tsdb

Bug Description
fix issues found by Coverity Scan in syncMain.c

To Reproduce
N/A

Expected Behavior
fix following issues:
| issue type | category | file path | function | line number |
| -------------------------- | -------------------------- | -------------------------- | -------------------------- |

Describe the bug

No response

To reproduce

1. go to (demo)[https://demo.questdb.io/]
2. query select * trades. Note of missing FROM keyword

One row with 1 returned

Expected Behavior

SQL error

Environment

- **QuestDB version**: 6.4.2

Additional context

No response

示例

• 企业或者组织: 夜莺
• 地点：北京
• 联系方式：contact-us at xxx.com
• 使用场景和经验分享：你们最看重夜莺的哪些功能，解决一个什么样的问题，以及使用规模和范围，使用夜莺监控构建企业级监控体系的过程中，有哪些好的经验分享。
• 需求建议：希望哪些点上夜莺监控能做的更好，更契合您的使用场景。

The ruler jsonnet supports setting local storage mode, but requires the user to do the rest of the plumbing to make this work, i.e. making the file available on every pod.

To make the ruler trivial to deploy using jsonnet for a newcomer, the local mode should (either by default, or as an option) also deploy a ConfigMap so that the contents of the rules file can be changed from the jsonnet.

Description
Refactor EngineBuilder to remove duplicate code

Proposal
code:
https://github.com/CeresDB/ceresdb/blob/890fecf10848a3d09b485af52ff516deccf771fc/analytic_engine/src/setup.rs#L92
https://github.com/CeresDB/ceresdb/blob/890fecf10848a3d09b485af52ff516deccf771fc/analytic_engine/src/setup.rs#L120
https://github.com/CeresDB/ceresdb/blob/890fecf10848a3d09b485af52ff516deccf771f

Describe the requested changes:
This page could be simplified. The most impactful change: Do not start with the "Any (No JVM)" version. It forces us to bother users with the Java version, JAVA_HOME env. variable, etc. That's scary, especially for non-Java folks. If we start with the OS-specific versions and leave the "No JVM" version in some "f