Create 197. Rising Temperature

Author: haibarawu

197. Rising Temperature

@@ -0,0 +1,28 @@
+/********************
+// 197. Rising Temperature
+// Given a Weather table, write a SQL query to find all dates' Ids with higher temperature compared to its previous (yesterday's) dates.
+
++---------+------------------+------------------+
+| Id(INT) | RecordDate(DATE) | Temperature(INT) |
++---------+------------------+------------------+
+|       1 |       2015-01-01 |               10 |
+|       2 |       2015-01-02 |               25 |
+|       3 |       2015-01-03 |               20 |
+|       4 |       2015-01-04 |               30 |
++---------+------------------+------------------+
+For example, return the following Ids for the above Weather table:
++----+
+| Id |
++----+
+|  2 |
+|  4 |
++----+
+********************/
+
+# Write your MySQL query statement below
+SELECT w2.Id
+FROM Weather AS w1
+INNER JOIN Weather AS w2
+    ON w1.Temperature < w2.Temperature
+    AND DATEDIFF(w2.RecordDate, w1.RecordDate) = 1
+