osipovartem opened a new pull request, #2510:
URL: https://github.com/apache/datafusion-sqlparser-rs/pull/2510
## What does this PR do?
Preserves the reluctant modifier on Snowflake/SQL `MATCH_RECOGNIZE`
quantifiers. Previously, `A*?` was represented as `(A*)?`, changing a reluctant
zero-or-more quantifier into a nested optional repetition.
The AST now represents this as `Repetition(A, Reluctant(ZeroOrMore))`.
Existing `Repetition(pattern, quantifier)` construction remains unchanged,
while the added `Reluctant` quantifier wrapper also covers `+?`, `??`, and
range forms such as `{2,4}?`. Stacked quantifiers that are not the single
reluctant suffix are rejected.
## Tests
- `cargo +1.95.0 test --offline --all-features match_recognize`
- `cargo +1.95.0 clippy --offline --all-targets --all-features -- -D
warnings`
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