--- title: Learn How to Write a Mini SQL Parser in Python (Step by... description: A comprehensive guide to building a SQL parser in Python using the ply library. Covers the two core stages of parsing: lexical analysis (tokenization) and... canonical: https://daily.dev/posts/learn-how-to-write-a-mini-sql-parser-in-python-step-by-step--ffbzydoey twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Learn How to Write a Mini SQL Parser in Python (Step by Step) | daily.dev og:description: A comprehensive guide to building a SQL parser in Python using the ply library. Covers the two core stages of parsing: lexical analysis (tokenization) and... og:url: https://daily.dev/posts/learn-how-to-write-a-mini-sql-parser-in-python-step-by-step--ffbzydoey og:image: https://api.daily.dev/og/posts/FFBzyDoEy.png og:image:alt: Learn How to Write a Mini SQL Parser in Python (Step by Step) og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Learn How to Write a Mini SQL Parser in Python (Step by Step) **[Python](https://daily.dev/sources/pythonforall)** · [@leapcell](https://daily.dev/leapcell) · 0 upvotes · 0 comments ## Summary A comprehensive guide to building a SQL parser in Python using the ply library. Covers the two core stages of parsing: lexical analysis (tokenization) and syntactic analysis (AST construction). Includes step-by-step implementation of a lexer and parser that can handle basic SELECT statements with FROM and WHERE clauses. Demonstrates how to convert SQL text into structured Abstract Syntax Trees and discusses limitations and advanced directions for production-ready parsers. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Don’t just attend KubeCon \+ CloudNativeCon, Merge Forward your experience\!](https://daily.dev/posts/don-t-just-attend-kubecon-cloudnativecon-merge-forward-your-experience--l0rpp73x8) · CNCF · 1 upvotes · 0 comments - [Announcing H2 2026 KCDs](https://daily.dev/posts/announcing-h2-2026-kcds-m96goajm1) · CNCF · 1 upvotes · 0 comments - [Two months of Open Community Groups](https://daily.dev/posts/two-months-of-open-community-groups-asf52zhbs) · CNCF · 0 upvotes · 0 comments - [CNCF Unveils Schedule for KubeCon \+ CloudNativeCon Europe 2026](https://daily.dev/posts/cncf-unveils-schedule-for-kubecon-cloudnativecon-europe-2026-ikhcoa5cb) · CNCF · 2 upvotes · 0 comments - [CNCF Debuts KubeCon \+ CloudNativeCon Japan 2026 Schedule](https://daily.dev/posts/cncf-debuts-kubecon-cloudnativecon-japan-2026-schedule-xp5pyudub) · CNCF · 1 upvotes · 0 comments --- Tags: [#compiler](https://daily.dev/tags/compiler), [#python](https://daily.dev/tags/python), [#sql](https://daily.dev/tags/sql) [View this post on daily.dev](https://daily.dev/posts/learn-how-to-write-a-mini-sql-parser-in-python-step-by-step--ffbzydoey) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"DiscussionForumPosting","mainEntityOfPage":"https://daily.dev/posts/learn-how-to-write-a-mini-sql-parser-in-python-step-by-step--ffbzydoey","headline":"Learn How to Write a Mini SQL Parser in Python (Step by Step)","text":"Shared: Learn How to Write a Mini SQL Parser in Python (Step by Step)","url":"https://daily.dev/posts/learn-how-to-write-a-mini-sql-parser-in-python-step-by-step--ffbzydoey","datePublished":"2026-01-17T20:27:31.709Z","dateModified":"2026-01-17T20:27:31.715Z","author":{"@type":"Person","name":"Leapcell","url":"https://daily.dev/leapcell","image":"https://media.daily.dev/image/upload/s--xzJnE2si--/f_auto/v1734958598/avatars/avatar_vaF9B8Z1fAKQvLZO74a8C","description":"leapcell.io: serverless web hosting / async task / redis","interactionStatistic":{"@type":"InteractionCounter","interactionType":{"@type":"EndorseAction"},"userInteractionCount":850}},"image":"https://media.daily.dev/image/upload/s--0_ODbtD2--/f_auto/v1722860399/public/Placeholder%2008","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"sharedContent":{"@type":"WebPage","url":"https://api.daily.dev/r/BXGvaxyEL"},"isPartOf":{"@type":"WebPage","url":"https://daily.dev/squads/pythonforall","name":"Python"}} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Python","item":"https://daily.dev/squads/pythonforall"},{"@type":"ListItem","position":3,"name":"Learn How to Write a Mini SQL Parser in Python (Step by Step)"}]} ```