PSQL queryPlease explain thank you!! Connect to the world database.Query the city table.Part 1) Write a query to sum up city populations and organize rows by the 2nd letter of the city's country code. Include a count of countriesrepresented by each row. Label results to exactly match the below query:country_code_middle_letterI total populationNZYO > RE0VWLZMMDEGBUXTMPHHDEKSA(25 rows)136512318 |9556366 I102877005 I2139257 I37936243817023091149521028380 17213220518 I6420266424 I6812955315 I 4344925343 I 108123677350 I37457382033 I14627352714 I896490201 |26700 |122782784 |841147304 |579198118 I 255country_count7742928 I228448180 I 557HANNOM29123630527 I 32183561900 I26336832 I100166757 I87929719 I 23272364Part 2) There are 26 letters in the alphabet. Why does this query not return 26 rows?

Write a query to sum up city populations and organize rows by the 2nd letter of the city's country…

Answered: PSQL query Please explain thank you!!

Engineering

Computer Science

PSQL query Please explain thank you!!

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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