Write a query to count of the number of cities in city table having a population larger than 10000. Summarize the .

Write a query to count of the number of cities in city table having a population larger than 10000. e. Let's break down the steps to formulate this SQL query. Here is my query: SELECT City, count(*) AS [Population] INTO #stats FROM [Customer] GROUP BY City SELEC May 15, 2025 · /*Query all columns for all American cities in the CITY table with populations larger than 100000. If there is more than one smallest or Jun 2, 2022 · 2. The CITY table is described as follows: Find the difference between the total number of CITY entries in the table and the number of distinct CITY entries in the Sep 2, 2016 · I have 2 tables, one is a list of countries (id, country) and another is the users (where the country column is the id of the country in the countries table). Query a count of the number of cities in CITY having a Population larger than 100,000. Sep 24, 2017 · -1 I have a table "countries" with columns -> name,continent,area,popualtion. com/challenges/revising-the-select-query/problem?isFullScreen=true In this HackerRank Functions in SQL problem solution, Query a count of the number of cities in CITY having a Population larger than 100000. The HAVING clause filters the groups to include only those with SUM(Quantity) greater than 5. city, count(*) from employees e, departments d, locations l, countr Feb 7, 2025 · SQL COUNT() with DISTINCT: SQL COUNT() function with DISTINCT clause eliminates the repetitive appearance of a same data. Oct 25, 2015 · 7 You can write many query to answer this question like: As I am considering the question as we have table named as STATION and we have to now finding the difference between the total number of CITY entries in the table and the number of distinct CITY entries in the table Query 1: select (count(city)-count(distinct city)) from station; Query 2: ------- HackerRank's SQL 'Basic Select' and 'Basic Join' ------- ---------- -- Basic Select -> Revising the Select Query I -- Query all columns for all American cities in the CITY table with populations larger than 100000. 10. Return dpt_name. select * from city where population >100000 and countrycode=’usa’; ### 2. Sep 25, 2025 · SQL JOINS Exercise, Practice and Solution: From the following tables write a SQL query to find the names of departments where more than two employees are employed. May 5, 2015 · I have the table 'Customers' with (customerID, firstname, lastname, town, state) and I am trying to create an MySQL query for finding how many customers live in each state. To-Do: Use count (*) would … Oct 15, 2025 · A city is big if it has an area bigger than 50K square km or a population of more than 15 million. -- Solution: SELECT * FROM city WHERE COUNTRYCODE = 'USA' AND population > 100000; ---------- -- Basic Select -> Revising the Select select count (customer_name) as 'Number of Customer', city, Customer_segment from cust_dimen group by city, customer_segment Find the customer order which has been sold at a loss Query the average population of all cities, rounded down to the nearest integer. I have a table of users, and in this table I have a country field telling where these people are from (i. I am trying to pull the countries that have more than 5 cities. Follow along as we It seems like you're asking for a SQL query to count the number of cities with a population larger than 100,000 from a table named "CITY". Apr 9, 2025 · In this post, we’ll explore a basic yet important SQL query: How many cities have a population larger than 100,000? This is a perfect use case for the COUNT() function and WHERE clause in SQL Oct 27, 2019 · Query a count of the number of cities in CITY having a Population larger than 100000 SELECT COUNT(NAME) FROM CITY WHERE POPULATION > 100000 Referring to the world database, what will the following SQL statement do? SELECT CountryCode, COUNT ( CountryCode ) FROM City GROUP BY CountryCode; Question options: Summarize the population, by taking the average of the population of all cities, in each country using CountryCode in the City Table Will count the number of cities in each country as listed in the City Table. ) Sep 14, 2010 · Use the HAVING, not WHERE clause, for aggregate result comparison. # 1 write a query to list all the cities and states from station table Aug 23, 2023 · This query returns all cities, as well as listing out the most populous city within each district. id order by population desc ) x group by 1 -- assumes id column of country table is column number 1 Rather than returning an aggregate for each group, this non-standard grouping (not all non-aggregated columns are grouped by) returns the first row for each group, so by Oct 21, 2021 · This article explains the use of the SQL COUNT() function. How can I do a SQL query to get something like: majana17 commented on Apr 29, 2021 -- Using count, get the number of cities in the USA (274) SELECT city. countryCode in city table = Code in country table ID in city table = capital in country table Write a query that displays the names of cities and their countries when the capital city is the Dec 12, 2024 · Write a query to list countries that have more than three official languages. I have a table like this: district city state population d1 c1 s1 2000 d2 c1 s1 10000 d3 c1 s1 400000 d1 c2 s2 500000 I want to count the cities having population greater than 410000. Right now I have: SELECT Country. CountryCode = country. From the following table, write a SQL query to find big cities name, population and area. The outer query then selects cities where the count of customers exceeds this average. Sep 26, 2025 · SQL SUBQUERIES Exercises on Inventory