T-SQL – Insert Data into Parent and Child Tables

Here is my solution (based on the same answer I’ve linked to in the comments):

First, you must add another column to your UDT, to hold a temporary ID for the employee:

CREATE TYPE dbo.tEmployeeData AS TABLE 
(
     FirstName NVARCHAR(50),
     LastName NVARCHAR(50),
     DepartmentType NVARCHAR(10),
     DepartmentBuilding NVARCHAR(50),
     DepartmentEmployeeLevel NVARCHAR(10),
     DepartmentTypeAMetadata NVARCHAR(100),
     DepartmentTypeBMetadata NVARCHAR(100),
     EmployeeId int
)
GO

Populating it with that new employeeId column:

DECLARE @tEmployeeData tEmployeeData

INSERT INTO @tEmployeeData (FirstName, LastName, DepartmentType,
                            DepartmentBuilding, DepartmentEmployeeLevel,
                            DepartmentTypeAMetadata, DepartmentTypeBMetadata, EmployeeId)
SELECT  
    N'Tom_FN', N'Tom_LN', N'A',
    N'101', N'IV', N'Tech/IT', NULL, 5
UNION
SELECT  
    N'Mike_FN', N'Mike_LN', N'B',
    N'OpenH', N'XII', NULL, N'Med', 6
UNION
SELECT  
    N'Joe_FN', N'Joe_LN', N'A',
    N'101', N'IV', N'Tech/IT', NULL, 7
UNION
SELECT  
    N'Dave_FN', N'Dave_LN', N'B',
    N'OpenC', N'XII', NULL, N'Lab', 8

Insert part goes here

Then, you use a table variable to map the inserted value from the employee table to the temp employee id in the data you sent to the procedure:

DECLARE @EmployeeidMap TABLE
(
    temp_id int,
    id int
)

Now, the trick is to populate the employee table with the MERGE statement instead of an INSERT...SELECT because you have to use values from both inserted and source data in the output clause:

MERGE INTO @MainEmployee USING @tEmployeeData AS sourceData ON 1 = 0 -- Always not matched
WHEN NOT MATCHED THEN
INSERT (FirstName, LastName)
VALUES (sourceData.FirstName, sourceData.LastName)
OUTPUT sourceData.EmployeeId, inserted.EmployeeID 
INTO @EmployeeidMap (temp_id, id); -- populate the map table

From that point on it’s simple, you need to join the data you sent to the @EmployeeidMap to get the actual employeeId:

INSERT INTO @ParentEmployeeDepartment (EmployeeID, DepartmentType)
SELECT Id, DepartmentType
FROM @tEmployeeData 
INNER JOIN @EmployeeidMap ON EmployeeID = temp_id

Now you can use the data in @ParentEmployeeDepartment to map the actual values in ParentEmployeeDepartmentID to the data you sent:

Testing the inserts so far

SELECT FirstName,
     LastName,
     SentData.DepartmentType As [Dept. Type],
     DepartmentBuilding As Building,
     DepartmentEmployeeLevel As [Emp. Level],
     DepartmentTypeAMetadata As [A Meta],
     DepartmentTypeBMetadata As [B Meta],
     SentData.EmployeeId As TempId, EmpMap.id As [Emp. Id], DeptMap.ParentEmployeeDepartmentID As [Dept. Id]
FROM @tEmployeeData SentData
INNER JOIN @EmployeeidMap EmpMap ON SentData.EmployeeId = temp_id 
INNER JOIN @ParentEmployeeDepartment DeptMap ON EmpMap.id = DeptMap.EmployeeID

results:

FirstName   LastName    Dept. Type  Building    Emp. Level  A Meta      B Meta  TempId      Emp. Id     Dept. Id
---------   --------    ----------  --------    ----------  ------      ------  ------      ----------- -----------
Dave_FN     Dave_LN     B           OpenC       XII         NULL        Lab     8           1           1
Joe_FN      Joe_LN      A           101         IV          Tech/IT     NULL    7           2           2
Mike_FN     Mike_LN     B           OpenH       XII         NULL        Med     6           3           3
Tom_FN      Tom_LN      A           101         IV          Tech/IT     NULL    5           4           4

I’m sure that from this point you can easily figure out the last 2 inserts yourself.