SSIS : Using multicast to enter data into 2 RELATED destinations

Question

I am new to SSIS. I have data coming from a single source. I need to enter that data into several tables (these tables are related by foreign key relationships). I am usi

Answer 1

Staging table

CREATE TABLE [dbo].[Stage](
    [Name] [varchar](50) NULL,
    [Street] [varchar](50) NULL,
    [State] [varchar](50) NULL,
    [pkAddressID] [int] NULL
) ON [PRIMARY]

GO

Address table

CREATE TABLE [dbo].[Address](
    [pkAddressID] [int] IDENTITY(1,1) NOT NULL,
    [street] [varchar](50) NULL,
    [state] [varchar](50) NULL
) ON [PRIMARY]

-- Employee table

CREATE TABLE [dbo].[Employee](
    [pkEmployeeID] [int] IDENTITY(1,1) NOT NULL,
    [fkAddressID] [int] NULL,
    [Name] [varchar](50) NULL
) ON [PRIMARY]

GO

--- DFT - Load data into Stage table

--- Execute SQL Task 1 --- Populate Address table

Merge [dbo].[Address] as target
using
(
    select distinct [Street], [State] from [dbo].[Stage]
) as source
on  source.[Street] = target.[Street] and source.[State] = target.[State]

when not matched then
insert ([Street], [State])
values (source.[Street], source.[State])
;

--- Execute SQL Task 2 --- Populate Stage table//pkAddressID column

Merge [dbo].[Stage] as target
using
(
    select [pkAddressID],[Street], [State] from [1Address]
) 
as source 
on source.[Street] = target.[Street] and source.[State] = target.[State]

when matched then
update
set target.[pkAddressID] = source.[pkAddressID]
;

--- Execute SQL Task 3 --- Populate Employee table

Merge [dbo].[Employee] as target
using
(
    select [pkAddressID], [Name] from [dbo].[1Stage]
) as source
on source.[pkAddressID] = target.[fkAddressID]
and source.[Name] = target.[Name]

when not matched then
insert ([fkAddressID], [Name])
values (source.[pkAddressID], source.[Name])
;