Database, Practice and Solution: From the following tables write a SQL query to count the number of customers with grades above the average in New York City. In a course of mine, we have been given tables containing cities and countries. The CountryCode for America is … — The Count Function Query a count of the number of cities in CITY having a Population larger than . "Sweden", "Italy", ). region_name, c. Jul 23, 2022 · Asked3 years ago Modified 3 years ago Viewed 424 times 1 This question already has answers here: SQL Query to get most populated ZIP code for a CITY in a STATE from my existing table with data (2 answers) Oracle return highest value of count (1 answer) Query the number of cities having populations larger than 100000. Combine HAVING with other aggregate functions for more complex queries. Show the SQL query you used. , Query all columns (attributes) for every row in the CITY table. Oct 15, 2025 · Challenges-1: From the following tables write a query in SQL to find the number of customer issued orders, number of orders they have issued along with the total order amount for each cities. Mar 31, 2024 · Query all columns for all American cities in the CITY table with populations larger than 100000. Summarize the Dec 2, 2013 · So MAX (population) is just one entry so it restricts the row number to 1 and because i added the continent, name, population columns, mysql just selects the first row from the table. Jan 15, 2025 · 9. The CITY table is described as follows: CITY Field Type ID NUMBER NAME VARCHAR2 (17) COUNTRYCODE VARCHAR2 (3) DISTRICT VARCHAR2 (20) POPULATION NUMBER 8. select*from CITY where POPULATION >=100000and COUNTRYCODE ='USA'; Jul 5, 2021 · HackerRank-Aggregation-Revising Aggregations - The Count Function less than 1 minute read Revising Aggregations - The Count Function Query a count of the number of cities in CITY having a Population larger than 100,000. Is it possible to make a single query Algorithm Problem Name: Sql - Revising the Select Query I Problem Link: https://www. The CITY table is described as follows: Click the card to flip 👆 SELECT * FROM CITY WHERE CountryCode = 'USA' AND Population > 100000; Click the card to flip 👆 Apr 7, 2021 · 0 My database has a table named customer with data in the following columns: id, first_name, last_name, and city. The Query all columns for all American cities in the CITY table with populations larger than 100000. Sep 2, 2020 · I want count total employees in each city/village here is with city only : select r. For this demonstration, we will create a students table and populate it with sample data. The CITY table is described as follows: Query a count of the number of cities in CITY with populations larger than 100,000. Apr 30, 2021 · I am currently searching for a SQL query that does the following: I have a table of all cities worldwide with their countries and population. This enables the correlated sub-query to process all cities per county then return one id, allowing the join on to the other cities reference to be on to exactly one row. Introduction to SQL COUNT function The SQL COUNT function is an aggregate function that returns the number of rows returned by a query. It covers some practical examples with real SQL queries. Step 1: Understand the Table Structure The CITY table has the following relevant fields: COUNTRYCODE (VARCHAR2) DISTRICT (VARCHAR2) POPULATION (NUMBER) Step 2: Define the Query Requirement We need to Jun 13, 2020 · Write a query which will return all city name, country name and number of customers with more customers than the average number of customers of all cities in ascending order. the table &quot;city&quot; (some columns) name cou Jul 31, 2024 · Welcome to Ray Vision! In today's tutorial, we tackle a HackerRank SQL challenge: counting the number of cities in a CITY table where the population is larger than 100,000. Query all columns for all American cities in the CITY table with populations larger than 100000. Name is Nov 27, 2021 · 8. , Query the names of all American cities in CITY with populations larger than 120000. country_id = c. The following SQL lists the number of customers in each country. */ SELECT COUNT (NAME) FROM CITY WHERE POPULATION > 100000; Study with Quizlet and memorize flashcards containing terms like Query all columns for all American cities in CITY with populations larger than 100000. g. countryCode AND country. Return grade and count. May 10, 2024 · Computer-science document from Jamia Millia Islamia, 4 pages, 1. : number of characters in the name). So if i now write down: SELECT continent, name, population, MAX(population) FROM country HAVING population = MAX(population); Query a count of the number of cities in CITY with populations larger than 100,000. : the name attribute) for employees in Employee having a salary greater than per month who have been employees for less than months. Write a query that prints a list of employee names (i. Query a count of the number of cities in CITY having a Population larger than 100000 . na /*Revising Aggregations - The Count Function*/ /*Query a count of the number of cities in CITY having a Population larger than 100,000. Oct 13, 2020 · HackerRank SQL Basic Select Revising the Select Query I Problem Query all columns for all American cities in the CITY table with populations larger than 100000. The CITY table is described as follows: Revising the Select Query 1: Easy Query all columns for all American cities in the CITY table with populations larger than 100000. Let's discuss it one by one. In above query we have used all the columns to find out the total number of records ( by using count (*) ) . The CITY table is described as follows: SELECT * FROM CITY I have a