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Editorial Team
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Asked: 2026-05-26T14:39:52+00:00

I’m looking for good SQL parser. One that will work with subselects, non-select queries,

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I’m looking for good SQL parser. One that will work with subselects, non-select queries, CTE, window functions and other legal SQL elements.

Result would be some kind of abstract syntax tree, that I could later on work on.

Language is mostly irrelevant, as I am willing to learn new language just to use the library, if it exists.

I know that it is technically possible to extract parser from some open source database, but it’s far from easy (at least for the parser of PostgreSQL which is what I need).

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  1. Editorial Team

    There’s a non-validating SQL parser in Python: python-sqlparse. The tokens are exposed as objects. I doubt if they support “other legal SQL statements”, window functions, and the like though as those are controlled by vendor specific grammars and no vendor is technically fully compliant with SQL standards.

    Um (knowing that you’re willing to learn a new language), why would you need to work on the syntax tree? If you need some magic in dealing with the database, probably you don’t need to reinvent the wheel: Python got a fantastic database toolkit – SQL ALchemy.

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