Question

在我的数据库中，我有5个包含详细信息的表格，为了从每个表格中提取详细信息，我需要再加入3个表格。
我还需要（在结果查询表中）获取一些数据（每个IdLite总是相同的数据）并将它们添加到每一行。
我写了一个有效的查询，但它非常慢，所以我不能使用它我曾两次使用CONCAT：
第一次从每个细节表中获取详细信息;
第二次从其他表中获取数据（这些数据总是相同的）。此外，CONCAT之前的数据始终相同（对于每个IdLite）如何改进查询？我在考虑使用变量，但我无法做到。

(
SELECT
    t.Office,
    li.Year,
    li.RIFNUM,
    1 IdTable,
    li.IdLite,
    IdLiteUser,
    d1.IdEvent, 
    CONCAT_WS('_',
        IFNULL(d1.TypeT,''), 
        IFNULL(d1.In_Date,''), 
        IFNULL(d1.Out_Date,'')
        ) AS Dett,
    CONCAT_WS('_', 
        IFNULL(li.Section,''), 
        IFNULL(li.InDate,''), 
        IFNULL(li.Type,''), 
        IFNULL(li.Subject,''), 
        IFNULL(li.DCU_Instance,''), 
        IFNULL(li.DC_Instance,'')
        ) AS Essential 
FROM TRDetails1 d1 
INNER JOIN TRUserLite lU USING (IdLite) 
INNER JOIN TRLite li USING (IdLite) 
INNER JOIN TR t USING(IdOffice) 
WHERE lU.IdUser= '@myVarInsertedEachTime' 
AND lU.Status = 0 
AND d1.IdEvent NOT IN (
    SELECT IdEvent 
    FROM TRInfo 
    WHERE IdUser= '@myVarInsertedEachTime' 
    AND IdTable = 1 
    AND IdEvent = d1.IdEvent 
    AND Date > d1.Changed)
)
UNION 
( 
SELECT 
    t.Office, 
    li.Year, 
    li.RifNum, 
    2 IdTable, 
    li.IdLite, 
    IdLiteUser, 
    d2.IdEvent, 
    CONCAT_WS('_', 
        IFNULL(DocType,''), 
        IFNULL(d2.Number,''), 
        IFNULL(d2.Side,''), 
        IFNULL(d2.InDate,'')
        ) AS Dett, 
    CONCAT_WS('_', 
        IFNULL(li.Section,''), 
        IFNULL(li.InDate,''), 
        IFNULL(li.Type,''), 
        IFNULL(li.Subject,''), 
        IFNULL(li.DCU_Instance,''), 
        IFNULL(li.DC_Instance,'')
        ) AS Essential 
FROM TRDetails2 d2 
INNER JOIN TRUserLite lU USING (IdLite) 
INNER JOIN TRLite li USING (IdLite) 
INNER JOIN TR t USING(IdOffice) 
WHERE lU.IdUser= '@myVarInsertedEachTime' 
AND lU.Status = 0 
AND d2.IdEvent NOT IN (
    SELECT IdEvent 
    FROM TRInfo 
    WHERE IdUser= lU.IdUser
    AND IdTable= 2) 
)
UNION 
( 
SELECT 
    t.Office, 
    li.Year, 
    li.RifNum, 
    3 IdTable, 
    li.IdLite, 
    IdLiteUser, 
    d3.IdEvent, 
    CONCAT_WS('_', 
        IFNULL(d3.UdiDate,''), 
        IFNULL(d3.UdiType,''), 
        IFNULL(d3.UdiResult,''), 
        IFNULL(d3.Supervisor,''), 
        IFNULL(d3.GroupIn,''), 
        IFNULL(d3.ROrder,'')
        ) AS Dett, 
    CONCAT_WS('_', 
        IFNULL(li.Section,''), 
        IFNULL(li.InDate,''), 
        IFNULL(li.Type,''), 
