAssignedDatabaseBackendHandler.java:55) at org.apache.shardingsphere.proxy.frontend.mysql.command.query.text.query.MySQLComQueryPacketExecutor.execute(MySQLComQueryPacketExecutor.java:57) at org.apache.shardingsphere.proxy.frontend.command.CommandExecutorTask.executeCommand(CommandExecutorTask.java:98) at org.apache.shardingsphere.proxy.frontend.command.CommandExecutorTask.run(CommandExecutorTask.java:72) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:748) Caused by: org.apache.calcite.runtime.CalciteContextException: From line 2, column 3 to line 2, column 30: No match found for function signature GROUP_CONCAT(<NUMERIC>) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at org.apache.calcite.runtime.Resources$ExInstWithCause.ex(Resources.java:467) at org.apache.calcite.sql.SqlUtil.newContextException(SqlUtil.java:883) at org.apache.calcite.sql.SqlUtil.newContextException(SqlUtil.java:868) at org.apache.calcite.sql.validate.SqlValidatorImpl.newValidationError(SqlValidatorImpl.java:5043) at org.apache.calcite.sql.validate.SqlValidatorImpl.handleUnresolvedFunction(SqlValidatorImpl.java:1838) at org.apache.calcite.sql.SqlFunction.deriveType(SqlFunction.java:321) at org.apache.calcite.sql.SqlFunction.deriveType(SqlFunction.java:226) at org.apache.calcite.sql.validate.SqlValidatorImpl$DeriveTypeVisitor.visit(SqlValidatorImpl.java:5882) at org.apache.calcite.sql.validate.SqlValidatorImpl$DeriveTypeVisitor.visit(SqlValidatorImpl.java:5869) at org.apache.calcite.sql.SqlCall.accept(SqlCall.java:139) at org.apache.calcite.sql.validate.SqlValidatorImpl.deriveTypeImpl(SqlValidatorImpl.java:1756) at org.apache.calcite.sql.validate.SqlValidatorImpl.deriveType(SqlValidatorImpl.java:1741) at org.apache.calcite.sql.validate.SqlValidatorImpl.expandSelectItem(SqlValidatorImpl.java:440) at org.apache.calcite.sql.validate.SqlValidatorImpl.validateSelectList(SqlValidatorImpl.java:4205) at org.apache.calcite.sql.validate.SqlValidatorImpl.validateSelect(SqlValidatorImpl.java:3474) at org.apache.calcite.sql.validate.SelectNamespace.validateImpl(SelectNamespace.java:60) at org.apache.calcite.sql.validate.AbstractNamespace.validate(AbstractNamespace.java:84) at org.apache.calcite.sql.validate.SqlValidatorImpl.validateNamespace(SqlValidatorImpl.java:1067) at org.apache.calcite.sql.validate.SqlValidatorImpl.validateQuery(SqlValidatorImpl.java:1041) at org.apache.calcite.sql.SqlSelect.validate(SqlSelect.java:232) at org.apache.calcite.sql.validate.SqlValidatorImpl.validateScopedExpression(SqlValidatorImpl.java:1016) at org.apache.calcite.sql.validate.SqlValidatorImpl.validate(SqlValidatorImpl.java:724) at org.apache.calcite.sql2rel.SqlToRelConverter.convertQuery(SqlToRelConverter.java:567) at org.apache.calcite.prepare.Prepare.prepareSql(Prepare.java:242) at org.apache.calcite.prepare.Prepare.prepareSql(Prepare.java:208) at org.apache.calcite.prepare.CalcitePrepareImpl.prepare2_(CalcitePrepareImpl.java:642) at org.apache.calcite.prepare.CalcitePrepareImpl.prepare_(CalcitePrepareImpl.java:508) at org.apache.calcite.prepare.CalcitePrepareImpl.prepareSql(CalcitePrepareImpl.java:478) at org.apache.calcite.jdbc.CalciteConnectionImpl.parseQuery(CalciteConnectionImpl.java:231) at org.apache.calcite.jdbc.CalciteConnectionImpl.prepareStatement_(CalciteConnectionImpl.java:213) ... 18 common frames omitted Caused by: org.apache.calcite.sql.validate.SqlValidatorException: No match found for function signature GROUP_CONCAT(<NUMERIC>) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at org.apache.calcite.runtime.Resources$ExInstWithCause.ex(Resources.java:467) at org.apache.calcite.runtime.Resources$ExInst.ex(Resources.java:560) ... 47 common frames omitted ``` For excample: ``` select GROUP_CONCAT( sad.`status` ) from service_attendance_detail sad left join service_attendance sa on sad.attendanceId = sa.id ``` service_attendance_detail is sharding table I wish it would work, but it won't ### Actual behavior can't execute ### Reason analyze (If you can) ### Steps to reproduce the behavior, such as: SQL to execute, sharding rule configuration, when exception occur etc. ### Example codes for reproduce this issue (such as a github link). -- This is an automated message from the Apache Git Service. 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