SQL Server存储过程如果存在更新，则插入

Question

I created a stored procedure locally (IF Exist Update Else Insert)

When I execute the procedure it can't insert or update any data, SQL Server shows that query has run successfully.

Table:

CREATE TABLE Laptops 
(
    Brand varchar(50),
    Series varchar(50),
    Model varchar(50),
    Gener int,
    Ram int,
    HDD int,
    Processor varchar(50),
    Clock float,
    Graphic_Chip varchar(50),
    Graphic_Memory int,
    Qty int,
    Price int
    PRIMARY KEY (Brand,Series,Model,Gener,Ram,HDD,Processor,Clock,Graphic_Chip,Graphic_Memory)
)

Stored procedure:

CREATE PROCEDURE Insert_Inventory
(
    @Brand Varchar(50),
    @Series Varchar(50),
    @Model Varchar(50),
    @Gener int,
    @Ram int,
    @HDD int,
    @Processor Varchar(50),
    @Clock float,
    @Graphic_Chip Varchar(50),
    @Graphic_Memory int,
    @Qty int,
    @Price int
)
AS
    IF EXISTS (SELECT * FROM Laptops
               WHERE Brand = @Brand
                 and Series = @Series
                 and Model = @Model
                 and Gener = @Gener 
                 and ram = @Ram 
                 and hdd = @HDD 
                 and Processor = @Processor 
                 and Clock = @Clock 
                 and Graphic_Chip = @Graphic_Chip 
                 and Graphic_Memory = @Graphic_Memory)
    BEGIN
        UPDATE Laptops 
        SET 
            Qty = Qty + @Qty, 
            Price = @Price
        WHERE 
            Brand = @Brand 
            and Series = @Series
            and Model = @Model 
            and Gener = @Gener 
            and ram = @Ram 
            and hdd = @HDD 
            and Processor = @Processor 
            and Clock = @Clock 
            and Graphic_Chip = @Graphic_Chip 
            and Graphic_Memory = @Graphic_Memory
    END
    ELSE
    BEGIN
       INSERT into Laptops 
       VALUES (@Brand, @Series, @Model, @Gener, @Ram, @HDD, @Processor, @Clock, @Graphic_Chip, @Graphic_Memory, @Qty, @Price)
    END

Execute

exec Insert_Inventory 'Dell', 'Inspiron', '14', 3, 4, 500, 'Core_i_5', 2.7, 'NVIDIA', 512, 20, 42000

Answer 1

You have to wrap your SP into BEGIN & END , you are missing that. And also use 1 when check IF Exist in Select Statement .And also check that, Some transaction is open but not commit. Instead of Doing this also, You can use SQL MERGE to Update and Insert Statement.

CREATE PROCEDURE Insert_Inventory
(
    @Brand Varchar(50),
    @Series Varchar(50),
    @Model Varchar(50),
    @Gener int,
    @Ram int,
    @HDD int,
    @Processor Varchar(50),
    @Clock float,
    @Graphic_Chip Varchar(50),
    @Graphic_Memory int,
    @Qty int,
    @Price int
)
AS
BEGIN
    IF EXISTS (SELECT 1 FROM Laptops
        WHERE Brand=@Brand
            and Series=@Series
            and Model=@Model
            and Gener=@Gener 
            and ram=@Ram 
            and hdd=@HDD 
            and Processor=@Processor 
            and Clock=@Clock 
            and Graphic_Chip=@Graphic_Chip 
            and Graphic_Memory=@Graphic_Memory
    )
    BEGIN
        UPDATE Laptops set qty=qty+@Qty, Price=@Price
        WHERE Brand=@Brand 
            and Series=@Series
            and Model=@Model 
            and Gener=@Gener 
            and ram=@Ram 
            and hdd=@HDD 
            and Processor=@Processor 
            and Clock=@Clock 
            and Graphic_Chip=@Graphic_Chip 
            and Graphic_Memory=@Graphic_Memory
    END
ELSE
    BEGIN
        INSERT into Laptops Values (@Brand,@Series,@Model,@Gener,@Ram,@HDD,@Processor,@Clock,@Graphic_Chip,@Graphic_Memory,@Qty,@Price)
    END

END