SQL Server 2014 :: How To Update The Year Employee Has Been In Specific Title

--===== If the test table already exists, drop it

IF OBJECT_ID('TempDB..#mytable','U') IS NOT NULL
DROP TABLE #mytable

--===== Create the test table with

CREATE TABLE #mytable
(
EMP_ID INT,
Title varchar(50),
DateValue DATETIME,
TITLE_YEAR INT,

[code]....

I am new to this level of coding in SQL SERVER 2012, but I am looking to update the TITLE_YEAR field in the temp table with the Year the employee is in that title. For example for employee 11127 the data should look like this:

EMP_IDTitle DateValue TITLE_YEAR
3 Senior Consultant 2009-01-01 00:00:00.0001
3 Director 2010-01-01 00:00:00.0001
3 Director 2011-01-01 00:00:00.0002
3 Director 2012-01-01 00:00:00.0003
3 Director 2013-01-01 00:00:00.0004
3 Senior Director 2014-01-01 00:00:00.0001