        IFNULL(li.Subject,''), 
        IFNULL(li.DCU_Instance,''), 
        IFNULL(li.DC_Instance,'')
        ) AS Essential 
FROM TRDetails3 d3 
INNER JOIN TRUserLite lU USING (IdLite) 
INNER JOIN TRLite li USING (IdLite) 
INNER JOIN TR t USING(IdOffice) 
WHERE lU.IdUser= '@myVarInsertedEachTime' 
AND lU.Status = 0 
AND d3.IdEvent NOT IN (
    SELECT IdEvent
    FROM TRInfo
    WHERE IdUser= lU.IdUser
    AND IdTable= 3) 
)
UNION 
( 
SELECT 
    t.Office, 
    li.Year, 
    li.RifNum, 
    4 IdTable, 
    li.IdLite, 
    IdLiteUser, 
    d4.IdEvent, 
    CONCAT_WS('_', 
        IFNULL(d4.Type,''), 
        IFNULL(d4.Number,''), 
        IFNULL(d4.Supervisor,''), 
        IFNULL(d4.PubDate,''), 
        IFNULL(d4.UdiDate,''), 
        IFNULL(d4.UdiType,''), 
        IFNULL(d4.Result,'')
        ) AS Dett, 
    CONCAT_WS('_', 
        IFNULL(li.Section,''), 
        IFNULL(li.InDate,''), 
        IFNULL(li.Type,''), 
        IFNULL(li.Subject,''), 
        IFNULL(li.DCU_Instance,''), 
        IFNULL(li.DC_Instance,'')
        ) AS Essential 
FROM TRDetails4 d4 
INNER JOIN TRUserLite lU USING (IdLite) 
INNER JOIN TRLite li USING (IdLite) 
INNER JOIN TR t USING(IdOffice) 
WHERE lU.IdUser= '@myVarInsertedEachTime' 
AND lU.Status = 0 
AND d4.IdEvent NOT IN (
    SELECT IdEvent
    FROM TRInfo
    WHERE IdUser= lU.IdUser
    AND IdTable= 4) 
)
UNION 
( 
SELECT 
    t.Office, 
    li.Year, 
    li.RifNum, 
    5 IdTable, 
    li.IdLite, 
    IdLiteUser, 
    d5.IdEvent, 
    CONCAT_WS('_', 
        IFNULL(d5.Type,''), 
        IFNULL(d5.Number,''), 
        IFNULL(d5.Supervisor,''), 
        IFNULL(d5.PubDate,''), 
        IFNULL(d5.Result,'')
        ) AS Dett, 
    CONCAT_WS('_', 
        IFNULL(li.Section,''), 
        IFNULL(li.InDate,''), 
        IFNULL(li.Type,''), 
        IFNULL(li.Subject,''), 
        IFNULL(li.DCU_Instance,''), 
        IFNULL(li.DC_Instance,'')
        ) AS Essential 
FROM TRDetails5 d5 
INNER JOIN TRUserLite lU USING (IdLite) 
INNER JOIN TRLite li USING (IdLite) 
INNER JOIN TR t USING(IdOffice) 
WHERE lU.Idutente = '@myVarInsertedEachTime' 
AND lU.Status = 0 
AND d5.IdEvent NOT IN (
    SELECT IdEvent 
    FROM TRInfo
    WHERE IdUser= lU.Idutente 
    AND IdTable= 5)
)
ORDER BY Office, Year, RifNum, IdTable

编辑：
我的DB的结构是：
IdLite是基本数据的ID 每个IdLite有一个Office，一个Year，一个RifNum，一个TR。
每个IdLite在5个详细信息表中都有许多记录（TRDetails1，TRDetails2，TRDetails3，TRDetails4，TRDetails5）。

