Added sql code

ImAkshayad · web-flow · commit 7a24dabf56a0 · 2024-09-10T15:47:53.000+05:30
diff --git a/README.md b/README.md
@@ -40,6 +40,22 @@
             - [Select all](https://www.hackerrank.com/challenges/select-all-sql/problem?isFullScreen=true) | [Solution](hackerrank/sql/basic_select/select_all.sql)
             - [Select by ID](https://www.hackerrank.com/challenges/select-by-id/problem?isFullScreen=true) | [Solution](hackerrank/sql/basic_select/select_by_id.sql)
             - [Japanese cities' attributes](https://www.hackerrank.com/challenges/japanese-cities-attributes/problem?isFullScreen=true) | [Solution](hackerrank/sql/basic_select/japanese_cities_attributes.sql)
+            - [Japanese cities' names](https://www.hackerrank.com/challenges/japanese-cities-name/problem?isFullScreen=true) | [Solution](hackerrank/sql/basic_select/japanese_cities_names.sql)
+            - [Weather observation station 1](https://www.hackerrank.com/challenges/weather-observation-station-1/problem?isFullScreen=true) | [Solution](hackerrank/sql/basic_select/weather_observation_station_1.sql)
+            - [Weather observation station 2]() | [Solution]()
+            - [Weather observation station 3](https://www.hackerrank.com/challenges/weather-observation-station-3/problem?isFullScreen=true) | [Solution](hackerrank/sql/basic_select/weather_observation_station_3.sql)
+            - [Weather observation station 4](https://www.hackerrank.com/challenges/weather-observation-station-4/problem?isFullScreen=true) | [Solution](hackerrank/sql/basic_select/weather_observation_station_4.sql)
+            - [Weather observation station 5]() | [Solution]()
+            - [Weather observation station 6](https://www.hackerrank.com/challenges/weather-observation-station-6/problem?isFullScreen=true) | [Solution](hackerrank/sql/basic_select/weather_observation_station_6.sql)
+            - [Weather observation station 7](https://www.hackerrank.com/challenges/weather-observation-station-7/problem?isFullScreen=true) | [Solution](hackerrank/sql/basic_select/weather_observation_station_7.sql)
+            - [Weather observation station 8](https://www.hackerrank.com/challenges/weather-observation-station-8/problem?isFullScreen=true) | [Solution](hackerrank/sql/basic_select/weather_observation_station_8.sql)
+            - [Weather observation station 9](https://www.hackerrank.com/challenges/weather-observation-station-9/problem?isFullScreen=true) | [Solution](hackerrank/sql/basic_select/weather_observation_station_9.sql)
+            - [Weather observation station 10](https://www.hackerrank.com/challenges/weather-observation-station-10/problem?isFullScreen=true) | [Solution](hackerrank/sql/basic_select/weather_observation_station_10.sql)
+            - [Weather observation station 11](https://www.hackerrank.com/challenges/weather-observation-station-11?isFullScreen=true) | [Solution](hackerrank/sql/basic_select/weather_observation_station_11.sql)
+            - [Weather observation station 12](https://www.hackerrank.com/challenges/weather-observation-station-12/problem?isFullScreen=true) | [Solution](hackerrank/sql/basic_select/weather_observation_station_12.sql)
+            
+
+
 
