Re: [SQL] extracting PII data and transforming it across table.

[John R Pierce <pierce@xxxxxxxxxxxx>]

On 5/21/2015 9:51 AM, Suresh Raja wrote:

I'm looking at directions or help in extracting data from production and alter employee id information while extracting.  But at the same time maintain referential integrity across tables. Is it possible to dump data to flat file and then run some script to change emp id data on all files.  I'm looking for a easy solution.

Thanks,

-Suresh Raja

Steve:

I too would like to update the id's before dumping.  can i write a sql to union all tables and at the same time create unique key valid across tables.

it sounds like you have a weak grasp of delational database design

I would have a single Employee table, with employee ID as the primary key, and any other attributes which are common to all employees, then I would have other tables which contain information about specific employee types or groups, these other tables could have their own primary key, but would reference the Employee table EmployeeID field for the common employee attributes.

-- 
john r pierce, recycling bits in santa cruz