每个User都有许多IdLite（由TRUserLite中的ref存储）并且需要知道每个event（存储在每个5个表中）IdLite 1}}。

当User知道详细信息时，它（rif）会存储到TRInfo

我需要检索每个IdLite（链接到特定User）并且他不了解的事件（来自所有5个表）。

EDIT2：
这些是我的表结构：

CREATE TABLE IF NOT EXISTS `TRDetails1` (
  `IdEvent` bigint(20) NOT NULL AUTO_INCREMENT PRIMARY KEY ,
  `IdLite` bigint(20) NOT NULL,
  `TypeT` varchar(50) DEFAULT NULL,
  `In_Date` date DEFAULT NULL,
  `Out_Date` date DEFAULT NULL,
  `Changed` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
) ENGINE=InnoDB;

CREATE TABLE IF NOT EXISTS `TRDetails2` (
  `IdEvent` bigint(20) NOT NULL AUTO_INCREMENT PRIMARY KEY,
  `IdLite` bigint(20) NOT NULL,
  `DocType` varchar(200) DEFAULT NULL,
  `Number` int(10) DEFAULT NULL,
  `Side` varchar(50) DEFAULT NULL,
  `InDate` date DEFAULT NULL,
  `Updated` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP
) ENGINE=InnoDB;

CREATE TABLE IF NOT EXISTS `TRDetails3` (
  `IdEvent` bigint(20) NOT NULL AUTO_INCREMENT PRIMARY KEY,
  `IdLite` bigint(20) NOT NULL,
  `UdiDate` date DEFAULT NULL,
  `UdiType` varchar(50) DEFAULT NULL,
  `UdiResult` varchar(200) DEFAULT NULL,
  `Supervisor` varchar(50) DEFAULT NULL,
  `GroupIn` varchar(50) DEFAULT NULL,
  `ROrder` int(5) DEFAULT NULL,
  `Updated` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP
) ENGINE=InnoDB;

CREATE TABLE IF NOT EXISTS `TRDetails4` (
  `IdEvent` bigint(20) NOT NULL AUTO_INCREMENT PRIMARY KEY,
  `IdLite` bigint(20) NOT NULL,
  `TypeT` varchar(50) DEFAULT NULL,
  `Number` int(10) DEFAULT NULL,
  `Supervisor` varchar(50) DEFAULT NULL,
  `PubDate` date DEFAULT NULL,
  `UdiDate` date DEFAULT NULL,
  `UdiType` varchar(50) DEFAULT NULL,
  `Result` varchar(50) DEFAULT NULL,
  `Updated` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP
) ENGINE=InnoDB;

CREATE TABLE IF NOT EXISTS `TRDetails5` (
  `IdEvent` bigint(20) NOT NULL AUTO_INCREMENT PRIMARY KEY,
  `IdLite` bigint(20) NOT NULL,
  `TypeT` varchar(50) DEFAULT NULL,
  `Number` int(10) DEFAULT NULL,
  `Supervisor` varchar(50) DEFAULT NULL,
  `PubDate` date DEFAULT NULL,
  `Result` varchar(50) DEFAULT NULL,
  `Updated` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP
) ENGINE=InnoDB;

CREATE TABLE IF NOT EXISTS `TRLite` (
  `IdLite` bigint(20) NOT NULL AUTO_INCREMENT PRIMARY KEY,
  `Region` char(30) NOT NULL,
  `IdOffice` smallint(4) NOT NULL,
  `RIFNUM` int(11) NOT NULL,
  `Year` mediumint(4) NOT NULL,
  `Sub` tinyint(2) DEFAULT NULL,
  `Section` tinyint(2) NOT NULL,
  `InDate` date NOT NULL,
  `Type` varchar(50) NOT NULL,
  `Subject` varchar(200) NOT NULL,
  `DCU_Instance` char(1) DEFAULT NULL,
  `DC_Instance` char(1) DEFAULT NULL,
  `Defined` tinyint(2) DEFAULT NULL,
  `DefinedDate` date DEFAULT NULL,
  `Updated` timestamp NULL DEFAULT CURRENT_TIMESTAMP,
  `Scroll_Table` set

