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Posted to notifications@shardingsphere.apache.org by "PeiMouRen (via GitHub)" <gi...@apache.org> on 2023/06/25 06:58:38 UTC
[GitHub] [shardingsphere] PeiMouRen opened a new issue, #26537: How do I query a single table
PeiMouRen opened a new issue, #26537:
URL: https://github.com/apache/shardingsphere/issues/26537
## Bug Report
### Which version of ShardingSphere did you use?
5.3.2
### Which project did you use? ShardingSphere-JDBC or ShardingSphere-Proxy?
ShardingSphere-Proxy
### Expected behavior
proxy routing data source error when I query single table.
### Actual behavior
The proxy routes correctly to the data source where the single table exist.
### Reason analyze (If you can)
I don't known.
### Steps to reproduce the behavior, such as: SQL to execute, sharding rule configuration, when exception occur etc.
**single table cofig**
```sql
> SHOW DEFAULT SINGLE TABLE STORAGE UNIT;
storage_unit_name
-------------------
RANDOM
> SHOW SINGLE TABLES LIKE 't_test%';
table_name | storage_unit_name
------------+-------------------
t_test | ds_4
t_test1 | ds_4
```
**query a single table**
```sql
> select * from t_test;
ERROR: relation "t_test" does not exist
LINE 1: select * from t_test;
```
**proxy log**
```
2023-06-25 14:55:03,854 [Connection-2-ThreadExecutor] INFO ShardingSphere-SQL - Logic SQL: select * from t_test;
2023-06-25 14:55:03,855 [Connection-2-ThreadExecutor] INFO ShardingSphere-SQL - Actual SQL: ds_0 ::: select * from t_test;
2023-06-25 14:55:03,855 [Connection-2-ThreadExecutor] ERROR o.a.s.p.f.c.CommandExecutorTask - Exception occur:
org.postgresql.util.PSQLException: ERROR: relation "t_test" does not exist
位置：15
at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2676)
at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:2366)
at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:356)
at org.postgresql.jdbc.PgStatement.executeInternal(PgStatement.java:490)
at org.postgresql.jdbc.PgStatement.execute(PgStatement.java:408)
at org.postgresql.jdbc.PgStatement.executeWithFlags(PgStatement.java:329)
at org.postgresql.jdbc.PgStatement.executeCachedSql(PgStatement.java:315)
at org.postgresql.jdbc.PgStatement.executeWithFlags(PgStatement.java:291)
at org.postgresql.jdbc.PgStatement.execute(PgStatement.java:286)
at org.postgresql.jdbc.PgStatement.execute(PgStatement.java:1256)
at com.zaxxer.hikari.pool.ProxyStatement.execute(ProxyStatement.java:102)
at com.zaxxer.hikari.pool.HikariProxyStatement.execute(HikariProxyStatement.java)
at org.apache.shardingsphere.proxy.backend.connector.jdbc.executor.callback.impl.ProxyStatementExecutorCallback.execute(ProxyStatementExecutorCallback.java:42)
at org.apache.shardingsphere.proxy.backend.connector.jdbc.executor.callback.ProxyJDBCExecutorCallback.executeSQL(ProxyJDBCExecutorCallback.java:76)
at org.apache.shardingsphere.proxy.backend.connector.jdbc.executor.callback.ProxyJDBCExecutorCallback.executeSQL(ProxyJDBCExecutorCallback.java:69)
at org.apache.shardingsphere.proxy.backend.connector.jdbc.executor.callback.ProxyJDBCExecutorCallback.executeSQL(ProxyJDBCExecutorCallback.java:46)
at org.apache.shardingsphere.infra.executor.sql.execute.engine.driver.jdbc.JDBCExecutorCallback.execute(JDBCExecutorCallback.java:86)
at org.apache.shardingsphere.infra.executor.sql.execute.engine.driver.jdbc.JDBCExecutorCallback.execute(JDBCExecutorCallback.java:65)
at org.apache.shardingsphere.infra.executor.kernel.ExecutorEngine.syncExecute(ExecutorEngine.java:133)
at org.apache.shardingsphere.infra.executor.kernel.ExecutorEngine.parallelExecute(ExecutorEngine.java:129)
