Revise example usage section headings

[Tchoupinax]

Hello,

Just reading the documentation and was confused by given example. They are pretty similar. I was even thinking about merging them and only keep one example with operator and one with SQL.

At least, example title should be renamed with example 2 or #2 to be less confusing IMO.

What do you think?

Thanks for your work!

[nuno-faria]

Thanks for you contribution @Tchoupinax. I agree that these are confusing. Since they are used to demonstrate the case behavior of the previous section, I think we can even convert them to items instead of sections, like so:

## Identifiers and Capitalization
...

- Using the SQL API:
...

- Using the DataFrame API:
...

Also, I think we should mention that this behavior can be disabled by setting the datafusion.sql_parser.enable_ident_normalization config to false.

[github-actions]

Thank you for your contribution. Unfortunately, this pull request is stale because it has been open 60 days with no activity. Please remove the stale label or comment or this will be closed in 7 days.

[Tchoupinax]

Thanks @nuno-faria — applied your suggestions:

• Converted the SQL and DataFrame examples under Identifiers and Capitalization to list items instead of extra sections
• Mentioned that this behavior can be disabled with datafusion.sql_parser.enable_ident_normalization = false, with a link to the configuration settings page

[Tchoupinax]

production on the left, branch on the right

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 81.24%. Comparing base (c429919) to head (aed9c28).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

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##             main   #22909      +/-   ##
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- Coverage   81.24%   81.24%   -0.01%     
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  Files        1113     1113              
  Lines      392744   392744              
  Branches   392744   392744              
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- Misses      54900    54907       +7     
- Partials    18754    18759       +5     

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[nuno-faria]

Thanks @Tchoupinax.

[alamb]

🚀