Merge tables having different columns (SQL Server) - sql-server

Question

I have 2 tables with details as follows
Table 1
Name | City | Employee_Id
-----------------
Raj | CA | A2345
Diya | IL | A1234
Max | PL | A2321
Anna | TX | A1222
Luke | DC | A5643
Table 2
Name | City | Employee_Id | Phone | Age
---------------------------------------
Raj | CA | A2345 | 4094 | 25
Diya | IL | A1234 | 4055 | 19
Max | PL | A2321 | 4076 | 23
As you can see, Employee_Id is the common column in both the columns. I want to update all the entries present in table 1 into table 2.
Raj, Divya and Max are already present in Table 2. So it should not create a duplicate entry in table 2 and skip those 3 entries whereas Anna and Luke are not present in table 2. so this should be added as a new row.
The SQL should be able to merge these 2 columns and ignore the rows which are already present. The final table 2 must be similar to this.
Table 2
Name | City | Employee_Id | Phone | Age
---------------------------------------
Raj | CA | A2345 | 4094 | 25
Diya | IL | A1234 | 4055 | 19
Max | PL | A2321 | 4076 | 23
Anna | TX | A1222 | |
Luke | DC | A5643 | |
Is there a way I could achieve this? I am pretty new to SQL, so any inputs would be of great help. I read about merge and update feature but I guess merge is in Transact-SQL. Also read about joins but could not find a way to crack this.

Answer 1

Demo Setup
CREATE TABLE Table1
([Name] varchar(4), [City] varchar(2), [Employee_Id] varchar(5));
INSERT INTO Table1
([Name], [City], [Employee_Id])
VALUES
('Raj', 'FL', 'A2345'),
('Diya', 'IL', 'A1234'),
('Max', 'PL', 'A2321'),
('Anna', 'TX', 'A1222'),
('Luke', 'DC', 'A5643');
CREATE TABLE Table2
([Name] varchar(4), [City] varchar(2), [Employee_Id] varchar(5), [Phone] int, [Age] int);
INSERT INTO Table2
([Name], [City], [Employee_Id], [Phone], [Age])
VALUES
('Raj', 'CA', 'A2345', 4094, 25),
('Diya', 'IL', 'A1234', 4055, 19),
('Max', 'PL', 'A2321', 4076, 23);
MERGE QUERY
MERGE Table2 AS target
USING Table1 AS source
ON (target.[Employee_Id] = source.[Employee_Id])
WHEN MATCHED THEN
UPDATE SET [Name] = source.[Name],
[City] = source.[City]
WHEN NOT MATCHED THEN
INSERT ([Name], [City], [Employee_Id], [Phone], [Age])
VALUES (source.[Name], source.[City], source.[Employee_Id], NULL, NULL);
SELECT *
FROM Table2