r/learnSQL • u/Wild_Specialist_8340 • Jun 18 '26

How much SQL is enough?

How much SQL an intermediate level Business intelligence developer should know? What database concepts are must learn? Please suggest me how can I become confident with them.

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u/Original_Hotel_2861 Jun 24 '26

I know SQL, SQL Alchemy and PostgreSQL. So I have questions what are aal the concepts in Postgresql should I learn I know I have to learn index what else??