Apr 22, 2020
Aggregate Functions of SQL
Aggregate Functions are all about
Performing calculations on multiple rows
Of a single column of a table
And returning a single value.
The ISO standard defines five (5) aggregate functions namely;
1) COUNT 2) SUM 3) AVG 4) MIN 5) MAX
Why use aggregate functions.
From a business perspective, different organization levels have different information requirements. Top levels managers are…
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