Question

自从我使用SSRS和SQL已经好几年了，所以我提前为这个补救措辞和措辞不好的问题道歉。

我有一个表，事件，包括2列，开启者和所有者（都是整数）。这些列与User表相关，我想从中检索用户名。我可以加入表格，但是如何检索用户名作为开场白和所有者，以便我可以将其包含在我的报告中？

SELECT
    TST_INCIDENT.OPENER_ID AS Logged_By,
    TST_INCIDENT.OWNER_ID AS Assignee,
    TST_INCIDENT.INCIDENT_ID AS Defect_ID,
    TST_INCIDENT.NAME AS Defect_Title,
    TST_INCIDENT.DESCRIPTION AS Defect_Desc,
    TST_USER.USER_NAME
FROM
    TST_USER
INNER JOIN 
    TST_INCIDENT ON TST_USER.USER_ID = TST_INCIDENT.OPENER_ID 
                 AND TST_USER.USER_ID = TST_INCIDENT.OWNER_ID

Answer 1

您可以为每个ID加入一次用户表。如果ID可能丢失，请将它们更改为左连接。

SELECT
  TST_INCIDENT.OPENER_ID AS Logged_By
  ,TST_INCIDENT.OWNER_ID AS Assignee
  ,TST_INCIDENT.INCIDENT_ID AS Defect_ID
  ,TST_INCIDENT.NAME AS Defect_Title
  ,TST_INCIDENT.DESCRIPTION AS Defect_Desc
  ,A.USER_NAME as OPENER_USER_NAME
  ,B.USER_NAME as OWNER_USER_NAME
FROM TST_INCIDENT
INNER JOIN TST_USER A ON A.USER_ID = TST_INCIDENT.OPENER_ID 
INNER JOIN TST_USER B ON B.USER_ID = TST_INCIDENT.OWNER_ID

将多个表列连接到多个表

1 个答案: