快速插入/更新SQL Server 2008 R2

Question

我正在尝试使用存储过程将记录插入到一个表中。

CREATE TABLE [dbo].[SHARE_AD_GROUP](
    [SHARE_AD_GROUP_ID] [int] IDENTITY(1,1) NOT NULL,
    [SHARE_ID] [int] NOT NULL,
    [AD_GROUP] [varchar](200) NOT NULL,
    [SHARE_PERMISSIONS] [varchar](65) NULL,

以下哪种方式最好:

1-

ALTER PROCEDURE [dbo].[PROC_INSERT_SHARE_AD_GROUP]


@shareID int,
@ownerId varchar(200),
@sharePermissions varchar(65)

AS

BEGIN
    -- SET NOCOUNT ON added to prevent extra result sets from
    -- interfering with SELECT statements.
    SET NOCOUNT ON;

    UPDATE [dbo].SHARE_AD_GROUP
               SET 
                   [SHARE_PERMISSIONS] = @sharePermissions
             WHERE SHARE_ID = @shareID and [AD_GROUP] = @ownerId
    if @@ROWCOUNT =0 
    begin
    INSERT INTO [dbo].SHARE_AD_GROUP
                       (SHARE_ID,[AD_GROUP],[SHARE_PERMISSIONS])
                 VALUES
                       (@shareID,@ownerId,@sharePermissions)
    end

end

   BEGIN
    -- SET NOCOUNT ON added to prevent extra result sets from
    -- interfering with SELECT statements.

    declare @id int
    SET NOCOUNT ON;
    set @id = (select top 1 SHARE_AD_GROUP_ID from SHARE_AD_GROUP where SHARE_ID = @shareID and [AD_GROUP] = @ownerId)
        if @id is null
            begin
                INSERT INTO [dbo].SHARE_AD_GROUP
                       (SHARE_ID,[AD_GROUP],[SHARE_PERMISSIONS])
                 VALUES
                       (@shareID,@ownerId,@sharePermissions)
                 set @id = SCOPE_IDENTITY()
            end
        else
            begin
            UPDATE [dbo].SHARE_AD_GROUP
               SET 
                   [SHARE_PERMISSIONS] = @sharePermissions
             WHERE SHARE_ID = @shareID and [AD_GROUP] = @ownerId
            end
End

3- 合并 ==> 不知道如何编写。

在您的意见中，最快的方法是什么？

- Maro

---

可能是 SQL Server 中 INSERT OR UPDATE 的解决方案 的重复内容。 - Andriy M

Answer 1

我认为合并语句比你展示的两种方式更快。如果您需要了解如何在SQL Server中编写MERGE INTO查询，请跟随以下链接。

http://blog.sqlauthority.com/2008/08/28/sql-server-2008-introduction-to-merge-statement-one-statement-for-insert-update-delete/

https://www.simple-talk.com/sql/learn-sql-server/the-merge-statement-in-sql-server-2008/

您的合并块应该是这样的，您需要将其放入存储过程或任何其他位置。

MERGE INTO SHARE_AD_GROUP A
USING (
    SELECT SHARE_AD_GROUP_ID,
        SHARE_ID,
        AD_GROUP,
        SHARE_PERMISSIONS
    FROM SHARE_AD_GROUP
    WHERE SHARE_ID = @shareID AND AD_GROUP = @ownerId
) B ON (A.SHARE_AD_GROUP_ID = B.SHARE_AD_GROUP_ID)
WHEN MATCHED THEN
    UPDATE SET A.SHARE_PERMISSIONS = B.SHARE_PERMISSIONS
WHEN NOT MATCHED THEN
    INSERT (SHARE_PERMISSIONS) VALUES(@sharePermissions);

- Tejas Vaishnav

---

所有的例子都使用了2个表，即目标表和源表，但在我的情况下，我正在传递存储过程参数。我进行了搜索，但没有找到类似的情况。 - Maro

我已经更新了我的答案，你可以看一下并根据你的需求做出适当的更改。 - Tejas Vaishnav

Answer 2

我相信你已经明白了这一点，但是其他人可能会发现它有用。

ALTER PROCEDURE [dbo].[PROC_INSERT_SHARE_AD_GROUP]
    @shareID int,
    @ownerId varchar(200),
    @sharePermissions varchar(65)
AS
BEGIN
    -- SET NOCOUNT ON added to prevent extra result sets from
    -- interfering with SELECT statements.
    SET NOCOUNT ON;

    MERGE [dbo].SHARE_AD_GROUP AS T
    USING
    (
        SELECT @shareID,@ownerId,@sharePermissions
    ) AS S
    (
        SELECT Share_ID,AD_Group,Share_Permissions
    )
    ON (T.SHARE_ID = S.Share_ID and T.AD_GROUP = S.AD_Group)

    WHEN MATCHED THEN
        UPDATE SET SHARE_PERMISSIONS = S.Share_Permissions

    WHEN NOT MATCHED THEN
        INSERT
            (SHARE_ID,AD_GROUP,SHARE_PERMISSIONS)
        VALUES
            (S.Share_ID,S.AD_Group,S.Share_Permissions)
    ;
END

- JayValkyr