[ShardingSphere-Proxy] Missing return field

Bug Report

select VERSION(), @@sql_mode;

Which version of ShardingSphere did you use?

ShardingSphere-Proxy 5.1.2

Which project did you use? ShardingSphere-JDBC or ShardingSphere-Proxy?

ShardingSphere-Proxy 5.1.2

Expected behavior

| 5.7.34 | ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION

Actual behavior

Only return the first field value: 5.7.34-ShardingSphere-Proxy 5.1.2

[TeslaCN]

This issue is caused by the result of selecting a function is hardcoded.

https://github.com/apache/shardingsphere/blob/a3a0d3db8d419dd45cc1e0c33c64d7f81edc0655/shardingsphere-proxy/shardingsphere-proxy-backend/src/main/java/org/apache/shardingsphere/proxy/backend/text/admin/mysql/executor/ShowVersionExecutor.java#L38-L53

[xuup]

Hi @xuup Welcome. Do you have any idea about this?

Hi, I hava two thoughts on this issue.

1. redirect request to real database for execution, and get response from database.
2. @@sql_mode represent mode of database as mysql,

ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION

represent some modes supported by the database. I think the mode should be provided by ShardingSphere-Proxy better than database . So, Is it necessary to add the mode configuration supported by ShardingSphere ? I wonder what you think about that。