Question

我有一个使用多个UNION ALL的查询。我收到语法错误而无法找到它。我认为这与使用多个工会有关。我只使用MySQL。任何帮助表示赞赏。

错误1064（42000）：您的SQL语法有错误;查看与您的MySQL服务器版本对应的手册，以便在＆＃39; ALL附近使用正确的语法（选择a。＆＃39;在第41行

 SELECT   Sum(counter)                           AS counter,
         DATE_FORMAT(dtime,'%Y-%m-%d 00:00:00') AS dtime
FROM     (
                SELECT counter,
                       dtime
                FROM   MinutesVisible
                WHERE  dtime >= '2015:3:1 00:00:00'
                AND    dtime <= '2015:3:16  23:59:59'
                AND    dtime < NOW()
                AND    id='980371'
                AND    counter != 0
                UNION ALL 
                          (
                                 SELECT a.counter,
                                        a.dtime
                                 FROM   MinutesVisible a,
                                        calendar b
                                 WHERE  a.dtime = b.dtime
                                 AND    b.dtime >= '2015:3:1 00:00:00'
                                 AND    b.dtime <= '2015:3:16  23:59:59'
                                 AND    b.dtime < NOW()
                                 AND    id='979661')
                   UNION
                            (
                                   SELECT '0'  AS counter,
                                          b.dtime
                                   FROM   calendar b
                                   WHERE  dtime >= '2015:3:1  00:00:00'
                                   AND    dtime <= '2015:3:16  23:59:59'
                                   AND    dtime < NOW()
                                   AND    dtime NOT IN
                                          (
                                                 SELECT dtime
                                                 FROM   MinutesVisible
                                                 WHERE  dtime >= '2015:3:1 00:00:00'
                                                 AND    dtime <= '2015:3:16 23:59:59'
                                                 AND    dtime < NOW()
                                                 AND    id='979661' ))
                   ORDER BY dtime
                   AND      counter != 0
                   UNION ALL (this is line 41)
                             (
                                    SELECT a.counter,
                                           a.dtime
                                    FROM   MinutesVisible a,
                                           calendar b
                                    WHERE  a.dtime = b.dtime
                                    AND    b.dtime >= '2015:3:1 00:00:00'
                                    AND    b.dtime <= '2015:3:16  23:59:59'
                                    AND    b.dtime < NOW()
                                    AND    id='984121')
                      UNION
                               (
                                      SELECT '0' AS counter,
                                             b.dtime
                                      FROM   calendar b
                                      WHERE  dtime >= '2015:3:1  00:00:00'
                                      AND    dtime <= '2015:3:16  23:59:59'
                                      AND    dtime < NOW()
                                      AND    dtime NOT IN
                                             (
                                                    SELECT dtime
                                                    FROM   MinutesVisible where dtime >= '2015:3:1 00:00:00'
                                                    AND    dtime <= '2015:3:16 23:59:59'
                                                    AND    dtime < NOW()
                                                    AND    id='984121' ))
                      ORDER BY dtime
                      AND      counter != 0) AS MainTable
GROUP BY WEEKOFYEAR(dtime)
HAVING   SUM(counter) > 0

如果我更改了＆＃39; id =＆＃39; id并在其中包含另一个id号并删除第二个union所有它的工作原理。我很确定它与第二个联盟有关。这个语句是动态构建的，所以我不能轻易改为使用in而不是多个union alls。

如果我没有清楚地解释这一点，请告诉我，我会提供更多详细信息。

Answer 1

检查你所写行之上的陈述（这是第41行）尝试删除/更新此语句并执行查询。

ORDER BY
            dtime
        AND counter != 0

我们不能在UNION＆amp;和UNION ALL。在所有UNION / UNION ALL语句

之后，排序依据应该是最后一个

UNION ALL中的MySQL语法错误

1 个答案: