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Thanks for the pull request.

Please describe what sort of issue you are trying to solve with this change.

FYI, this list of keywords that you edited is supposed to only include reserved keywords, and COMMENT is not a reserved keyword in PostgreSQL.

I think a better fix for this is to add COMMENT ON to the tabularOnelineClauses section in postgresql.formatter.ts

Though in general I should point out that SQL Formatter is fundamentally limited when it comes to distinguishing keywords from non-keywords, because it depends on the context whether something is a keyword or not. Like you could use comment as the name of a column or table, and then you would not want it to be capitalized. But because SQL Formatter doesn't fully parse the SQL, it can't tell the difference. And so there are many-many more keywords in PostgreSQL that this formatter isn't able to correctly identify as keywords.

I'd be happy to accept a PR with that change. For today I'm going to sleep :)

FYI, if you're looking for a formatter that doesn't have this sort of limitation, I suggest you check out prettier-plugin-sql-cst

Fixed it myself. Closing this.

Thank you!