khushishukla2813 opened a new pull request, #14986:
URL: https://github.com/apache/datafusion/pull/14986
## Which issue does this PR close?
Closes #14437
## Rationale for this change
The current SQL syntax error messages in DataFusion lack detailed context,
making debugging difficult for users.
This PR improves error reporting by:
Showing **unexpected tokens** in the error message.
Displaying **exact line and column numbers** for better debugging.
Providing **helpful hints** when possible.
## What changes are included in this PR?
Enhanced `parser_err!` macro** to include **token details, line, and column.
Modified `expected` function** to return more **precise error locations.
Added a test case (`test_parser_error_message`)** to verify the improved
error messages.
## Are these changes tested?
Yes ✅
- A new test case was added in `parser.rs` to check:
- Correct error message format.
- Proper token identification in error messages.
- Correct line and column output.
## Are there any user-facing changes?
Yes ✅
- Error messages now provide clearer debugging information.
- No breaking changes to existing APIs.
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