> Implements aggregate functions.APPROX_COUNT_DISTINCTReturns the approximate number of rows that contain distinct values of expression.SELECT APPROX_COUNT_DISTINCT(manager_id) AS "Active Managers"FROM employees;Active Managers18From the given below URL implements these aggregate functions:AVGCOUNTFIRSTМАХMINSTDDEVSUMVARIANCE

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From the given below URL implements these aggregate functions AVG COUNT FIRST МAX MIN STDDEV SUM VARIANCE

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

> Implements aggregate functions.
APPROX_COUNT_DISTINCT
Returns the approximate number of rows that contain distinct values of expression.
SELECT APPROX_COUNT_DISTINCT(manager_id) AS "Active Managers"
FROM employees;
Active Managers
18
From the given below URL implements these aggregate functions:
AVG
COUNT
FIRST
МАХ
MIN
STDDEV
SUM
VARIANCE

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