I am in the process of creating an organizational charts for my company, and to create the chart, the data must have a unique role identifier, and a unique 'reports to role' identifier for each line. Unfortunately my data is not playing ball and it out of my scope to change the source.
I have two source tables, simplified in the image below. It is important to note a couple of things in the data.
/**Join Role table with employee data table.
/**Right join so roles with more than one employee will generate a row each
SELECT [Role].RoleId As PositionId
,[EmpData].ReportsToRole As ReportsToPosition
RIGHT JOIN [EmpData] ON [Role].RoleId=[EmpData].[Role]
/** Output all roles that do not have a holder, 'VACANT' in employee name.
WHERE [Role].RoleID NOT IN (SELECT RoleID from [empdata])
If you are using T-SQL, you should look into using the
ROW_NUMBER operator with the
PARTITON BY command and combining the column with your existing column.
Specifically, you would add a column to your select of
ROW_NUMBER () OVER (PARTITION BY PositionID ORDER BY ReportsToPosition,EmployeeName) AS SeqNum
I would add that to your first query, and then, in your second, I would do something like
SELECT PositionID + CASE SeqNum WHEN 1 THEN "" ELSE "-"+CAST(SeqNum AS VarChar(100)),...
There are multiple ways to do this, but this will leave out the individual ones that don't need a "-1" and only add it to the rest. The major difference between this and your scheme is it doesn't contain the "0" pad on the left, which is easy to do, nor would the first "OPER" be "OPER-1", they would simply be "OPER", but this can also be worked around.
Hopefully this gets you what you need!