flux-pr-1791
sqlparser-rs (Rust) · W2 · GPT-5.3 Codex
Tests passed. 1/1 commands passed. Strength: strong.
env PATH=/root/.cargo/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin cargo test --all-featuresPartial score: 1/1
Trajectory
codex · partial order onlyprovider-native trajectory captured; validation and decision steps are appended with coarse ordering only
Quality
Equivalence Reasoning
behavioral
The patch only partially implements the intent. It adds optional tokens, but does not introduce a proper conditional-block representation for MSSQL `BEGIN...END` bodies (it encodes them as `Statement::StartTransaction`, which is semantically incorrect), keeps `else_block`/`if_block` shapes tied to old structures, and likely misparses `IF ... SELECT ... ELSE ...` because MSSQL alias-reservation handling for `ELSE`/`IF` was not added. It also does not reliably track actual CASE end tokens (captures presence, not robust token identity).
Code Review
The agent patch likely does not satisfy the intended change: it introduces MSSQL IF support but models BEGIN...END incorrectly, applies a brittle ELSE strategy, and only partially refactors conditional AST structures, creating high risk of behavioral mismatch and regressions.
The MSSQL IF parser maps BEGIN...END blocks to `Statement::StartTransaction`, which is semantically different from a conditional statement block and can break AST consumers and SQL re-serialization expectations.
ELSE handling is guarded by a special `semicolon_before_else` check and otherwise depends on prior statement parsing behavior, which is fragile for `IF cond SELECT ... ELSE SELECT ...` forms and can misparse when delimiters vary.
The patch adds optional tokens to existing structures but keeps old `ConditionalStatementKind`/flat statement vectors, diverging from a unified block model and increasing complexity/inconsistency across IF and CASE handling.
The dialect patch hooks custom IF parsing but does not add alias-reservation handling for IF/ELSE, leaving parser ambiguity edge cases unaddressed in T-SQL contexts.