feat: enable empty range by

[Taylor-lagrange]

I hereby agree to the terms of the GreptimeDB CLA

What's changed and what's your intention?

Enable case BY () like

SELECT 
    sum(metrics) RANGE '10m' FILL MAX
FROM t ALIGN '1h' by () FILL NULL;

The user explicitly specifies that the aggregation key is empty. In this case, there is no aggregation key. All data will be aggregated into a group, which is equivalent to using a random constant as the aggregation key. Therefore, in this case, the constant 1 is used directly as the aggregation key. The sql is rewrite by sqlparser to:

SELECT 
    sum(metrics) RANGE '10m' FILL MAX
FROM t ALIGN '1h' by (1) FILL NULL;

The work is mainly done by sqlparser. Here we just simply replace the version of sqlparser and add test cases.

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)

GreptimeTeam/sqlparser-rs#8

[codecov]

Codecov Report

Merging #2697 (4125b4e) into develop (395632c) will decrease coverage by 0.45%.
The diff coverage is n/a.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #2697      +/-   ##
===========================================
- Coverage    85.13%   84.68%   -0.45%     
===========================================
  Files          762      762              
  Lines       121864   121864              
===========================================
- Hits        103746   103205     -541     
- Misses       18118    18659     +541     

[fengjiachun]

LGTM