Write a query to print all prime numbers less than or equal to 1000. Print your result on a single line, and use the ampersand (&) character as your separator (instead of a space). For...
A gene string can be represented by an 8-character long string, with choices from ‘A’, ‘C’, ‘G’, and ‘T’. Suppose we need to investigate a mutation from a gene string start to a gene string end where one mutation is defined as...
Query the difference between the maximum and minimum populations in CITY. Input Format The CITY table is described as follows: ———-SOLUTION———- SELECT (MAX(population) – MIN(population)) FROM city;
Query the sum of the populations for all Japanese cities in CITY. The COUNTRYCODE for Japan is JPN. Input Format The CITY table is described as follows: ———-SOLUTION———- SELECT SUM(population) FROM city WHERE countrycode = ‘JPN’;
Query the average population for all cities in CITY, rounded down to the nearest integer. Input Format The CITY table is described as follows: ———-SOLUTION———- SELECT ROUND(AVG(population)) FROM city;
Query the average population of all cities in CITY where District is California. Input Format The CITY table is described as follows: ———-SOLUTION———- SELECT AVG(population) FROM city WHERE district = ‘California’;
Query the total population of all cities in CITY where District is California. Input Format The CITY table is described as follows: ———-SOLUTION———- SELECT SUM(population) FROM city WHERE district = ‘California’;
Query a count of the number of cities in CITY having a Population larger than 100000. Input Format The CITY table is described as follows: SELECT COUNT(name) FROM city WHERE population > 100000
Amber’s conglomerate corporation just acquired some new companies. Each of the companies follows this hierarchy: Given the table schemas below, write a query to print the company_code, founder name, total number of lead managers, total number of senior managers, total number...
In this post, I will guide you through how to write an airflow scheduler for a practical use case. Overview Airflow is simply a tool for us to programmatically schedule and monitor our workflows....
You are given a table, BST, containing two columns: N and P, where N represents the value of a node in Binary Tree, and P is the parent of N. Write a query to find the node type of Binary Tree ordered by the value of the...
Pivot the Occupation column in OCCUPATIONS so that each Name is sorted alphabetically and displayed underneath its corresponding Occupation. The output column headers should be Doctor, Professor, Singer, and Actor, respectively. Note: Print NULL when there are no more names corresponding to an occupation. Input Format The OCCUPATIONS table is described...
Generate the following two result sets: Query an alphabetically ordered list of all names in OCCUPATIONS, immediately followed by the first letter of each profession as a parenthetical (i.e. enclosed in parentheses). For example:AnActorName(A),ADoctorName(D), AProfessorName(P), and ASingerName(S). Query the...
Write a query identifying the type of each record in the TRIANGLES table using its three side lengths. Output one of the following statements for each record in the table: Equilateral: It’s a triangle with 3 sides of equal...
Write a query that prints a list of employee names (i.e.: the name attribute) for employees in Employee having a salary greater than $2000 per month who have been employees for less than 10 months. Sort your...
Write a query that prints a list of employee names (i.e.: the name attribute) from the Employee table in alphabetical order. Input Format The Employee table containing employee data for a company is described as follows: where employee_id is an employee’s ID...
Query the Name of any student in STUDENTS who scored higher than Marks. Order your output by the last three characters of each name. If two or more students both have names ending in the same last three characters (i.e.: Bobby,...
Query the list of CITY names from STATION that do not start with vowels and do not end with vowels. Your result cannot contain duplicates. Input Format The STATION table is described as follows: where LAT_N is the northern latitude and LONG_W is the western longitude. ———-SOLUTION———- SELECT...
Query the list of CITY names from STATION that either do not start with vowels or do not end with vowels. Your result cannot contain duplicates. Input Format The STATION table is described as follows: where LAT_N is the northern latitude and LONG_W is...
Query the list of CITY names from STATION that do not end with vowels. Your result cannot contain duplicates. Input Format The STATION table is described as follows: where LAT_N is the northern latitude and LONG_W is the western longitude. ———-SOLUTION———- SELECT DISTINCT CITY FROM...
Query the list of CITY names from STATION that do not start with vowels. Your result cannot contain duplicates. Input Format The STATION table is described as follows: where LAT_N is the northern latitude and LONG_W is the western longitude. SELECT DISTINCT CITY FROM STATION WHERE...
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