HR-SQL Weather Observation Station 4

1 개요[ | ]

해커랭크 SQL
문제	DB2	MS SQL	MySQL	Oracle
HR-SQL Basic Select e
HR-SQL Revising the Select Query I
HR-SQL Revising the Select Query II
HR-SQL Select All
HR-SQL Select By ID
HR-SQL Japanese Cities' Attributes
HR-SQL Japanese Cities' Names
HR-SQL Weather Observation Station 1
HR-SQL Weather Observation Station 3
HR-SQL Weather Observation Station 4
HR-SQL Weather Observation Station 5
HR-SQL Weather Observation Station 6
HR-SQL Weather Observation Station 7
HR-SQL Weather Observation Station 8
HR-SQL Weather Observation Station 9
HR-SQL Weather Observation Station 10
HR-SQL Weather Observation Station 11
HR-SQL Weather Observation Station 12
HR-SQL Higher Than 75 Marks
HR-SQL Employee Names
HR-SQL Employee Salaries

sql

Copy

SELECT COUNT(CITY)-COUNT(DISTINCT CITY)
FROM STATION;

sql

Copy

SELECT COUNT(CITY)-COUNT(DISTINCT CITY)
FROM STATION;

sql

Copy

SELECT COUNT(CITY)-COUNT(DISTINCT CITY)
FROM STATION;

sql

Copy

SELECT COUNT(CITY)-COUNT(DISTINCT CITY)
FROM STATION;