feat(expr): add missing basic exprs for timestamptz and bytea

[xiangjinwu]

I hereby agree to the terms of the RisingWave Labs, Inc. Contributor License Agreement.

What's changed and what's your intention?

Added:

• timestamptz - timestamptz = interval (resolves bug: timestamptz - timestamptz = interval unimplemented #9906)
• bytea CMP bytea = bool where CMP is =, <> (!=), <, <=, >, >=, is [not] distinct from
• cast(bytea) = varchar
• octet_length(bytea) = int32 (same as length(bytea))
• bit_length(bytea) = int32

Not added:

• jsonb CMP jsonb (not meaningful, and our Ord is different from PG)
• cast(struct) = varchar (buggy Different display format for array/struct with pg #4769)
• cast(varchar) = struct (less useful expr: string to struct cast #7369)
• other bytea functions (eg position, substr, ||)

Checklist

• I have written necessary rustdoc comments
• I have added necessary unit tests and integration tests
• I have added fuzzing tests or opened an issue to track them. (Optional, recommended for new SQL features Sqlsmith: Sql feature generation #7934).
• My PR contains breaking changes. (If it deprecates some features, please create a tracking issue to remove them in the future).
• All checks passed in ./risedev check (or alias, ./risedev c)
• My PR changes performance-critical code. (Please run macro/micro-benchmarks and show the results.)

Documentation

• My PR contains user-facing changes.

Types of user-facing changes

• SQL commands, functions, and operators

Release note

Support some basic exprs for timestamptz and bytea:

• timestamptz - timestamptz = interval
• bytea CMP bytea = bool where CMP is =, <> (!=), <, <=, >, >=, is [not] distinct from
• cast(bytea) = varchar
• octet_length(bytea) = int32 (same as length(bytea))
• bit_length(bytea) = int32

[codecov]

Codecov Report

Merging #10462 (d1ad0f6) into main (43458ef) will decrease coverage by 0.01%.
The diff coverage is 44.18%.

@@            Coverage Diff             @@
##             main   #10462      +/-   ##
==========================================
- Coverage   70.51%   70.50%   -0.01%     
==========================================
  Files        1260     1260              
  Lines      215075   215113      +38     
==========================================
+ Hits       151651   151670      +19     
- Misses      63424    63443      +19     

Flag	Coverage Δ
rust	70.50% <44.18%> (-0.01%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
src/common/src/types/interval.rs	81.50% <0.00%> (-0.97%)	⬇️
src/expr/src/vector_op/timestamptz.rs	87.50% <14.28%> (-2.46%)	⬇️
src/expr/src/vector_op/length.rs	86.36% <64.28%> (-13.64%)	⬇️
src/expr/src/vector_op/cast.rs	91.49% <100.00%> (+0.01%)	⬆️
src/expr/src/vector_op/cmp.rs	80.10% <100.00%> (+0.44%)	⬆️

... and 5 files with indirect coverage changes

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more

[wangrunji0408]

tip: You can use generic function to unify them.

#[function("length(bytea) -> int32")]
#[function("octet_length(bytea) -> int32")]
#[function("octet_length(varchar) -> int32")]
pub fn octet_length(s: impl AsRef<[u8]>) -> i32 {
    s.as_ref().len() as i32
}