database called world. What are some best practices for using HAVING with SQL COUNT ()? Ensure correct placement of HAVING after GROUP BY. Input Format The CITY table is described as follows: Solution: select count (id) from # Weather Observation station The STATION table is described as follows: STATION Field Type ------------------------------- ID NUMBER CITY VARCHAR (21) STATE VARCHAR (21) LAT_N NUMBER LONG_W NUMBER Where LAT_N is the northern latitude and LONG_W is the western longitude. Input Format The CITY table is described as follows: Solution in MYSQL select count (*) from CITY WHERE POPULATION Jul 25, 2020 · HackerRank SQL Revising Aggregations — The Count Function Problem: Query a count of the number of cities in CITY having a Population larger than 100,000. Is HAVING supported in all SQL databases? Oct 8, 2025 · SQL SORTING and FILTERING Exercises on HR Database, Practice and Solution: From the following table, write a SQL query to count the number of cities in each country. and more. Use HAVING for filtering aggregate data and WHERE for filtering individual rows. Jul 12, 2025 · The query first groups data by Product and calculates the total quantity sold using SUM (). Return country ID and number of cities. e. what should the SQL query for it? Apr 28, 2024 · 2. Mar 5, 2017 · I need these two SQL Scripts into one: to get amount of customer per city and the total of customer per country from AdventureWorks database I almost have it done, the problem is that I need to make one single TABLE, having problems with Multiple COUNT 's. Summary: in this tutorial, you will learn how to use the SQL COUNT function to get the number of rows in a table. The SQL COUNT () Function The COUNT() function returns the number of rows that matches a specified criterion. Given we’re returning all cities, the most populous city is repeated in those cases where there’s more than one city within a district. In the country table, the continent is listed and the cities are matched to country by the country’s code. Select (count (city)-count (distinct (city)from station; 2. Revising Aggregations - The Count Function Query a count of the number of cities in CITY having a Population larger than 100 000. select name from city where population 1. Aug 19, 2023 · Query all columns for all American cities in the CITY table with populations larger than 100000. Let's say I want to find the name and population of the chosen country with the highest population. Query the NAME field for all American cities in the CITY table with populations larger than 120000. The CITY table is described as follows: Answer SELECT * FROM CITY WHERE POPULATION > 100000 AND COUNTRYCODE = 'USA' Aug 4, 2017 · Distinct is necessary if you want a distinct count of states for the country having cities. Find the difference between the total number of CITY entries in the table and the number of distinct CITY entries in the table. , Write a single query that will show what the average population is in all cities located in Germany. Like this: Now I need a table with the number of customers in each Distinct city. Query a count of the number of cities in CITY having a Population larger than 1000. How do I find the name of the city with the highest population (in syntax)? I've heard SQL Server is a little bit different from Aug 19, 2022 · Q1: Query all columns for all American cities in CITY with populations larger than 100,000. table HAVING COUNT(someField) > 1 Ideally, there should be a GROUP BY defined for proper valuation in the HAVING clause, but MySQL does allow hidden columns from the GROUP BY Is this in preparation for a unique constraint on someField? Looks like it should be Jul 23, 2025 · In this example, we will create a demo database and table and then write an SQL query to get the total number of rows in that table. . select count(population) from city where population>1000 Revising Aggregation - The Count function Problem Query a count of the number of cities in CITY having a Population larger than 100,000. (10 points) Your tasked to create a database with the Jan 3, 2022 · Query a count of the number of cities in CITY having a Population larger than . Returns city name, number of customers, number of orders and total order amount. Tables: City city_id, city, country_id, last_update Country country_id, country, last_update I think I am very close to getting t Solution: select * from city where countrycode = 'USA' and population > 100000; Query the NAME field for all American cities in the CITY table with populations larger than 120000. This database has two tables: city and country. Input Format The CITY table is described as follows: Solution: select count (id) from city where population Study with Quizlet and memorize flashcards containing terms like Write a single query that will show how many of the cities in the world database are in Germany. Question: 7. SELECT MAX(population) FROM countries; The example above returns the maximum population. The CITY table is described as follows: true### 1. Code GROUP BY continent My problem is that the city. Those cities should come in result set where four or more orders have been issued. Taking the query at face value: SELECT * FROM db. */ select * from city where Population > 100000 and countrycode = 'USA'; /*Query the NAME field for all American cities in the CITY table with populations larger than 120000. Oct 9, 2015 · I have two tables (User table and City Table) User Table: Column: Userid, username, package, cityid City Table: Column: CityID, Cityname etc I want to display total number of users per city. Revising the Select Query II Query the NAME field for all American cities in the CITY table with populations larger than 120000. Query