add batch
remove batch
split batch
comment selection
show hidden batches
hide batch
highlight batch
db<>fiddle
Db2
Firebird
MariaDB
MySQL
Node.js
Oracle
Postgres
SQLite
SQL Server
TimescaleDB
YugabyteDB
Developer-C 11.1
3.0
4.0
10.2
10.3
10.4
10.5
10.6
10.7
10.8
10.9
5.5
5.6
5.7
8.0
18
11g Release 2
18c
21c
23c
8.4
9.3
9.4
9.5
9.6
10
11
12
13
14
15
16
3.8
3.16
3.27
3.39
2012
2014
2016
2017
2017 (Linux)
2019
2019 (Linux)
2022
2.11
2.6
2.8
2.18
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
Sakila
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
AdventureWorks
no sample DB
no sample DB
AdventureWorks
no sample DB
no sample DB
no sample DB
no sample DB
run
markdown
donate
feedback
about
By using db<>fiddle, you agree to license everything you submit by
Creative Commons CC0
.
CREATE TABLE `game_match` ( `ID` INT(10) NOT NULL AUTO_INCREMENT COMMENT 'The unique ID of the match,', `ACCOUNT_ONE_ID` INT(10) NOT NULL COMMENT 'Foreign key for Player 1.', `ACCOUNT_TWO_ID` INT(10) NOT NULL COMMENT 'Foreign key for Player 2.', `WINNER_ID` INT(10) NOT NULL COMMENT 'Foreign key for which of the two players won.', INDEX(ACCOUNT_ONE_ID, ACCOUNT_TWO_ID, WINNER_ID) , PRIMARY KEY (`ID`) USING BTREE ); INSERT INTO game_match (ACCOUNT_ONE_ID, ACCOUNT_TWO_ID, WINNER_ID) VALUES (0, 1, 0), (1, 2, 2), (1, 2, 1), (0, 1, 0), (1, 0, 0), (2, 1, 2), (0, 2, 0), (0, 1, 1);
SELECT DISTINCT PlayerID, (SELECT COUNT(*) FROM game_match WHERE (ACCOUNT_ONE_ID = t1.PlayerID OR ACCOUNT_TWO_ID = t1.PlayerID) AND WINNER_ID = t1.PlayerID) MATCHES_WON, (SELECT COUNT(*) FROM game_match WHERE (ACCOUNT_ONE_ID = t1.PlayerID OR ACCOUNT_TWO_ID = t1.PlayerID) AND WINNER_ID <> t1.PlayerID) MATCHES_LOST FROM (SELECT DISTINCT ACCOUNT_ONE_ID AS PlayerID FROM game_match UNION SELECT DISTINCT ACCOUNT_TWO_ID FROM game_match) t1
PlayerID
MATCHES_WON
MATCHES_LOST
0
4
1
1
2
5
2
2
2