I have the database schema as follows:
Teams(teamID,teamName,home,leagueName)
Games(gameID,homeTeamID,guestTeamID,date)
How can I query(using SQL) all teamID
s where the team played against the team1 but not against the team2. 'team1 and team2 are some data values in the column teamName
?
Assuming that there is no game without HomeTeam
or GuestTeam
. Try this one,
SELECT a.gameID,
b.TeamName AS HomeTeam,
c.TeamName AS GuestTeam,
a.`date`
FROM GAMES a
INNER JOIN Teams b
ON a.homeTeamID = b.teamID
INNER JOIN Teams c
ON a.guestTeamID = c.teamID
WHERE (
b.TeamName = 'Team1' AND
c.teamName <> 'Team2'
)
OR
(
c.TeamName = 'Team1' AND
b.teamName <> 'Team2'
)
All teamIDs where the team played against the team1 but not against the team2
SELECT t1.teamName AS 'Home', t2.TeamName AS 'Guest', g.Date
FROM
(
SELECT *
FROM Games
WHERE (homeTeamID = 'Team 1' OR guestTeamID = 'Team 1')
AND (homeTeamID <> 'Team 2' OR guestTeamID <> 'Team 1')
) g ON t.teamID = hg.homeTeamID
INNER JOIN teams t1 ON g.homeTeamID = t1.teamId
INNER JOIN teams t2 ON g.guestTeamID = t2.teamId
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.