feat: add build() function to return the database build info

[Dysprosium0626]

build() function to return the database build info #2909

I hereby agree to the terms of the GreptimeDB CLA

What's changed and what's your intention?

Add build that returns the database build info looks like this:

mysql> select build()\G;
*************************** 1. row ***************************
build(): branch: feat/add-build-udf
commit: 106d60b6bd748e6527fecbebb5010dcba1b8e089
commit short: 106d60b
dirty: true
version: 0.4.4
1 row in set (0.07 sec)

ERROR:
No query specified

Checklist

• I have written the necessary rustdoc comments.
• I have added the necessary unit tests and integration tests.

Refer to a related PR or issue link (optional)

Related issue #2909

[Dysprosium0626]

I am wondering should we put function.rs and function_registry.rs from src/common/function/src/scalars to src/common/function since they now support both scalars and system UDFs.

[waynexia]

Can you also add some corresponding sqlness cases? It's our integration test framework.

And since the build info is changing, you may need this interceptor to fix the output result.

[Dysprosium0626]

Can you also add some corresponding sqlness cases? It's our integration test framework.

And since the build info is changing, you may need this interceptor to fix the output result.

Sure

[codecov]

Codecov Report

Merging #2919 (f3c52ff) into develop (47e5154) will decrease coverage by 0.52%.
Report is 11 commits behind head on develop.
The diff coverage is 93.10%.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #2919      +/-   ##
===========================================
- Coverage    85.11%   84.59%   -0.52%     
===========================================
  Files          756      752       -4     
  Lines       119511   119317     -194     
===========================================
- Hits        101719   100937     -782     
- Misses       17792    18380     +588     

[killme2008]

I am wondering should we put function.rs and function_registry.rs from src/common/function/src/scalars to src/common/function since they now support both scalars and system UDFs.

Good question! I think we can refactor them later.

[killme2008]

Almost LGTM

[killme2008]

@Dysprosium0626 Have some code format issues and cargo-clippy warnings.

You can format the code by cargo fmt.

Find all warnings by cargo clippy --workspace --all-targets -- -D warnings, please fix them all.

[WenyXu]

Rest LGTM

[WenyXu]

@Dysprosium0626 Have some code format issues and cargo-clippy warnings.

You can format the code by cargo fmt.

Find all warnings by cargo clippy --workspace --all-targets -- -D warnings, please fix them all.

BTW, there is a shortcut; just make clippy.