存儲過程插入到相關表中

Question

我嘗試寫入SP以將值插入相關表中。我有錯誤消息：

"Cannot insert the value NULL into column 'marka_id', table 'env.dbo.Marka'; column does not allow nulls. INSERT fails.

Cannot insert the value NULL into column 'model_id', table 'env.dbo.Model'; column does not allow nulls. INSERT fails.

Cannot insert the value NULL into column 'f_id', table 'env.dbo.Firma'; column does not allow nulls. INSERT fails.

Cannot insert the value NULL into column 'sira_no', table 'env.dbo.Ana'; column does not allow nulls. INSERT fails.

The statement has been terminated.

The statement has been terminated.

The statement has been terminated.

The statement has been terminated."

這裏的存儲過程：

use env 
go 
create procedure [SP$Ekle](
@marka_adi nvarchar(30) = NULL, 
@model_adi nvarchar(30) = NULL, 
@f_adi nvarchar(50) = NULL, 
@adres nvarchar(20) = NULL, 
@tel nvarchar(20) = NULL, 
@seri_no nvarchar(30) = NULL, 
@kullanici_adi nvarchar(50) = NULL, 
@link nvarchar(50) = NULL, 
@aciklama nvarchar(50) = NULL, 
@sira_no int output 
) 
as 
begin 
set nocount on 

DECLARE 
@marka_id int, 
@model_id int, 
@f_id int 
begin 

INSERT INTO Marka(marka_adi) VALUES(@marka_adi); 
SET @marka_id = (SELECT marka_id FROM Marka WHERE marka_adi = @marka_adi); 

INSERT INTO Model(marka_id,model_adi) VALUES(@marka_id,@model_adi); 
SET @model_id = (SELECT @model_id FROM Model WHERE model_adi = @model_adi); 

INSERT INTO Firma(f_adi,adres,tel) VALUES (@f_adi,@adres,@tel); 
SET @f_id = (SELECT f_id FROM Firma WHERE f_adi= @f_adi AND adres = @adres AND tel = @tel); 

INSERT INTO Ana(seri_no,kullanici_adi,link,aciklama,marka_id,model_id,f_id) VALUES (@seri_no,@kullanici_adi,@link,@aciklama,@marka_id,@model_id,@f_id); 

SELECT @sira_no = SCOPE_IDENTITY(); 
end 

set nocount off 
end 
go 

從C＃調用：

cmd.CommandText = "SP$Ekle"; 
     cmd.CommandType = CommandType.StoredProcedure; 
     cmd.Parameters.Add(new SqlParameter("@marka_adi", TextBox1.Text)); 
     cmd.Parameters.Add(new SqlParameter("@model_adi", TextBox2.Text)); 
     cmd.Parameters.Add(new SqlParameter("@f_adi", TextBox3.Text)); 
     cmd.Parameters.Add(new SqlParameter("@adres", TextBox4.Text)); 
     cmd.Parameters.Add(new SqlParameter("@tel", TextBox5.Text)); 
     cmd.Parameters.Add(new SqlParameter("@seri_no", TextBox6.Text)); 
     cmd.Parameters.Add(new SqlParameter("@kullanici_adi", TextBox7.Text)); 
     cmd.Parameters.Add(new SqlParameter("@link", TextBox8.Text)); 
     cmd.Parameters.Add(new SqlParameter("@aciklama", TextBox9.Text)); 
     cmd.Parameters.Add(new SqlParameter("@sira_no", SqlDbType.Int)).Direction = ParameterDirection.Output; 

Answer 1

錯誤是告訴你，當你調用insert你不及格在一個不可空列的值中。特別是您的ID列，如果它們被設置爲您的主鍵，那麼這些列不能爲空。

很難說沒有看到你的表，但我認爲你需要將你的列設置爲標識，這樣你的行ID就自動創建了。否則，如果您在插入時未指定ID，您將收到您收到的錯誤。

在這個堆棧溢出問題請看： Setting Identity to on or off in SQL server

這裏是開啓播種好的計算器問題。其SQL 2005，但其同樣的過程：

Adding auto incrementing primary key to an existing table in SQL SERVER 2005

編輯回答你的問題：

您要查詢分配給你想要做這樣的事情的變量：

SELECT TOP 1 @marka_id = marka_id FROM Marka WHERE marka_adi = @marka_adi 

你必須對所有的可疑陳述都這樣做。

Answer 2

對於使用身份，你可以參考這個：http://www.sqlteachers.com/entries/2021-Using-Identity-in-SQL-Server