Use sql builder to construct queries #9
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PeterKeDer
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houqp
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Jun 18, 2025
| "pyarrow==17.0.0", | ||
| "ipython==8.5.0", | ||
| "typing_extensions==4.13.2", | ||
| "pypika>=0.48.0", |
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This is a huge dependency, sure we want to use it here? SQL injection is something we should check for when processing untrusted user content. I would expect internal code to be trusted code, after all, if the programmer is malicious, they can also submit code to by pass all these safety checks in the same PR.
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Haven't reviewed this PR yet but previously the attack vector was type confusion.
If a value was passed in that wasn't of a type that's supported it would get stringified and could then be susceptible.
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okay, that's a better reason for doing more validation here, but can this be checked with type annotation instead?
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Use a SQL query builder to construct datafusion queries so there is less chance of misuse through SQL injections.
This adds a new dependency on
PyPikawhich is used to construct the SQL queries. This is the only popular SQL builder I found that generates plain string SQL (instead of using parameterization).This changes the behavior of some filters. Namely, filtering an int column by string will no longer work, e.g.
(it would have worked in the previous version because
'123'is directly interpolated into the query string)