at org.apache.shardingsphere.infra.executor.kernel.ExecutorEngine.execute(ExecutorEngine.java:114)
at org.apache.shardingsphere.infra.executor.sql.execute.engine.driver.jdbc.JDBCExecutor.execute(JDBCExecutor.java:67)
at org.apache.shardingsphere.proxy.backend.connector.jdbc.executor.ProxyJDBCExecutor.execute(ProxyJDBCExecutor.java:74)
at org.apache.shardingsphere.proxy.backend.connector.ProxySQLExecutor.useDriverToExecute(ProxySQLExecutor.java:195)
at org.apache.shardingsphere.proxy.backend.connector.ProxySQLExecutor.execute(ProxySQLExecutor.java:156)
at org.apache.shardingsphere.proxy.backend.connector.DatabaseConnector.doExecute(DatabaseConnector.java:263)
at org.apache.shardingsphere.proxy.backend.connector.DatabaseConnector.doExecute(DatabaseConnector.java:249)
at org.apache.shardingsphere.proxy.backend.connector.DatabaseConnector.execute(DatabaseConnector.java:209)
at org.apache.shardingsphere.proxy.frontend.postgresql.command.query.simple.PostgreSQLComQueryExecutor.execute(PostgreSQLComQueryExecutor.java:77)
at org.apache.shardingsphere.proxy.frontend.command.CommandExecutorTask.doExecuteCommand(CommandExecutorTask.java:114)
at org.apache.shardingsphere.proxy.frontend.command.CommandExecutorTask.executeCommand(CommandExecutorTask.java:109)
at org.apache.shardingsphere.proxy.frontend.command.CommandExecutorTask.run(CommandExecutorTask.java:77)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
```
As shown above, the proxy did not route to the correct data source when querying a single table.
### Example codes for reproduce this issue (such as a github link).
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[GitHub] [shardingsphere] RaigorJiang commented on issue #26537: How do I query a single table
Posted by "RaigorJiang (via GitHub)" <gi...@apache.org>.
RaigorJiang commented on issue #26537:
URL: https://github.com/apache/shardingsphere/issues/26537#issuecomment-1606072009
Hi @peixingzhe
ShardingSphere currently does not support partition tables, and `public` schema is used by default in PG.
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[GitHub] [shardingsphere] github-actions[bot] commented on issue #26537: How do I query a single table
Posted by "github-actions[bot] (via GitHub)" <gi...@apache.org>.
github-actions[bot] commented on issue #26537:
URL: https://github.com/apache/shardingsphere/issues/26537#issuecomment-1652870802
There hasn't been any activity on this issue recently, and in order to prioritize active issues, it will be marked as stale.
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[GitHub] [shardingsphere] peixingzhe commented on issue #26537: How do I query a single table
Posted by "peixingzhe (via GitHub)" <gi...@apache.org>.
peixingzhe commented on issue #26537:
URL: https://github.com/apache/shardingsphere/issues/26537#issuecomment-1606363026
> Hi @peixingzhe ShardingSphere currently does not support partition tables, and `public` schema is used by default in PG.
But why can I query a single table(in custom schema and is a partitioned table) without specifying a schema when I put it in a `ds_0` data source?
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[GitHub] [shardingsphere] RaigorJiang commented on issue #26537: How do I query a single table
Posted by "RaigorJiang (via GitHub)" <gi...@apache.org>.
RaigorJiang commented on issue #26537:
URL: https://github.com/apache/shardingsphere/issues/26537#issuecomment-1608737110
I think it needs to be investigated.
Hi @strongduanmu , do you have some info?
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