Check if Exist or Not then Insert Update - mysql

Question

I need to check if the data exist if the data didn't exist then I'll be able to insert and update but if the data exist the messagebox will show that the data already exist but when I tried to add same data that already exist it still add and no messagebox shown that it already exist.
here's my code
If jobtitle <> "" And businessunit <> "Please Select" And division <> "Please Select" And subdivision <> "Please Select" And classification <> "Please Select" And subclassification <> "Please Select" Then
insrtResult = UpdateInsDelRecord("UPDATE EMP_MASTERTBL SET JOBTITLE = '" & jobtitle & "' " & _
"WHERE MASTERID = '" & empID & "'" & _
";" & _
"INSERT INTO EMPGROUP_TBL(MASTERID, BUSINESS_UNIT, " & _
"DIVISION, SUB_DIVISION, CLASSIFICATION, SUB_CLASSIFICATION) VALUES " & _
"('" & HandleQuote(empID) & "', " & _
"'" & businessunit & "' ," & _
"'" & division & "' ," & _
"'" & subdivision & "' ," & _
"'" & classification & "' ," & _
"'" & subclassification & "')")
If Not insrtResult Then
MessageBox("alert('Error Ocurred While Inserting a Data.')")
Else
MessageBox("alert('Successfully Added.')")
End If
Else
MessageBox("alert('Data Already Exist.')")
End If
what could be the problem to my code? Thanks in advance.

Answer 1

For SQL Server check the MERGE query, i used this to perform an "upsert" on my own db, it also seems to be performing fast enough.
You can chose a condition and perform different operations whether it returns true or false (e.g. if ID already exists then update, else insert)
For MySql i think there are solutions much more easier to write, wich unfortunatly i can't remember at the moment
https://msdn.microsoft.com/en-us/library/bb510625.aspx