 
 - Leetcode
diff --git a/hackerrank/sql/basic_select/japanese_cities_names.sql b/hackerrank/sql/basic_select/japanese_cities_names.sql
@@ -0,0 +1,3 @@
+SELECT NAME
+FROM CITY 
+WHERE COUNTRYCODE = 'JPN';
diff --git a/hackerrank/sql/basic_select/weather_observation_station_1.sql b/hackerrank/sql/basic_select/weather_observation_station_1.sql
@@ -0,0 +1,2 @@
+SELECT CITY, STATE
+FROM STATION;
diff --git a/hackerrank/sql/basic_select/weather_observation_station_10.sql b/hackerrank/sql/basic_select/weather_observation_station_10.sql
@@ -0,0 +1,3 @@
+SELECT DISTINCT(CITY)
+FROM STATION
+WHERE LOWER(RIGHT(CITY,1)) NOT IN ('a','e','i','o','u');
diff --git a/hackerrank/sql/basic_select/weather_observation_station_11.sql b/hackerrank/sql/basic_select/weather_observation_station_11.sql
@@ -0,0 +1,3 @@
+SELECT DISTINCT(CITY)
+FROM STATION
+WHERE LOWER(LEFT(CITY,1)) NOT IN ('a','e','i','o','u') OR LOWER(RIGHT(CITY,1)) NOT IN ('a','e','i','o','u');
diff --git a/hackerrank/sql/basic_select/weather_observation_station_12.sql b/hackerrank/sql/basic_select/weather_observation_station_12.sql
@@ -0,0 +1,3 @@
+SELECT DISTINCT(CITY)
+FROM STATION
+WHERE LOWER(LEFT(CITY,1)) NOT IN ('a','e','i','o','u') AND LOWER(RIGHT(CITY,1)) NOT IN ('a','e','i','o','u');
diff --git a/hackerrank/sql/basic_select/weather_observation_station_2.sql b/hackerrank/sql/basic_select/weather_observation_station_2.sql
diff --git a/hackerrank/sql/basic_select/weather_observation_station_3.sql b/hackerrank/sql/basic_select/weather_observation_station_3.sql
@@ -0,0 +1,3 @@
+SELECT DISTINCT(CITY)
+FROM STATION
+WHERE ID % 2 = 0;
diff --git a/hackerrank/sql/basic_select/weather_observation_station_4.sql b/hackerrank/sql/basic_select/weather_observation_station_4.sql
@@ -0,0 +1,2 @@
+SELECT COUNT(CITY) - COUNT(DISTINCT(CITY))
+FROM STATION;
diff --git a/hackerrank/sql/basic_select/weather_observation_station_5.sql b/hackerrank/sql/basic_select/weather_observation_station_5.sql
diff --git a/hackerrank/sql/basic_select/weather_observation_station_6.sql b/hackerrank/sql/basic_select/weather_observation_station_6.sql
@@ -0,0 +1,3 @@
+SELECT DISTINCT(CITY)
+FROM STATION
+WHERE LOWER(LEFT(CITY,1)) IN ('a','e','i','o','u'); 
diff --git a/hackerrank/sql/basic_select/weather_observation_station_7.sql b/hackerrank/sql/basic_select/weather_observation_station_7.sql
@@ -0,0 +1,3 @@
+SELECT DISTINCT(CITY)
+FROM STATION
+WHERE LOWER(RIGHT(CITY,1)) IN ('a','e','i','o','u');
diff --git a/hackerrank/sql/basic_select/weather_observation_station_8.sql b/hackerrank/sql/basic_select/weather_observation_station_8.sql
@@ -0,0 +1,4 @@
+SELECT DISTINCT(CITY)
+FROM STATION
+WHERE LOWER(LEFT(CITY,1)) IN ('a','e','i','o','u') 
+AND LOWER(RIGHT(CITY,1)) IN ('a','e','i','o','u');
diff --git a/hackerrank/sql/basic_select/weather_observation_station_9.sql b/hackerrank/sql/basic_select/weather_observation_station_9.sql
@@ -0,0 +1,3 @@
+SELECT DISTINCT(CITY)
+FROM STATION
+WHERE LOWER(LEFT(CITY,1)) NOT IN ('a','e','i','o','u');

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,3 @@`
	`1`	`+SELECT NAME`
	`2`	`+FROM CITY`
	`3`	`+WHERE COUNTRYCODE = 'JPN';`
Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,2 @@`
	`1`	`+SELECT CITY, STATE`
	`2`	`+FROM STATION;`
Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,3 @@`
	`1`	`+SELECT DISTINCT(CITY)`
	`2`	`+FROM STATION`
	`3`	`+WHERE LOWER(RIGHT(CITY,1)) NOT IN ('a','e','i','o','u');`
Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,2 @@`
	`1`	`+SELECT COUNT(CITY) - COUNT(DISTINCT(CITY))`
	`2`	`+FROM STATION;`