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목록전체 글 보기 (287)
TEAM EDA
You are given two tables: Students and Grades. Students contains three columns ID, Name and Marks. Grades contains the following data: Ketty gives Eve a task to generate a report containing three columns: Name, Grade and Mark. Ketty doesn't want the NAMES of those students who received a grade lower than 8. The report must be in descending order by grade -- i.e. higher grades are entered fir..
Given the CITY and COUNTRY tables, query the names of all the continents (COUNTRY.Continent) and their respective average city populations (CITY.Population) rounded down to the nearest integer. Note: CITY.CountryCode and COUNTRY.Code are matching key columns. Input Format The CITY and COUNTRY tables are described as follows: 풀이 SELECT O.CONTINENT, FLOOR(AVG(C.POPULATION)) FROM CITY AS C JOIN COU..
Given the CITY and COUNTRY tables, query the names of all cities where the CONTINENT is 'Africa'. Note: CITY.CountryCode and COUNTRY.Code are matching key columns. Input Format The CITY and COUNTRY tables are described as follows: 풀이 SELECT C.NAME FROM CITY AS C JOIN COUNTRY AS O ON C.COUNTRYCODE = O.CODE WHERE O.CONTINENT = 'Africa';
Given the CITY and COUNTRY tables, query the sum of the populations of all cities where the CONTINENT is 'Asia'. Note: CITY.CountryCode and COUNTRY.Code are matching key columns. Input Format The CITY and COUNTRY tables are described as follows: 풀이 SELECT SUM(C.POPULATION) FROM CITY AS C JOIN COUNTRY AS O ON C.COUNTRYCODE = O.CODE WHERE O.CONTINENT = 'Asia';
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 result by ascending employee_id. Input Format The Employee table containing employee data for a company is described as follows: where employee_id is an employee's ID number, name is the..
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 number, name is their name, months is the total number of months they've been working for the company, and salary is their monthly ..
Query the Name of any student in STUDENTS who scored higher than 75 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, Robby, etc.), secondary sort them by ascending ID. Input Format The STUDENTS table is described as follows: The Name column only contains uppercase (A-Z) and lowercase..
The STATION table is described as follows: where LAT_N is the northern latitude and LONG_W is the western longitude. Q1. Query a list of CITY and STATE from the STATION table. SELECT CITY, STATE FROM STATION; Q3. Query a list of CITY names from STATION for cities that have an even ID number. Print the results in any order, but exclude duplicates from the answer. SELECT CITY FROM STATION WHERE ID..
Query the names of all the Japanese cities in the CITY table. The COUNTRYCODE for Japan is JPN. The CITY table is described as follows: SELECT NAME FROM CITY WHERE COUNTRYCODE = 'JPN';