[英]SQL Server 2008 - Insert ID from newly created record in one table, into two other tables
[英]Insert into two tables and affect the id of one of the table columns into the other table
我有一个包含以下项的文件夹表
id | name | state | imageFolder
-------------------------------------------
1 NameTest 1 2
我还有一个叫做“图片”的图片,其中包含
id | url
--------------------------------------------
2 https://www.someImageUrl
我想在查询的文件夹表中插入一个url并将其放在图像中,并在同一查询中获取id。 实际上,我正在一个android项目中,我必须添加一个新文件夹并将图像上传到它,因此这就是为什么我需要这个。 有办法吗?
您将要使用SCOPE_IDENTITY()
捕获由IMAGE
表生成的键值。 有些人使用@@IDENTITY
,不要这样做,它具有全局作用域, 有时您可能会获取错误的ID。
然后使用该值插入FOLDER
表。 首先插入IMAGE
表有点后退,但这是您获取所需ID
。 这是一个功能齐全的示例:
IF OBJECT_ID('IMAGE') IS NOT NULL
DROP TABLE [IMAGE]
CREATE TABLE [dbo].[IMAGE](
[id] [int] IDENTITY(1,1) NOT NULL,
[url] [varchar](50) NOT NULL,
CONSTRAINT [PK_IMAGE] PRIMARY KEY CLUSTERED
(
[id] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]
GO
IF OBJECT_ID('FOLDER') IS NOT NULL
DROP TABLE [FOLDER]
CREATE TABLE [dbo].[FOLDER](
[id] [int] IDENTITY(1,1) NOT NULL,
[name] [varchar](50) NOT NULL,
[state] [int] NOT NULL,
[image_id] [int] NOT NULL,
CONSTRAINT [PK_FOLDER] PRIMARY KEY CLUSTERED
(
[id] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]
GO
DECLARE @IMAGE_ID INT
INSERT INTO IMAGE(url)
VALUES ('http://www.example.com')
SET @IMAGE_ID = SCOPE_IDENTITY() --This is the key part
INSERT INTO FOLDER(NAME, STATE, IMAGE_ID)
VALUES ('NameTest', 1, @IMAGE_ID)
GO
SELECT * FROM IMAGE
SELECT * FROM FOLDER
结果:
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