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오늘도 배운다

문제 Query the sum of Northern Latitudes (LAT_N) from STATION having values greater than 38.7880 and less than 137.2345. Truncate your answer to 4 decimal places. 제출답안(MySQL) SELECT ROUND(SUM(lat_n),4) FROM station WHERE lat_n >38.7880 AND lat_n

문제 We define an employee's total earnings to be their monthly salary * months worked, and the maximum total earnings to be the maximum total earnings for any employee in the Employee table. Write a query to find the maximum total earnings for all employees as well as the total number of employees who have maximum total earnings. Then print these values as space-separated integers. 제출답안(MySQL) SE..

문제 Samantha was tasked with calculating the average monthly salaries for all employees in the EMPLOYEES table, but did not realize her keyboard's 0 key was broken until after completing the calculation. She wants your help finding the difference between her miscalculation (using salaries with any zeros removed), and the actual average salary. Write a query calculating the amount of error (i.e.: ..
문제 Generate the following two result sets: 1. 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). 2. Query the number of ocurrences of each occupation in OCCUPATIONS. Sort the occurrences ..

문제 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 sides of equal length. - Isosceles: It's a triangle with sides of equal length. - Scalene: It's a triangle with sides of differing lengths. - Not A Triangle: The given values of A, B, and..

문제 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 lowerc..

문제 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: 제출답안(MySQL) SELECT DISTINCT(city) FROM station WHERE city REGEXP '^[^aeiou].*[^aeiou]$' 풀이(MySQL) 더보기 MySQL 정규표현식 참고자료 문제 바로가기(MySQL)

문제 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: 제출답안(MySQL) SELECT DISTINCT(city) FROM station WHERE city REGEXP '^[^aeiou]|[^aeiou]$' 풀이(MySQL) 더보기 MySQL 정규표현식 참고자료 문제 바로가기(MySQL)