Add og image for sql

src/data/guides/sql-how-long-to-learn.md

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 seo:
   title: How Long Does It Take to Learn SQL? (An Expert's Take)
   description: How long does it take to learn SQL? A seasoned expert shares what to expect, from basics to job-ready skills.
+  ogImageUrl: https://assets.roadmap.sh/guest/how-long-does-it-take-to-learn-sql-4o4jz.jpg
 isNew: true
 type: 'textual'
 date: 2025-06-26
@@ -18,6 +19,8 @@ tags:
   - 'guide-sitemap'
 ---
 
+![How Long Does It Take to Learn SQL? (An Expert's Take)](https://assets.roadmap.sh/guest/how-long-does-it-take-to-learn-sql-4o4jz.jpg)
+
 With steady practice, you can start grasping basic SQL concepts in just a few days, grow confident writing queries within a month, and reach proficiency in advanced SQL concepts in three to six months.
 
 However, before you mark your calendar, remember this timeline does not apply to everyone.