refactor 601

Author: fishercoder1534

database/_601.sql

@@ -1,37 +1,3 @@
--- 601. Human Traffic of Stadium
---
---X city built a new stadium, each day many people visit it and the stats are saved as these columns: id, date, people
---
---Please write a query to display the records which have 3 or more consecutive rows and the amount of people more than 100(inclusive).
---For example, the table stadium:
---
---+------+------------+-----------+
---| id   | date       | people    |
---+------+------------+-----------+
---| 1    | 2017-01-01 | 10        |
---| 2    | 2017-01-02 | 109       |
---| 3    | 2017-01-03 | 150       |
---| 4    | 2017-01-04 | 99        |
---| 5    | 2017-01-05 | 145       |
---| 6    | 2017-01-06 | 1455      |
---| 7    | 2017-01-07 | 199       |
---| 8    | 2017-01-08 | 188       |
---+------+------------+-----------+
---
---For the sample data above, the output is:
---
---+------+------------+-----------+
---| id   | date       | people    |
---+------+------------+-----------+
---| 5    | 2017-01-05 | 145       |
---| 6    | 2017-01-06 | 1455      |
---| 7    | 2017-01-07 | 199       |
---| 8    | 2017-01-08 | 188       |
---+------+------------+-----------+
---
---Note:
---Each day only have one row record, and the dates are increasing with id increasing.
-
 SELECT s1.* FROM stadium AS s1, stadium AS s2, stadium as s3
     WHERE
     ((s1.id + 1 = s2.id