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Site any two differences between Single Row Functions and Aggregate Functions.

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Question

Site any two differences between Single Row Functions and Aggregate Functions.

Distinguish Between
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Solution

Single Row Functions Aggregate Functions
Single row functions operate on individual rows and return a single value per row. Aggregate functions operate on groups of rows and return a single result for each group.
It can be used in SELECT, WHERE, and ORDER BY clause. It can be used in the SELECT clause only.
UPPER(name) → Converts each name to uppercase SUM(salary) → Returns total salary for all or a group of employees
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Functions in SQL
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Chapter 9: Structured Query Language (SQL) - Exercise [Page 176]

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NCERT Computer Science [English] Class 12
Chapter 9 Structured Query Language (SQL)
Exercise | Q 1. c) | Page 176

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Consider the table STUDENT given below:

RollNo Name Class DOB Gender City Marks
1 Anand XI 6/6/97 M Agra 430
2 Chetan XII 7/5/94 M Mumbai 460
3 Geet XI 6/5/97 F Agra 470
4 Preeti XII 8/8/95 F Mumbai 492
5 Saniyal XII 8/10/95 M Delhi 360
6 Maakhiy XI 12/12/94 F Dubai 256
7 Neha X 8/12/95 F Moscow 324
8 Nishant X 12/6/95 M Moscow 429

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(i) Select Gender, avg(Marks) from STUDENT where Class= "XI" group by Gender;

(ii) Select Gender, avg(Marks) from STUDENT group by Gender where Class="XI";

(iii) Select Gender, avg(Marks) group by Gender from STUDENT having Class="XI";

(iv) Select Gender, avg(Marks) from STUDENT group by Gender having Class = "XI";

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8 Nishant X M Moscow 429
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