How to do mirroring or replication in table level in SQL Server with SQL Query

Question

Inserting one row from one table to another table of second database

 Insert into Task1.dbo.Patients (FirstName, Lastname, Address, ContactNo,Gender,DateOfBirth )
  Select FirstName, Lastname, Address, ContactNo,Gender,DateOfBirth from Tasks.dbo.Patients

I want to insert one copy of only the inserted row in similar table present in another database. Insert Into is a choice but it copies the whole data from source table and append into destination table. I want to mirror only one row at the time of insertion in another database.

Answer 1

You can use a straightforward trigger for this

CREATE TRIGGER tr_Patients_Tasks1Copy ON dbo.Patients AFTER INSERT
AS

SET NOCOUNT ON;

IF EXISTS (SELECT 1 FROM inserted)
    INSERT Task1.dbo.Patients
      (FirstName, Lastname, Address, ContactNo, Gender, DateOfBirth)
    SELECT FirstName, Lastname, Address, ContactNo, Gender, DateOfBirth
    FROM inserted i;

GO

Note that the inserted table may have multiple or even zero rows