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[英]Using a User defined table type with a temporary stored procedure in SQL Server
[英]Insert records into SQL Server database from user defined table type using stored procedure
情境
我有這個數據表,當用戶將角色分配給其他用戶時,我將從中獲得該數據表:
在上表中,我為用戶mushtaq分配了新角色,並通過以下過程將其插入數據庫中。
ALTER PROCEDURE [dbo].[SP_ROLE_ASSIGNMENT_ASSIGN_ROLES_TO_USER]
@RoleAssignmentDT _ROLEASSIGNMENTSCHEMA ReadOnly
AS
BEGIN TRY
BEGIN TRANSACTION
IF EXISTS (SELECT Role_ID
FROM Role_Assignment RA
INNER JOIN @RoleAssignmentDT t ON t._Role_ID = Ra.Role_ID
AND RA.Username = t._Username)
BEGIN
UPDATE Role_Assignment
SET Role_Assign = 0,
Modified_By_ID = t._Modified_By_ID,
Modified_Date = GETDATE()
FROM @RoleAssignmentDT t
WHERE Role_Assignment.Role_ID <> t._Role_ID
AND Role_Assignment.Username = t._Username
AND (t._Role_Assign = 1 AND Role_Assignment.Role_Assign = 1)
UPDATE Role_Assignment
SET Role_Assign = t._Role_Assign,
Modified_By_ID = t._Modified_By_ID,
Modified_Date = GETDATE()
FROM @RoleAssignmentDT t
WHERE Role_Assignment.Role_ID = t._Role_ID
AND Role_Assignment.Username = t._Username
END
ELSE
BEGIN
INSERT INTO Role_Assignment (Role_ID, Username, Role_Assign, Prepared_By_ID, Prepared_Date)
SELECT
t._Role_ID, t._Username, t._Role_Assign, t._Prepared_By_ID, GETDATE()
FROM
@RoleAssignmentDT t
END
COMMIT TRAN -- Transaction Success!
END TRY
BEGIN CATCH
IF @@TRANCOUNT > 0
ROLLBACK TRAN --RollBack in case of Error
-- you can Raise ERROR with RAISEERROR() Statement including the details of the exception
--RAISERROR('No Record Inserted, Contact to administrator',16,1)
DECLARE @Msg NVARCHAR(MAX)
SELECT @Msg=ERROR_MESSAGE()
RAISERROR('Error Occured: %s', 20, 101,@msg) WITH LOG
END CATCH
以下是我的SQL Role_Assignment
表的架構
現在,當我向上述其他用戶分配新角色時,過程只會更新ahmer
用戶。 因為當我的過程獲取數據表時,我的IF
條件就會運行並找到用戶ahmer
並對其進行更新。
我想要的是
我希望存儲過程僅檢查和更新SQL Server表Role_Assignment
存在的那些用戶; 如果它們不存在,請先插入它們。
我想提供有關當前問題的簡短信息。 請幫助我在存儲過程中進行哪些修改,以便它首先檢查天氣用戶是否存在。 之前不存在的對象然后將其插入並更新其他存在的對象。
在存儲過程中嘗試以下方法代替您的t-sql代碼
MERGE Role_Assignment ra
USING @RoleAssignmentDT t
ON Role_Assignment.Username = t._Username
WHEN MATCHED AND
Role_Assignment.Role_ID <> t._Role_ID
and (t._Role_Assign = 1 and Ra.Role_Assign = 1) THEN
UPDATE
Set Role_Assign = 0, Modified_By_ID = t._Modified_By_ID, Modified_Date = GETDATE()
From @RoleAssignmentDT
WHEN MATCHED AND
Role_Assignment.Role_ID = t._Role_ID THEN
UPDATE
Set Role_Assign = t._Role_Assign, Modified_By_ID = t._Modified_By_ID, Modified_Date = GETDATE()
From @RoleAssignmentDT
WHEN NOT MATCHED BY TARGET THEN
Insert (Role_ID,Username,Role_Assign,Prepared_By_ID,Prepared_Date)
VALUES (t._Role_ID, t._Username, t._Role_Assign, t._Prepared_By_ID, GETDATE());
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