('00001','00010','00011','00100','00101','00110','00111','01000','01001','01010','01011','01100','01101

','01110','01111','10000','10001','10010','10011','10100','10101','10110','10111','11000','11001','1101

0','11011','11100','11101','11110','11111') DEFAULT NULL
) ENGINE=InnoDB;

CREATE TABLE IF NOT EXISTS `TRUserLite` (
  `IdUser` bigint(20) NOT NULL,
  `IdLite` bigint(20) NOT NULL,
  `IdLiteUser` varchar(150) DEFAULT NULL,
  `Status` tinyint(5) NOT NULL DEFAULT '0',
  PRIMARY KEY (`IdUser`,`IdLite`),
  KEY `IdLite` (`IdLite`)
) ENGINE=InnoDB;

CREATE TABLE IF NOT EXISTS `TR` (
  `IdOffice` smallint(4) NOT NULL PRIMARY KEY,
  `IdRegion` tinyint(2) NOT NULL,
  `Office` char(200) NOT NULL,
  `IdWebOffice` varchar(30) NOT NULL
) ENGINE=InnoDB;

CREATE TABLE IF NOT EXISTS `TRInfo` (
  `IdInfo` bigint(20) NOT NULL AUTO_INCREMENT PRIMARY KEY,
  `IdUser` bigint(20) NOT NULL,
  `IdLite` bigint(20) NOT NULL,
  `IdTable` tinyint(1) NOT NULL,
  `IdEvent` bigint(20) NOT NULL,
  `InfoDate` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP
) ENGINE=InnoDB;

CREATE TABLE IF NOT EXISTS `Users` (
  `IdUser` bigint(20) NOT NULL AUTO_INCREMENT PRIMARY KEY,
  `User` varchar(50) NOT NULL,
  `Status` tinyint(5) NOT NULL DEFAULT '0'
) ENGINE=InnoDB;

ALTER TABLE `TRUserLite`
ADD CONSTRAINT `TRUserLite_ibfk_1` FOREIGN KEY (`IdUser`) REFERENCES `Users` (`IdUser`),
ADD CONSTRAINT `TRUserLite_ibfk_2` FOREIGN KEY (`IdLite`) REFERENCES `TRLite` (`IdLite`);

编辑3 :(数据库插入数据标准）
每个IdLite可以有许多细节（在5个细节表中的一个或多个上）当发生某些事情时，我会在一个（或多个）详细信息表中插入一条新记录之后，每个用户都需要知道（仅）新的细节为此，我将已知详细信息保存到TRInfo中，并且仅向每个用户提供新的详细信息（指向与用户链接的IdLite）。所以我需要提取所有未知的细节。

编辑4 :(如何修改数据库插入标准）
如果我理解你的提示，你建议在知道详细信息之前插入TRInfo，并添加一个字段来检查相对用户是否已知道它。所以我将所有细节都包含在TRInfo中，我将切断已知的。这是你告诉我这样做的方式吗？

Answer 1

哇......我真的不得不抓住这个问题，我明白为什么没有其他人试图帮助你。可能比简单的查询/聚合更令人困惑。无论如何，让我看看我是否理解这些表的流程是什么。条目将添加到任何一个详细信息表1-5中。这些分配给某些用户。基于手头的任务，最终是什么时候完成后，将一条记录插入TRInfo，从而关闭事件。因此，您将使用每个详细信息表启动，然后将WHERE NOT IN查询应用于TRINFO表

现在，那就是说，您正在寻找与给定用户相关的交易。从这里，我们可以直接使用TRUserLite表开始。

从TRUserLite表中，我们可以加入IdLite ID上的相应Details表1-5，同时保留详细信息表中的IdEvent及其对应的1-5值。最后，我们可以对TRInfo表执行LEFT-JOIN，以获得相同的用户，事件和表ID＃。通过左连接，它比NOT IN子选择更快。我们通过在WHERE子句中包含

来消除那些已经“完成”的记录

     AND TRInfo.IdEvent IS NULL

现在，以上所述，如果准确，以下查询应该帮助你。它可能有一些您可能能够解决的小问题（别名，字段等）。

现在我将解释一下这个问题。为了简化原始查询的所有额外连接，我开始使用TRUserLite并获取符合条件的条目，而无需额外连接到TRLite和TR表。我只是加入/ UNIONing他们的细节和TRInfo来获得那些合格的记录。在加入Details表时，我将各个连接字段作为常用的“Dett”结果列。完成所有合格记录后，只有我连接回TRLite和TR才能获取最终查询的附加数据。这使得内部查询更加紧密，有限的细节，然后拉其余部分。

Recommended indexes
table          index
TRUserLite     ( IdUser, Status )     to optimize the WHERE clause.
TRInfo         ( IdUser, IdLite, IdEvent, IdTable )

SELECT 
      TR.Office,
      TRL.`Year`,
      TRL.RIFNum,
      All5.IdTable
      All5.IdLite,
      All5.IdLiteUser,
      All5.IdEvent,
      All5.IdUser,
      All5.Dett,
      U.User,
      U.Status as UserStatus,
      CONCAT_WS('_', 
         IFNULL( TRL.Section,''), 
         IFNULL( TRL.InDate,''), 
         IFNULL( TRL.Type,''), 
         IFNULL( TRL.Subject,''), 
         IFNULL( TRL.DCU_Instance,''), 
         IFNULL( TRL.DC_Instance,'') ) AS Essential
   from 
      ( SELECT 
              TRUL.IDUser,
              TRUL.IdLite,
              TRUL.IdLiteUser,
              1 as IdTable,
              TD1.IdEvent,
              CONCAT_WS('_',
                 IFNULL( TD1.TypeT,''), 
                 IFNULL( TD1.In_Date,''), 
                 IFNULL( TD1.Out_Date,'') ) AS Dett
           from
              TRUserLite TRUL
                 JOIN TRDetails1 TD1
                    ON TRUL.IdLite = TD1.IdLite
                    LEFT JOIN TRInfo
                       ON TRUL.IdUser = TRInfo.IdUser
                       AND TRUL.IdLite = TRInfo.IdLite
                       AND TD1.IdEvent = TRInfo.IdEvent
                       AND TRInfo.IdTable = 1
           where 
                 TRUL.IdUser = '@myVarInsertedEachTime'
             AND TRUL.Status = 0
             AND TRInfo.IdEvent IS NULL

        UNION ALL
        SELECT 
              TRUL.IDUser,
              TRUL.IdLite,
              TRUL.IdLiteUser,
              2 as IdTable,
              TD2.IdEvent,
              CONCAT_WS( '_', 
                 IFNULL( TD2.DocType,''), 
                 IFNULL( TD2.Number,''), 
                 IFNULL( TD2.Side,''), 
                 IFNULL( TD2.InDate,'') ) AS Dett
           from
              TRUserLite TRUL
                 JOIN TRDetails2 TD2
                    ON TRUL.IdLite = TD2.IdLite
                    LEFT JOIN TRInfo
                       ON TRUL.IdUser = TRInfo.IdUser
                       AND TRUL.IdLite = TRInfo.IdLite
                       AND TD2.IdEvent = TRInfo.IdEvent
                       AND TRInfo.IdTable = 2
           where 
                 TRUL.IdUser = '@myVarInsertedEachTime'
             AND TRUL.Status = 0
             AND TRInfo.IdEvent IS NULL

