使用一个查询的（多个）结果作为另一个查询的输入

Question

我正在使用 Vb.net 和 SQL

编写票务程序

我有 2 个 table 需要在查询中使用。一张 table (Tickets) 包含我需要的所有值。第二个 table (Ticketactions) 包含链接到 Ticket

的所有 TicketActions

我想要的是创建一个搜索，搜索以下列：

Ticket.description
ticket.ticketID
Ticketaction.ActionDescrition

我有一个很好用的搜索并搜索门票 Table

        SELECT 
    tickets.TicketNumber, 
    tickets.Description,
    tickets.departmentname,
    tickets.devicename,
    tickets.creatorname,
    tickets.creationdate,
    tickets.ExecutionDate,
    tickets.closedate
    stateName,
    PriorityName,
    FullName,
         FROM tickets
    INNER Join Users On Tickets.AssignedTo = Users.UserID
    INNER Join States On Tickets.StateID = States.StateID 
    INNER Join Priorities On Tickets.priority = Priorities.PriorityID 
         WHERE Description Like '%SEARCHTEXT%' OR TicketNumber Like '%SEARCHTEXT%'

我想要的是使用作为 TicketActions table

中查询结果的额外 TicketNumbers 扩展上述查询

    SELECT TicketNumber
    FROM dbo.ticketaction
    WHERE ActionDescription like '%SEARCHTEXT%'

因此结果应该与第一个查询完全相同，但添加了第二个查询找到的票号。

非常欢迎任何帮助，因为我真的不知道如何处理这个问题

Answer 1

你应该可以用一个简单的联合来做到这一点？以下是示例代码，但可能不是您想要的。

Union Syntax

SELECT tickets.TicketNumber
    ,tickets.Description
    ,tickets.departmentname
    ,tickets.devicename
    ,tickets.creatorname
    ,tickets.creationdate
    ,tickets.ExecutionDate
    ,tickets.closedate stateName
    ,PriorityName
    ,FullName
FROM tickets
INNER JOIN Users ON Tickets.AssignedTo = Users.UserID
INNER JOIN States ON Tickets.StateID = States.StateID
INNER JOIN Priorities ON Tickets.priority = Priorities.PriorityID
WHERE Description LIKE '%SEARCHTEXT%'
    OR TicketNumber LIKE '%SEARCHTEXT%'

UNION

SELECT t.TicketNumber
    ,NULL
    ,NULL
    ,NULL
    ,NULL
    ,NULL
    ,NULL
    ,NULL
    ,NULL
    ,NULL
FROM dbo.ticketaction t
WHERE ActionDescription LIKE '%SEARCHTEXT%'

Answer 2

要回答你的字面问题，应该是这样的……

SELECT 
    tickets.TicketNumber, 
    tickets.Description,
    tickets.departmentname,
    tickets.devicename,
    tickets.creatorname,
    tickets.creationdate,
    tickets.ExecutionDate,
    tickets.closedate
    stateName,
    PriorityName,
    FullName,
FROM
           tickets
INNER Join Users      On Tickets.AssignedTo = Users.UserID
INNER Join States     On Tickets.StateID = States.StateID 
INNER Join Priorities On Tickets.priority = Priorities.PriorityID 
WHERE tickets.Description Like '%SEARCHTEXT%'
   OR tickets.TicketNumber Like '%SEARCHTEXT%'
   OR tickets.TicketNumber IN (SELECT TicketNumber
                                 FROM dbo.ticketaction
                                WHERE ActionDescription like '%SEARCHTEXT%'
                              )

一个更好的解决方案，可能是在 ticketAction table

上使用 JOIN

SELECT 
    tickets.TicketNumber, 
    tickets.Description,
    tickets.departmentname,
    tickets.devicename,
    tickets.creatorname,
    tickets.creationdate,
    tickets.ExecutionDate,
    tickets.closedate
    stateName,
    PriorityName,
    FullName,
FROM
           tickets
INNER JOIN Users        ON tickets.AssignedTo = Users.UserID
INNER JOIN States       ON tickets.StateID = States.StateID 
INNER JOIN Priorities   ON tickets.priority = Priorities.PriorityID 
INNER JOIN ticketAction ON ticket.TicketNumber = ticketAction.TicketNumber
WHERE tickets.Description Like '%SEARCHTEXT%'
   OR tickets.TicketNumber Like '%SEARCHTEXT%'
   OR ticketAction.ActionDescription LIKE '%SEARCHTEXT%'

（假定每张票都有一个 ticketAction。如果不是这种情况，请使用 LEFT JOIN）

或者，EXISTS()...

SELECT 
    tickets.TicketNumber, 
    tickets.Description,
    tickets.departmentname,
    tickets.devicename,
    tickets.creatorname,
    tickets.creationdate,
    tickets.ExecutionDate,
    tickets.closedate
    stateName,
    PriorityName,
    FullName,
FROM
           tickets
INNER Join Users      On Tickets.AssignedTo = Users.UserID
INNER Join States     On Tickets.StateID = States.StateID 
INNER Join Priorities On Tickets.priority = Priorities.PriorityID 
WHERE tickets.Description Like '%SEARCHTEXT%'
   OR tickets.TicketNumber Like '%SEARCHTEXT%'
   OR EXISTS (SELECT *
                FROM dbo.ticketaction
               WHERE ActionDescription like '%SEARCHTEXT%'
                 AND TicketNumber = tickets.TicketNumber
             )

使用一个查询的（多个）结果作为另一个查询的输入

Use (multiple) results from one query as input for another query

sql

sql-server

multiple-results