SQL Tutorial - Full Database Course for Beginners

i_simplify on Instagram: "Using GROUP BY, we can divide data into groups based on the values in a column and perform calculations on each group. For example – finding the average marks of boys and girls separately! 😎 🧠 Topic Notes: Topic: SQL GROUP BY The GROUP BY keyword divides data into separate groups based on the values in a specific column. We use aggregation functions like AVG, SUM, COUNT, MAX, and MIN to perform calculations on each group. Syntax: SELECT column_name, aggregate_function

SQL入門編1:データベースを知ろう