mysql: find rows with repeated values plus condition [duplicate] - mysql

Question

This question already has answers here:
Finding duplicate values in MySQL
(27 answers)
Closed 7 years ago.
I have a table "player" as follow
where:
ID is primary key.
date = date they play (just for 1 month, so could from 1 to 30)
Name = name of the players
Sport = sport they play and there can be many sports in the list; but i only focus on "football" one
This is the table
+----+------------+-------+-------------+
| ID | Date | Name | Sport |
+----+------------+-------+-------------+
| 1 | 1 | A | football |
| 2 | 1 | A | soccer |
| 3 | 3 | A | tennis |
| 4 | 2 | B | tennis |
| 5 | 2 | B | football |
| 6 | 1 | C | basketball |
| 7 | 1 | C | tennis |
| 8 | 1 | C | fishing |
+----+------------+-------+-------------+
I want to find all the people (name and sport) who play more than 2 sports in one day and one of the sport has to be "football".
So the result should be like this,
+----+------+------+----------+
| ID | Date | Name | Sport |
+----+------+------+----------+
| 1 | 1 | A | football |
| 2 | 1 | A | soccer |
| 4 | 2 | B | tenis |
| 5 | 2 | B | football |
+----+------+------+----------+
We don't count Name "C" since he does not play football (even he play more than 2 sport in one day).
I try
SELECT * FROM player GROUP BY Date, Name HAVING count(Date) > 1;
but wont give me what i want.
PS: this post is not a duplicate post. Those answers in Finding duplicate values in MySQL
wont directly target this question. this is finding the row with repeated values and condition. please remove the "duplicate" tag so others can benefit from this question.

Answer 1

You should be looking for this:
Table pl1 has matching player name and date who has played football, pl2 includes the count, pl3 gets you all those players who has played football and more games on a particular date and then you fetch the matching data from pl4
SELECT
pl4.*
FROM
player pl4
JOIN
(SELECT
pl2.name, pl2.date, COUNT(pl2.name) numberofgames
FROM
player pl2
JOIN (SELECT
date, name
FROM
player
WHERE
sport = 'football') pl1 ON (pl2.name = pl1.name
AND pl2.date = pl1.date)
GROUP BY pl2.name , pl2.date
HAVING numberofgames > 1) pl3 ON (pl3.name = pl4.name
AND pl3.date = pl4.date)

Answer 2

Try:
select
a.*
from tbl a
join (
select
date, name,
max(case when Sport = 'football' then 1 else 0 end) val
from tbl
group by date, name
having count(date) > 1
) b on a.date = b.date and a.name = b.name
where b.val = 1
Demo sqlfiddle