        UNION ALL
        SELECT 
              TRUL.IDUser,
              TRUL.IdLite,
              TRUL.IdLiteUser,
              3 as IdTable,
              TD3.IdEvent,
              CONCAT_WS('_', 
                 IFNULL( TD3.UdiDate,''), 
                 IFNULL( TD3.UdiType,''), 
                 IFNULL( TD3.UdiResult,''), 
                 IFNULL( TD3.Supervisor,''), 
                 IFNULL( TD3.GroupIn,''), 
                 IFNULL( TD3.ROrder,'') ) AS Dett
           from
              TRUserLite TRUL
                 JOIN TRDetails3 TD3
                    ON TRUL.IdLite = TD3.IdLite
                    LEFT JOIN TRInfo
                       ON TRUL.IdUser = TRInfo.IdUser
                       AND TRUL.IdLite = TRInfo.IdLite
                       AND TD3.IdEvent = TRInfo.IdEvent
                       AND TRInfo.IdTable = 3
           where 
                 TRUL.IdUser = '@myVarInsertedEachTime'
             AND TRUL.Status = 0
             AND TRInfo.IdEvent IS NULL

        UNION ALL
        SELECT 
              TRUL.IDUser,
              TRUL.IdLite,
              TRUL.IdLiteUser,
              4 as IdTable,
              TD4.IdEvent,
              CONCAT_WS('_', 
                 IFNULL( TD4.Type,''), 
                 IFNULL( TD4.Number,''), 
                 IFNULL( TD4.Supervisor,''), 
                 IFNULL( TD4.PubDate,''), 
                 IFNULL( TD4.UdiDate,''), 
                 IFNULL( TD4.UdiType,''), 
                 IFNULL( TD4.Result,'') ) AS Dett 
           from
              TRUserLite TRUL
                 JOIN TRDetails4 TD4
                    ON TRUL.IdLite = TD4.IdLite
                    LEFT JOIN TRInfo
                       ON TRUL.IdUser = TRInfo.IdUser
                       AND TRUL.IdLite = TRInfo.IdLite
                       AND TD4.IdEvent = TRInfo.IdEvent
                       AND TRInfo.IdTable = 4
           where 
                 TRUL.IdUser = '@myVarInsertedEachTime'
             AND TRUL.Status = 0
             AND TRInfo.IdEvent IS NULL

        UNION ALL
        SELECT 
              TRUL.IDUser,
              TRUL.IdLite,
              TRUL.IdLiteUser,
              5 as IdTable,
              TD5.IdEvent,
              CONCAT_WS('_', 
                 IFNULL( TD5.Type,''), 
                 IFNULL( TD5.Number,''), 
                 IFNULL( TD5.Supervisor,''), 
                 IFNULL( TD5.PubDate,''), 
                 IFNULL( TD5.Result,'') ) AS Dett
           from
              TRUserLite TRUL
                 JOIN TRDetails5 TD5
                    ON TRUL.IdLite = TD5.IdLite
                    LEFT JOIN TRInfo
                       ON TRUL.IdUser = TRInfo.IdUser
                       AND TRUL.IdLite = TRInfo.IdLite
                       AND TD5.IdEvent = TRInfo.IdEvent
                       AND TRInfo.IdTable = 5
           where 
                 TRUL.IdUser = '@myVarInsertedEachTime'
             AND TRUL.Status = 0
             AND TRInfo.IdEvent IS NULL ) All5

         JOIN Users U
            ON All5.IdUser = U.IdUser

         JOIN TRLite TRL
            ON All5.IdLite = TRL.IdLite
            JOIN TR
               ON TRL.IdOffice = TR.IdOffice
   ORDER BY
      TR.Office,
      TRL.`Year`,
      TRL.RIFNum,
      All5.IdTable

（顺便说一下，我将用户表添加到联接中，以防你想要那些列......可以轻松删除）

了解原始查询对此结果的执行时间会很有趣，即使它无法解析您的查询时间。

<强>反馈

您目前正在寻找不在TRInfo表中的内容。如果您可以重新构造它，以便向TRInfo添加状态列，例如“IsRecordOpen”（夸大列名称）并将其设置为1，并在此时插入TRDetails表。然后，当它完成时，将标志设置为零（不再是打开的任务）。因此，这是待完成工作的每个项目的基础，它通过事件ID指向相应的详细信息表。然后，您的查询将简化为类似..

