--- title: Learn SQL Once, Use It for 30 Years | daily.dev description: SQL is uniquely durable among programming languages because it is grounded in relational algebra — a mathematical foundation that does not change with trends.... canonical: https://daily.dev/posts/ifuacda78 twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Learn SQL Once, Use It for 30 Years | daily.dev og:description: SQL is uniquely durable among programming languages because it is grounded in relational algebra — a mathematical foundation that does not change with trends.... og:url: https://daily.dev/posts/ifuacda78 og:image: https://api.daily.dev/og/posts/iFuaCDa78.png og:image:alt: Post cover image 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 SQL Once, Use It for 30 Years **[Zero To Mastery](https://daily.dev/sources/zerotomastery)** · [@aldopaganijr](https://daily.dev/aldopaganijr) · 352 upvotes · 34 comments ## Summary SQL is uniquely durable among programming languages because it is grounded in relational algebra — a mathematical foundation that does not change with trends. A query written in 1995 runs identically on PostgreSQL today, while JavaScript frameworks have cycled through multiple mental models in the same period. Junior developers are advised to invest 40 hours learning real SQL (joins, subqueries, window functions, query plans) for career-long returns. The tradeoff is acknowledged: SQL's backwards compatibility comes with accumulated warts like NULL's three-valued logic, verbose GROUP BY, inconsistent date handling, and vendor dialects — but these are the price of stability. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Community discussion Top comments from developers on daily.dev. **@germancarlossuarez** · 50 upvotes > A classmate told me when I was a university student: "Learn SQL". 30 years later I say: "you were right" **@qwertydiy** · 28 upvotes > SQL > ORM **@baptistecrouzet** · 27 upvotes > With a good query you make your data speak, and often find the root cause of many bugs **@puppy** · 19 upvotes > So true! I don't think there's ever been a real software engineering job I've worked at where there wasn't a need to interact with SQL in some capacity whether directly, or I guess nowadays through MCP servers! Something beautiful about constructing that time optimized query though =P And building out UML diagrams for tables <3 **@ajaychoudhary80** · 18 upvotes > SQL's longevity comes from being rooted in mathematics, not trends. ## 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: [#javascript](https://daily.dev/tags/javascript), [#sql](https://daily.dev/tags/sql) [View this post on daily.dev](https://daily.dev/posts/ifuacda78) ```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/ifuacda78","headline":"Learn SQL Once, Use It for 30 Years","text":"Shared: Learn SQL Once, Use It for 30 Years","url":"https://daily.dev/posts/ifuacda78","datePublished":"2026-06-17T07:30:42.037Z","dateModified":"2026-06-17T07:30:42.040Z","author":{"@type":"Person","name":"Aldo Pagani Jr.","url":"https://daily.dev/aldopaganijr","image":"https://lh3.googleusercontent.com/a/ACg8ocK1atgNHO1tmBQCnztPCdi0XnnEo-5MIRZqm99FCh05I2gPL_vt=s96-c","description":"Helping people start careers in tech.","interactionStatistic":{"@type":"InteractionCounter","interactionType":{"@type":"EndorseAction"},"userInteractionCount":9810}},"image":"https://media.daily.dev/image/upload/s--1KxV4ohY--/f_auto/v1722860400/public/Placeholder%2007","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":352},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":34}],"sharedContent":{"@type":"WebPage","url":"https://api.daily.dev/r/V6XY34sty"},"comment":[{"@type":"Comment","text":"A classmate told me when I was a university student: “Learn SQL”. 30 years later I say: “you were right”","datePublished":"2026-06-17T14:35:40.816Z","url":"https://daily.dev/posts/iFuaCDa78#c-eLU3uNX8g","author":{"@type":"Person","name":"German Carlos Suarez","url":"https://daily.dev/germancarlossuarez","image":"https://lh3.googleusercontent.com/a/ACg8ocLmkjKXwimeDCxdmBrULMyymVyRjcJ2QNtHmeiMZv9KuQ_UxA=s96-c"},"interactionStatistic":{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":50}},{"@type":"Comment","text":"SQL > ORM","datePublished":"2026-06-17T19:01:06.760Z","url":"https://daily.dev/posts/iFuaCDa78#c-nEIlC1Nhn","author":{"@type":"Person","name":"Rene Yibowei","url":"https://daily.dev/qwertydiy","image":"https://media.daily.dev/image/upload/s--QlvtioAW--/f_auto/v1746524446/avatars/avatar_aTUl3chxFyPngKtboGisL"},"interactionStatistic":{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":28}},{"@type":"Comment","text":"With a good query you make your data speak, and often find the root cause of many bugs","datePublished":"2026-06-17T19:23:33.969Z","url":"https://daily.dev/posts/iFuaCDa78#c-UtmDFUqw5","author":{"@type":"Person","name":"Baptiste Crouzet","url":"https://daily.dev/baptistecrouzet","image":"https://avatars0.githubusercontent.com/u/26898487?v=4"},"interactionStatistic":{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":27}},{"@type":"Comment","text":"So true! I don’t think there’s ever been a real software engineering job I’ve worked at where there wasn’t a need to interact with SQL in some capacity whether directly, or I guess nowadays through MCP servers! Something beautiful about constructing that time optimized query though =P And building out UML diagrams for tables <3","datePublished":"2026-06-18T02:55:06.300Z","url":"https://daily.dev/posts/iFuaCDa78#c-FqfslUK7m","author":{"@type":"Person","name":"Sierra Layla Vithica","url":"https://daily.dev/puppy","image":"https://media.daily.dev/image/upload/s--10uW8345--/f_auto/v1781470592/avatars/avatar_fSoHwX6emdcRFMU5GE7Nb?_a=BAMAMiWQ0"},"interactionStatistic":{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":19}},{"@type":"Comment","text":"SQL’s longevity comes from being rooted in mathematics, not trends.","datePublished":"2026-06-18T03:03:05.463Z","url":"https://daily.dev/posts/iFuaCDa78#c-TVfA3qJpQ","author":{"@type":"Person","name":"Ajay Choudhary","url":"https://daily.dev/ajaychoudhary80","image":"https://media.daily.dev/image/upload/s--WkX8wDW2--/f_auto/v1780989706/avatars/avatar_QNZlI2SgVnNSx5PSRpCVx?_a=BAMAMiWQ0"},"interactionStatistic":{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":18}}],"isPartOf":{"@type":"WebPage","url":"https://daily.dev/squads/zerotomastery","name":"Zero To Mastery"}} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Zero To Mastery","item":"https://daily.dev/squads/zerotomastery"},{"@type":"ListItem","position":3,"name":"Learn SQL Once, Use It for 30 Years"}]} ```