all columns for all American cities in the CITY table with populations larger than 100000. Input Format The CITY table is described as follows: I am new to SQL. The CountryCode for America is USA SOLUTION 1: select*FROM CITY WHERE COUNTRYCODE = 'USA' AND POPULATION Jan 26, 2023 · This SQL query retrieves all cities with more customers than the average by using a subquery to first calculate the average number of customers per city. I want it to also see the name of the country with that population. name, COUNT(*) FROM city, country WHERE country. Input Format The CITY table is described as follows: --Query all columns for all American cities in the CITY table with populations larger than 100000. Query the number of cities having populations larger than 100000. The COUNT () function in SQL is used to get the number of rows with the SELECT statement. Name, MAX (city. Be sure to match table and column names to your database schema for accurate results. Give names, states, and areas of cities with names ending with 'City' and with areas greater than 10 but less than 50. Input Format The CITY table is described as follows: To locate all American cities in the CITY table with populations larger than 100000, use a SQL SELECT statement to filter rows based on the given conditions for COUNTRYCODE and POPULATION. code=city. country 's columns are: Code, name, countryPopulation, Capital. Query a list of CITY names from STATION with even ID numbers only. For example, you can use the COUNT function in the SELECT statement to get the number of employees, the number of employees in each department Jul 23, 2025 · In this article, we will discuss the overview of SQL query and our main focus will be on how to Find an Employee whose salary is equal to or greater than a specific number in SQL with the help of examples. hackerrank. Sep 6, 2020 · Query the two cities in STATION with the shortest and longest CITY names, as well as their respective lengths (i. Code = countrylanguage. At the moment, my query is as follows: SELECT continent, city. The CountryCode for America is USA. Use the BETWEEN operator. In our student table we have id field which is unique and auto incremented. Follow along as we Query a count of the number of cities in CITY having a Population larger than 100 000. Input Format The CITY table is described as follows: My solution ### Revising the Select Query-1 Query all columns for all American cities in CITY with populations larger than 100,000. CountryCode WHERE IsOfficial = 'T' GROUP BY Name HAVING COUNT (Language) > 3; -- 23. (joins, group by, having) SELECT Name AS Country, COUNT (Language) AS Number_of_Official_Languages FROM country JOIN countrylanguage ON country. I tried to group by city, calculate population of each city and then check if its population is greater than Jul 31, 2024 · Welcome to Ray Vision! In today's tutorial, we tackle a HackerRank SQL challenge: counting the number of cities in a CITY table where the population is larger than 100,000. Feb 11, 2018 · I have a test table which looks like: And I want to find the city with the max population. (Having two references to the same table also requires use of aliases. The DISTINCT can comes only once in a given select statement. Oct 13, 2014 · With mysql (only) there is a trick you can use: select * from ( select * from from country c join city d on d. Sep 7, 2021 · LIMIT 1 ) In this query there are two references to the cities table. My desired output is 2 as there are two cities, c1 and c2, matching the condition. Name, city. if each country has more than one city per state then distinct matters Apr 14, 2021 · Table is named employee and columns are city, salary and employee goal : in a single query , to count all the employees that earn >=1300 value less than <=1300 by city. It seems like you're asking for a SQL query to count the number of cities with a population larger than 100,000 from a table named "CITY". Sort your result by ascending employee_id. name='United States'; -- Find out what the population and average life expectancy for people in Argentina (ARG) is (37032000, 75. city 's columns are: name, ID, Population, countryCode. Apr 9, 2025 · In this post, we’ll explore a basic yet important SQL query: How many cities have a population larger than 100,000? This is a perfect use case for the COUNT() function and WHERE clause in SQL Problem Query a count of the number of cities in CITY having a Population larger than 100,000. HAVING The HAVING command is used instead of WHERE with aggregate functions. In this tutorial, you will learn about the SQL COUNT () function with the help of examples. country_name, l. Only include countries with more than 5 customers: Nov 17, 2015 · I am using the Mondial database schema and am trying to find: For each country, find city that has the highest population and the city's population. Sep 14, 2024 · HackerRank SQL | Basic Select Revising the Select Query I : Query all columns for all American cities in the CITY table with populations larger than 100000. name, country. Input Format The CITY table is described as follows: #11 HackerRank -SQL. 10000) SQL - HackerRank Query all columns for all American cities in the CITY table with populations larger than 100000. Query all columns for all American cities in CITY with populations larger than 100000. population) FROM city LEFT JOIN country ON city. (10 points) Query all columns for all American cities in the CITY table with populations larger than 100000. */ Select name from city where population > 120000 Jun 30, 2018 · So I'm using SQL Server with two columns named City and Population. The COUNTRYCODE for America is USA. aani0z gdeeufgy tt ndxgep fli fw5d3 ptb mgwe rps xvvt1k