在一个查询中使用 UNION 的两个 INSERT 语句

Question

当我运行没有 UNION 和一个 SELECT 的代码时，它可以工作，但是当我尝试运行一起时，它不会将数据插入 table，或者在没有 UNION 的情况下以不同的方式尝试，这里有一些帮助。

<?php
include("conf.php");
$query = "INSERT INTO fund(Team, GamesPlayedHome, GoalsScorredHome, GoalsAcceptedHome, RedCardGotHome, AvarageGoalsScorredHome, AvarageGoalsAcceptedHome, GamesPlayedAway, GoalsScorredAway, GoalsAcceptedAway, RedCardGotAway, AvarageGoalsScorredAway, AvarageGoalsAcceptedAway)
SELECT HomeTeam As Team, COUNT(HomeTeam) AS GamesPlayedHome, SUM(HomeGoals) AS GoalsScorredHome, SUM(AwayGoals) AS GoalsAcceptedHome, SUM(HomeRedCards) AS RedCardGotHome, 
SUM(HomeGoals) / COUNT(HomeTeam) AS AvarageGoalsScorredHome, SUM(AwayGoals) / COUNT(HomeTeam) AS AvarageGoalsAcceptedHome
FROM GetHistoricMatchesByLeagueAndDateInterval GROUP BY HomeTeam ORDER BY HomeTeam ASC
UNION ALL
SELECT COUNT(AwayTeam) AS GamesPlayedAway, SUM(AwayGoals) AS GoalsScorredAway, SUM(HomeGoals) AS GoalsAcceptedAway, SUM(AwayRedCards) AS RedCardGotAway, 
SUM(HomeGoals) / COUNT(AwayTeam) AS AvarageGoalsScorredAway, SUM(AwayGoals) / COUNT(AwayTeam) AS AvarageGoalsAcceptedAway
FROM GetHistoricMatchesByLeagueAndDateInterval GROUP BY AwayTeam ORDER BY AwayTeam ASC";
$data= mysqli_query($conn,$query) or die(mysqli_error());
while($row = mysqli_fetch_assoc($data)){
    foreach($row as $cname => $cvalue){
        print "$cname: $cvalue\t";
    }
    print "\r\n";
}
?>

Answer 1

使用 UNION ALL 时，两个 SELECT 查询中的列必须相同。在您给定的查询中，列列表不匹配。

INSERT 块中有 13 列，但第一个 SELECT 包含 7 列，第二个 SELECT 包含 6 列。

因此您可以为剩余的列添加 NULL 或零（对于非空列）。

希望您需要以下查询：

INSERT INTO test 
(Team, GamesPlayedHome, GoalsScorredHome, GoalsAcceptedHome, RedCardGotHome, AvarageGoalsScorredHome, AvarageGoalsAcceptedHome, 
 GamesPlayedAway, GoalsScorredAway, GoalsAcceptedAway, RedCardGotAway, AvarageGoalsScorredAway, AvarageGoalsAcceptedAway)
SELECT HomeTeam As Team, COUNT(HomeTeam) AS GamesPlayedHome, SUM(HomeGoals) AS GoalsScorredHome, SUM(AwayGoals) AS GoalsAcceptedHome, SUM(HomeRedCards) AS RedCardGotHome, 
SUM(HomeGoals) / COUNT(HomeTeam) AS AvarageGoalsScorredHome, SUM(AwayGoals) / COUNT(HomeTeam) AS AvarageGoalsAcceptedHome
, NULL, NULL, NULL, NULL, NULL, NULL
FROM GetHistoricMatchesByLeagueAndDateInterval GROUP BY HomeTeam ORDER BY HomeTeam ASC)
UNION ALL
SELECT NULL, NULL, NULL, NULL, NULL, NULL, NULL,
COUNT(AwayTeam) AS GamesPlayedAway, SUM(AwayGoals) AS GoalsScorredAway, SUM(HomeGoals) AS GoalsAcceptedAway, SUM(AwayRedCards) AS RedCardGotAway, 
SUM(HomeGoals) / COUNT(AwayTeam) AS AvarageGoalsScorredAway, SUM(AwayGoals) / COUNT(AwayTeam) AS AvarageGoalsAcceptedAway
FROM GetHistoricMatchesByLeagueAndDateInterval GROUP BY AwayTeam ORDER BY AwayTeam ASC

Answer 2

尝试这样的事情：

INSERT INTO account(employees)
SELECT * FROM (
SELECT employees FROM account WHERE id = 1
UNION
SELECT employees FROM account WHERE id = 2
) AS a

将联合结果包装在另一个 table。

所以您的查询是：

    <?php
    include("conf.php");
    $query = "INSERT INTO fund(Team, GamesPlayedHome, GoalsScorredHome, GoalsAcceptedHome, RedCardGotHome, AvarageGoalsScorredHome, AvarageGoalsAcceptedHome, GamesPlayedAway, GoalsScorredAway, GoalsAcceptedAway, RedCardGotAway, AvarageGoalsScorredAway, AvarageGoalsAcceptedAway)
    seelct * from (SELECT HomeTeam As Team, COUNT(HomeTeam) AS GamesPlayedHome, SUM(HomeGoals) AS GoalsScorredHome, SUM(AwayGoals) AS GoalsAcceptedHome, SUM(HomeRedCards) AS RedCardGotHome, 
    SUM(HomeGoals) / COUNT(HomeTeam) AS AvarageGoalsScorredHome, SUM(AwayGoals) / COUNT(HomeTeam) AS AvarageGoalsAcceptedHome
    FROM GetHistoricMatchesByLeagueAndDateInterval GROUP BY HomeTeam ORDER BY HomeTeam ASC
    UNION ALL
    SELECT COUNT(AwayTeam) AS GamesPlayedAway, SUM(AwayGoals) AS GoalsScorredAway, SUM(HomeGoals) AS GoalsAcceptedAway, SUM(AwayRedCards) AS RedCardGotAway, 
    SUM(HomeGoals) / COUNT(AwayTeam) AS AvarageGoalsScorredAway, SUM(AwayGoals) / COUNT(AwayTeam) AS AvarageGoalsAcceptedAway
    FROM GetHistoricMatchesByLeagueAndDateInterval GROUP BY AwayTeam ORDER BY AwayTeam ASC) as temp";
    $data= mysqli_query($conn,$query) or die(mysqli_error());
    while($row = mysqli_fetch_assoc($data)){
        foreach($row as $cname => $cvalue){
            print "$cname: $cvalue\t";
        }
        print "\r\n";
    }
    ?>

在一个查询中使用 UNION 的两个 INSERT 语句

Two INSERT statements with UNION in one query

php

mysql

sql

union

mysqli