Insert multiple records using stored procedure - sql

Question

I have two tables
emplyoee (first table)
id primary key auto increment
emp_name varchar
student(second table)
id foriegnkey emplyoee.id
st_name varchar
I want to insert multiple student records for a single employeeid . My code is attached here , but this use to only one student record update. How can I write stored procedure for this need.
I am new with SQL server and stored procedure.
Could you please help me?
create procedure empst_Sp
#emp_name varchar(50),
#st_name varchar(50)
as
begin
insert into emplyoee (emp_name) values (#emp_name)
insert into student(id,st_name) values(SCOPE_IDENTITY(),#st_name)
end

Answer 1

For your case, you can try this code above ( I'm using XML parameter type)
CREATE PROCEDURE EmployeeIns
#EmployeeName NVARCHAR(50),
#Students XML
AS
/*
#Students : <Students>
<Student Name='Studen 1'/>
<Student Name='Studen 1'/>
</Students>
*/
BEGIN
DECLARE #StudenTable TABLE(Name NVARCHAR(50))
DECLARE #EmployeeId INT
INSERT INTO #StudenTable
SELECT Tbl.Col.value('#Name', 'NVARCHAR(50)')
FROM #Students.nodes('//Student') Tbl(Col)
INSERT INTO Emplyoee VALUES(#EmployeeName)
SET #EmployeeId = SCOPE_IDENTITY()
INSERT INTO Student
SELECT #EmployeeId, Name FROM #StudenTable
END
Update 1 :
Your table design should be look like this :
CREATE TABLE [dbo].[Emplyoee](
[Id] [int] IDENTITY(1,1) NOT NULL,
[Name] [nvarchar](150) NULL,
CONSTRAINT [PK_Emplyoee] PRIMARY KEY CLUSTERED
(
[Id] ASC
))
CREATE TABLE [dbo].[Student](
[EmployeeId] [int] NULL,
[Name] [nvarchar](150) NULL,
[Id] [int] IDENTITY(1,1) NOT NULL,
CONSTRAINT [PK_Student] PRIMARY KEY CLUSTERED
(
[Id] ASC
))
The execute code :
EXEC EmployeeIns #EmployeeName='trungtin1710', #Students = '<Students><Student Name="Studen 1"/><Student Name="Studen 1"/></Students>'

Answer 2

All you need is a local variable in which you can set the value retrieved from Scope_Identity:-
CREATE PROCEDURE empst_Sp
#emp_name varchar(50),
#st_name varchar(50)
AS
BEGIN
DECLARE #id INT
INSERT INTO emplyoee (emp_name) VALUES (#emp_name)
set #id = SCOPE_IDENTITY()
INSERT INTO student(id,st_name) VALUES (#id,#st_name)
END

Answer 3

As I understand:
If emplyoee with #emp_name is already exists then insert student records with ID of the emplyoee, if there is not any emplyoee with #emp_name then need to insert new emplyoee and student with ID of the new emplyoee. Yes?
CREATE PROCEDURE empst_Sp
#emp_name varchar(50),
#st_name varchar(50)
AS
BEGIN
DECLARE #EmplyoeeId int
SET #EmplyoeeId = NULL
select #EmplyoeeId = id
from emplyoee
where emp_name = #emp_name
IF #EmplyoeeId IS NULL
BEGIN
insert into emplyoee (emp_name) values (#emp_name)
SET #EmplyoeeId = SCOPE_IDENTITY()
END
insert into student(id, st_name) values(#EmplyoeeId, #st_name)
END