select
         TR.Office,
          TRL.`Year`,
          TRL.RIFNum,
          TRI.IdTable
          TRI.IdLite,
          TRUL.IdLiteUser,
          TRI.IdEvent,
          TRI.IdUser,
          case when TRI.IdTable = 1 THEN
                  CONCAT_WS('_',
                     IFNULL( TD1.TypeT,''), 
                     IFNULL( TD1.In_Date,''), 
                     IFNULL( TD1.Out_Date,'') )

               when TRI.IdTable = 2 THEN
                  CONCAT_WS( '_', 
                     IFNULL( TD2.DocType,''), 
                     IFNULL( TD2.Number,''), 
                     IFNULL( TD2.Side,''), 
                     IFNULL( TD2.InDate,'') ) 

               when TRI.IdTable = 3 THEN
                  CONCAT_WS('_', 
                     IFNULL( TD3.UdiDate,''), 
                     IFNULL( TD3.UdiType,''), 
                     IFNULL( TD3.UdiResult,''), 
                     IFNULL( TD3.Supervisor,''), 
                     IFNULL( TD3.GroupIn,''), 
                     IFNULL( TD3.ROrder,'') ) 

               when TRI.IdTable = 4 THEN
                  CONCAT_WS('_', 
                     IFNULL( TD4.Type,''), 
                     IFNULL( TD4.Number,''), 
                     IFNULL( TD4.Supervisor,''), 
                     IFNULL( TD4.PubDate,''), 
                     IFNULL( TD4.UdiDate,''), 
                     IFNULL( TD4.UdiType,''), 
                     IFNULL( TD4.Result,'') )

               when TRI.IdTable = 5 THEN
                  CONCAT_WS('_', 
                     IFNULL( TD5.Type,''), 
                     IFNULL( TD5.Number,''), 
                     IFNULL( TD5.Supervisor,''), 
                     IFNULL( TD5.PubDate,''), 
                     IFNULL( TD5.Result,'') ) 

               END AS Dett,

          CONCAT_WS('_', 
             IFNULL( TRL.Section,''), 
             IFNULL( TRL.InDate,''), 
             IFNULL( TRL.Type,''), 
             IFNULL( TRL.Subject,''), 
             IFNULL( TRL.DCU_Instance,''), 
             IFNULL( TRL.DC_Instance,'') ) AS Essential
   from
      TRInfo TRI
         JOIN TRLite TRL
            on TRI.IdLite = TRL.IdLite
            JOIN TR
               on TRL.IdOffice = TR.IdOffice

         JOIN TRUserLite TRUL
            on TRI.IdUser = TRUL.IdUser
           AND TRI.IdLite = TRUL.IdLite
           AND TRUL.Status = 0

         LEFT JOIN TRDetails1 TD1
            ON TRI.TableID = 1
           AND TRI.IdEvent = TD1.IdEvent
         LEFT JOIN TRDetails2 TD2
            ON TRI.TableID = 2
           AND TRI.IdEvent = TD2.IdEvent
         LEFT JOIN TRDetails1 TD3
            ON TRI.TableID = 3
           AND TRI.IdEvent = TD3.IdEvent
         LEFT JOIN TRDetails1 TD4
            ON TRI.TableID = 4
           AND TRI.IdEvent = TD4.IdEvent
         LEFT JOIN TRDetails1 TD5
            ON TRI.TableID = 5
           AND TRI.IdEvent = TD5.IdEvent
   where
          TRI.IdUser = 'the user ID you want'
      AND TRI.IsRecordOpen

查询使用union将相同的子查询重复到每一行

1 个答案: