I have a Folder table which contain the following columns:
id | name | state | imageFolder ------------------------------------------- 1 NameTest 1 2
And I have another one called Images which contains:
id | url
--------------------------------------------
2 https://www.someImageUrl
I want to insert an url in the folder table in a query and put it in the images and get the id in the same query.
Actually, I am working on an Android project, I have to add a new folder and upload an image to it so that’s why I need this.
Is there a way to do it?
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Answer
You’ll want to use SCOPE_IDENTITY() to capture the key value being generated by the IMAGE table. Some people use @@IDENTITY, do not do that, it has a global scope and you can sometimes get back the wrong ID.
Then use that value to insert into the FOLDER table. It feels a little backwards to insert into the IMAGE table first but that’s how you get the ID you want. Here is a fully functional example:
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
Results:
